Chapter 2 HAZARDS IN THE CHEMICAL PROCESS INDUSTRIES INTRODUCTION The multitude of products and diversity of processes in the petrochemical industries is vast, with numerous situations that may lead to high risk situations both for workers and communities neighboring operations. Perhaps one of the worst chemical disasters of the century was Bhopal, India. The city of Bhopal (1991 pop. 1,063,662), central India, capital of Madhya Pradesh state, was founded in 1728. Bhopal is a railway junction and industrial center, producing electrical equipment, textiles, and jewelry. Landmarks include the old fort (built 1728) and the Taj-ul-Masajid mosque, the largest in India. On Dec. 3, 1984, the worst industrial accident in history occurred there when a toxic gas leak from a Union Carbide insecticide plant killed over 6,400 people and seriously injured 30,000 to 40,000. The Indian government sued on behalf of over 500,000 victims and in 1989 settled for $470 million in damages and exempted company employees from criminal prosecution. The Indian judiciary rejected that exemption in 1991, and the company's Indian assets were seized (1992) after its officials failed to appear to face charges. The chemical processing industry is so diverse, with products ranging from large volume commodity chemicals to specialty chemicals and products. As such, only an overview of some of the major industry subcategories can be given, with highlights given to air emissions problems. Practices among this industry vary widely throughout the world, however in the United States, OSH standards have demanded strict safety precautions and procedures to protect workers against inhalation hazards. The chapter provides an overview of the sources of air pollutants, and as such, is 33 Copyright © 2001 Marcel Dekker, Inc. 34 CHAPTER 2 the basis for a list of areas to check within a plant operation to assess potential worker overexposure. The Occupational Safety and Health Act of 1970 emphasizes the need for standards to protect the health and safety of workers. To fulfill this need, the National Institute for Occupational Safety and Health (NIOSH) has developed a strategy for disseminating information that assists employers to protect their workers from workplace hazards. This strategy includes the development of Special NIOSH Hazard Reviews, which support and complement the major standards development and hazard documentation activities of the Institute. These documents deal with hazards that merit research and concern from the scientific community, even though they are not currently suitable for comprehensive review in a criteria document or a Current Intelligence Bulletin. Special NIOSH Hazard Reviews are distributed to the occupational health community at large—industries, trade associations, unions, and members of the academic and scientific communities. Some of the information provided in this chapter is derived from NIOSH Hazard Reviews, and the emphasis is on inhalation hazards. GENERAL TERMINOLOGY The following are important terms used throughout this chapter and the volume. The definitions provided are universally recognized, and in many cases the importance of the term in relation to a MSDS (Material Safety Data Sheet) is explained. Acid: There are several definitions for acid. The Arrhenius definition is a substance that ionizes in water to product H + ions. The Bronsted definition is a substance that is a proton (H + ) donor. This does not require the substances to be in aqueous (water) solution. The Lewis definition is a substance that can accept a pair of electrons. This does not require a proton or aqueous solution. There are several other definitions as well. An acidic solution is defined as one that has a pH less than 7.0. The following are examples of strong acids, meaning that they completely dissociate into ions and form H + in aqueous (water) solution. For example HC1 —» H + + Cl". All of these will cause severe burns upon skin contact: Perchloric acid (HC1O 4 ), Hydroiodic acid (HI), Hydrobromic acid (Hbr), Hydrochloric acid (HC1), Sulfuric acid (H 2 SO 4 ), and Nitric acid (HNO 3 ). Weak acids do not dissociate completely into ions. Examples of these include acetic acid (a 5% solution of acetic acid in water is called vinegar), formic acid, ammonium cation, and water itself. The strength of acids can be measured using Copyright © 2001 Marcel Dekker, Inc. HAZARDS IN THE CHEMICAL PROCESS INDUSTRIES 35 the pH scale. The lower the pH, the greater the acidity of a solution. Just because an acid is weak does not mean that it can't be harmful. For example, HF, hydrofluoric acid, is a weak acid. When you spill it on your hand it doesn't burn but over the course of hours it migrates to the bones in your fingers and then begins to dissolve them from the inside out (a painful process; amputation can be required). Some common properties of acids are: (1) They have a sour taste. For example, citric acid in lemons and vinegar are both sour; (2) They can react with metals such as magnesium, zinc or iron to corrode them and produce explosive hydrogen gas. Do not store acids in metal containers; (3) Solutions of acids can conduct electricity. It is important to know the pH of substances because they may be corrosive or react with incompatible materials. For example, acids and bases should not be stored or used near each other as their accidental combination could generate a huge amount of heat and energy, possibly resulting in an explosion. pH is also important to know in case you spill the material on your skin or eyes. Whenever a substance enters the eye, flush with water for 15 minutes and get prompt medical attention. ACGIH-American Conference of Governmental Industrial Hygienists, Inc.: The American Conference of Governmental Industrial Hygienists, Inc., ACGIH, is an organization open to all practitioners in industrial hygiene, occupational health, environmental health, or safety. Their web site is http://www.acgih.org/. ACGIH publishes over 400 titles in occupational and environmental health and safety. They are most famous for their Threshold Limit Values publication which lists the TLV's for over 700 chemical substances and physical agents, as well as 50 Biological Exposure Indices for selected chemicals. Acute toxicity: Acute toxicity describes the adverse effects resulting from a single exposure to a substance. Acute toxicity helps workers understand the health consequences from a single exposure to a chemical. Acute toxicity differs from chronic toxicity, which describes the adverse health effects from repeated (lower level) exposures to a substance over a longer period (months to years). Human tests for acute toxicity are not performed because of ethical and legal prohibitions. The U.S. EPA describes the following methods for determination of acute toxicity: Animal testing: Animal tests are still used where other laboratory protocols are not available. These tests are combined with other assays (lethality, necroscopy, etc.) to minimize the number of animals sacrificed. Evaluation of acute toxicity data should include the relationship, if any, between the exposure of animals to the test substance and the incidence and severity of all abnormalities, including behavioral and clinical abnormalities, the reversibility of observed abnormalities, gross lesions, body weight changes, effects on mortality, and any other toxic effects. Use of data from structurally related substances or mixtures: In order to minimize the need for animal testing for acute effects, the Copyright © 2001 Marcel Dekker, Inc. 36 CHAPTER 2 EPA encourages the review of existing acute toxicity information on chemical substances that are structurally related to the agent under investigation. In certain cases it may be possible to obtain enough information to make preliminary hazard evaluations that may reduce the need for further animal testing for acute effects. Chemical properties: For example, if a substance is a strong acid then there is really no need to do skin and eye tests as a corrosive material such as this will obviously cause great harm. In vitro testing (test tube experiments): Animal rights activists advocate such methods whenever possible. Limit testing: A single group of animals is given a large dose of the agent. If no lethality is demonstrated, no further testing is pursued and the substance is classified in a hazard category according to the dose used. Alopecia: Alopecia is the loss of hair. Acute or chronic exposure to some chemicals may result in the temporary or permanent loss of hair. Ames Test: The Ames Test is a way of determining whether a compound causes genetic mutations (changes). Animal liver cell extracts are combined with a special form of salmonella bacteria. The mixture is then exposed to the test substance and examined for signs that the bacteria have mutated (a process called mutagenesis). The Ames test does not directly indicate the carcinogenic (cancer- causing) potential of the substance, however there is a good correlation between mutagen strength and carcinogen strength in rodent studies. Avoid the use of mutagens, if at all possible. If you must work with them, be sure to utilize the proper personal protective equipment (PPE) recommended on the MSDS sheet. Anesthesia: Anesthesia is a loss of sensation or feeling. Anesthesia (or "anesthetics") is often used deliberately by doctors and dentists to block pain and other sensations during surgical procedures. Treatment for pre- or postoperative pain is called analgesia. Anhydride: An anhydride is a compound that gives an acid or a base when combined with water. Many substances are not themselves acids or bases, but will become such when exposed to water. This does not necessarily require the addition of water (such as from a fire hose). Many anhydrides will react readily with ambient humidity and even the water present in your skin or lungs. The reaction of anhydrides with water is often very violent and exothermic (giving off a great deal of heat energy). The reaction to form sulfuric acid is one step in the reaction of sulfur oxide emissions to form "acid rain". The reaction to form acetic acid is used in certain silicone caulks, leading to the familiar smell of vinegar (vinegar is a 5% solution of acetic acid in water), while the caulk cures. Anhydrous: An anhydrous material does not contain any water molecules. Many substances occur naturally as hydrates, compounds that have a specific number of water molecules attached to them. This water can often be removed by heating Copyright © 2001 Marcel Dekker, Inc. HAZARDS IN THE CHEMICAL PROCESS INDUSTRIES 37 and/or vacuum to give the anhydrous material. Anhydrous materials can absorb water from their surroundings and find use as dessicants. Examples include those packets of silica gel you find in some consumer goods, as well as dehumidifying sachets used in clothes closets. When an anhydrous material reacts with water, this could release a large amount of heat, possibly leading to a heat or pressure buildup that could result in an explosion. Anorexia: Anorexia is loss of appetite. You may be familiar with the eating disorder, anorexia nervosa, in which the victim restricts dietary intake to starvation levels. Anorexia may be a symptom of acute or chronic exposure to certain chemicals. If you have suffered an unexplained loss of appetite in conjunction with other unusual symptoms, you may want to explore the MSDS's for chemicals that you use in your workplace. Anosmia: Anosmia is the loss of the sense of smell. Anosmia can be fatal. Certain toxic chemicals have strong detectable odors at low levels. But at higher levels, these saturate your smell receptors ("olfactory fatigue") and you can no longer smell the material. For example, hydrogen sulfide, H 2 S, has the distinctive odor of rotten eggs at or below 10 parts per million (ppm) in air. If you were exposed to an H 2 S leak and the concentration went above 10 ppm, you might be lulled into thinking that the leak had stopped, because you could not smell it anymore. H 2 S can be fatal at concentrations of several hundred ppm. Anoxia: Anoxia is the absence of oxygen in inspired gases or in arterial blood and/or in the tissues. This is closely related to hypoxia, which is a severe oxygen deficiency in the tissues. One can think of anoxia as the most extreme case of hypoxia. ANSI-American National Standards Institute: American National Standards Institute, ANSI, is a private, nonprofit membership organization representing over 1,000 public and private organizations, businesses and government agencies. They seek to develop technical, political and policy consensus among various groups. Their web site is http://www.ansi.org/. ANSI does not develop American National Standards (ANSs), but they accredit qualified groups to do so in their area(s) of technical expertise. There are over 14,000 ANSI-approved standards in use today. ANSI-approved standards are voluntary, however, it is possible that some of the content of these standards could be made into law by a governmental body. ANSI is the official U.S. representative to the International Standards Organization (ISO). ANSI standard Z400.1-1998 "Hazardous Industrial Chemicals-Material Safety Data Sheets-Preparation" is the voluntary standard commonly used to construct MSDSs. You can purchase the standard on- line for $100.00 by following links on the ANSI web site. This standard was developed by the Chemical Manufacturers Association (CMA). The ANSI Copyright © 2001 Marcel Dekker, Inc. 38 CHAPTER 2 standard MSDS contains 16 sections: (1) Substance identity and company contact information, (2) chemical composition and data on components, (3) hazards identification, (4) First aid measures, (5) Fire-fighting measures, (6) Accidental release measures, (7) handling and storage, (8) exposure controls and personal protection, (9) physical and chemical properties, (10) stability and reactivity, (11) toxicological information, (12) ecological information, (13) disposal considerations, (14) transport information, (15) regulations, (16) other information. MSDSs in ANSI format have a few distinct advantages over those prepared using the standard OSHA Form 174 format. ANSI-format sheets have all of the information required on the OSHA 174 format sheets, as well as additional useful information. The information on an ANSI format sheet is arranged in a consistent format whereas OSHA has no format requirements, only content requirements. ANSI format is likely to be consistent from country to country, possibly permitting one to use the same MSDS in different markets without modification. Most businesses that issue new MSDSs today use the ANSI standard format. Aqueous: Aqueous refers to a solution in water. A more exact definition is a solution, in which the solute (the substance dissolved) initially is a liquid or a solid and the solvent is water. Aqueous solutions are not usually flammable, but may be able to carry toxic materials into your body through skin contact or ingestion. Be careful with terminology. A solution of ammonia gas (NH 3 ) in water is often called ammonium hydroxide, NH 4 OH, ammonia water, or simply ammonia. Do not confuse this aqueous solution sometimes called ammonia with ammonia gas (anhydrous ammonia). Aqueous solutions fall into three general categories, based on how well they conduct electricity. Strong electrolytes, when dissolved in water, dissociate completely into ions and conduct electricity. For example, sodium chloride, NaCl, dissociates into Na + and Cl" ions in water. Other examples of strong electrolytes are nitric acid (HNO 3 ) and sodium hydroxide (NaOH). Weak electrolytes, when dissolved in water, do not dissociate to any large extent and, therefore, do not conduct electricity very well. Examples include ammonia (NH 3 ) and acetic acid (CH 3 COOH). Nonelectrolytes do not dissociate to ions in water and do not conduct electricity. Examples include sugar (sucrose; C 12 H 22 O n ), ethanol (CH 3 CH 2 OH) and methanol (CH 3 OH). Asphysia: Asphysia is a lack of oxygen, which interferes with the oxygenation of the blood. This condition is the result of asphyxiation, which can result from a number of factors, such as (1) suffocation/strangulation or (2) inhalation of an asphyxiant, such as 100% nitrogen gas. Asphyxiant: An asphyxiant is a substance that can cause unconsciousness or Copyright © 2001 Marcel Dekker, Inc. HAZARDS IN THE CHEMICAL PROCESS INDUSTRIES 39 death by suffocation (asphyxiation). Asphyxiation is an extreme hazard when working in enclosed spaces. Be sure you are trained in confined space entry before working in sewers, storage tanks etc. where gases, such as methane, may displace oxygen from the atmosphere. Asphyxiants themselves are not toxic materials. They work by displacing so much oxygen from the ambient atmosphere, that the hemoglobin in the blood can not pick up enough oxygen from the lungs to fully oxygenate the tissues. As a result, the victim slowly suffocates. The normal composition of air is: Name Formula % by volume Nitrogen N 2 78.03 Oxygen O 2 20.99 Argon Ar 0.94 Carbon dioxide CO 2 0.033 Neon Ne 0.0015 According to the Canadian Center for Occupational Health and Safety (CCOHS) the health effects of asphyxiation are: % O 2 by volume Symptoms or effects 16 to 12 Breathing and pulse rate increased, muscular coordination slightly disturbed 14 to 10 Emotional upset, abnormal fatigue, disturbed respiration 10 to 6 Nausea and vomiting, collapse or loss of consciousness Below 6 Convulsive movements, possible respiratory collapse and death Examples of asphyxiating gases are nitrogen (NH 3 ), helium (He), neon (Ne), argon (Ar), methane (CH 4 ), propane (CH 3 CH 2 CH 3 ), and carbon dioxide (CO 2 ). All of the above except carbon dioxide are odorless and tasteless. You can be overcome by these gases without realizing they are present. Again, follow OSHA-approved protocols for confined space entry into sewers, storage tanks etc. Related terms are asphysia, asphyxiation. Asphyxiation: Asphyxiation is the process by which asphysia (lack of oxygen which interferes with the oxygenation of the blood) occurs. Asphyxiation can Copyright © 2001 Marcel Dekker, Inc. 40 CHAPTER 2 result from a number of factors such as (1) suffocation/strangulation or (2) inhalation of an asphyxiant such as 100% nitrogen gas. Asthma: Occupational asthma, one form of asthma, is a lung disease in which the airways overreact to dusts, vapors, gases, or fumes that exist in the workplace. Symptoms include wheezing, a tight feeling in the chest, coughing and shortness of breath. While occupationally-related asthma is usually reversible, chronic exposure to an irritant can result in permanent lung damage. The worker may become generally asthmatic, reacting to molds, allergens, cigarette smoke, dust mites, pet dander etc. Asymptomatic: Asymptomatic means neither causing nor exhibiting symptoms of disease. Just because one does not display symptoms of a disease or chemical exposure does not necessarily mean that one does not have the disease or was not harmed. Certain symptoms might occur only 50% of the time or not at all depending on the individual involved. In general, being asymptomatic is a good thing, but it is not a guarantee of health. Atrophy: Atrophy is a wasting or decrease in size of a bodily organ, tissue, or part owing to disease, injury, or lack of use. You may have heard this term used in reference to accident or paralysis victims: "his muscles atrophied because of non-use". Exposure to certain chemicals can cause internal organs to degrade, weaken and decrease in size, particularly with chronic (long-term) exposure. Autoignition: The autoignition temperature of a substance is the temperature at or above which a material will spontaneously ignite (catch fire) without anexternal spark or flame. Storing a substance anywhere near its autoignition temperature is a severe safety hazard. Be careful storing substances in hot areas, such as 1) sheds or cabinets exposed to direct sunlight, 2) adjacent to furnaces, hot water heaters or boilers or 3) places where flames or heat are often used. Knowing a substance's autoignition temperatures is also very useful in the event of a fire. The equipment for determining an autoignition temperature is very similar to that used for flash point determinations. Bradycardia: Bradycardia is a slow heart rate (60 beats per minute or slower) that does not meet the body's metabolic demands. Symptoms of bradycardia include dizziness, extreme fatigue, shortness of breath, or fainting spells. This can be compared to tachycardia, which is an extremely rapid heart rate, usually signified by a pulse of over 100 beats per minute. Adults usually have a resting heart rate of 70-80 beats per minute, although well-trained athletes can have resting rates in the 50's or 60's. Newborn babies have a normal heart rate of 120-160 beats per minute. A slowed heart rate can lead to a variety of other problems. First aid treatment may include administration of oxygen. Copyright © 2001 Marcel Dekker, Inc. HAZARDS IN THE CHEMICAL PROCESS INDUSTRIES 41 Bronchitis: Bronchitis is inflammation of the bronchi (air passages of the lungs consisting of muscle tissue lined with mucous membranes). Chronic bronchitis is defined by the presence of a mucus-producing cough most days of the month, three months of a year for two successive years without other underlying disease to explain the cough. Chronic bronchitis is usually associated with smoking. Certain occupations that involve irritating dust or fumes are at higher risk. The American Lung Association lists coal miners, grain handlers, metal molders, and other workers exposed to dust as being at a higher risk for chronic bronchitis. Carcinogen: A carcinogen is a substance that causes cancer (or is believed to cause cancer). A material that is carcinogenic is one that is believed to cause cancer. The process of forming cancer cells from normal cells or carcinomas is called carcinogenesis. OSHA's Hazardous Communications standard 1910.1200 accepts the following sources for establishing that a chemical is a known or potential carcinogen: National Toxicology Program (NTP), "Annual Report on Carcinogens" (latest edition); International Agency for Research on Cancer (IARC) "Monographs" (latest editions), part of the World Health Organization (WHO); 29 CFR part 1910, subpart Z, Toxic and Hazardous Substances, Occupational Safety and Health Administration. The "Registry of Toxic Effects of Chemical Substances" published by NIOSH indicates whether a chemical has been found by NTP or IARC to be a potential carcinogen. Carcinoma: A carcinoma is a malignant (cancerous) growth that arises from the epithelium (the covering of internal and external surfaces of the body, including the lining of vessels and other small cavities). This includes the skin and lining of the organs such as breast, prostate, lung, stomach or bowel. Carcinomas tend to spread (a process called metastasis) through the blood vessels, lymph channels or spinal fluid to other organs, such as the bone, liver, lung or the brain. According to the American Cancer Society, at least 80% of all cancers are carcinomas. CAS Number - Chemical Abstracts Service Registry Number: A CAS (Chemical Abstracts Service) Registry Number is a unique identifier that tells you, for example, that acetone and dimethyl ketone are actually the same substance. The Chemical Abstracts Service is a division of the American Chemical Society. OSHA only requires certain items on an MSDS and a CAS number is not one of them. However, authors of MSDS's are allowed to add additional information, such as the CAS number, if they desire. The numbers you see on trucks on the highway are not CAS Numbers, but U.S. Department of Transportation (DOT) codes, which are not necessarily specific to each chemical. Their aim is to assist emergency responders. Chronic Health Effect: A chronic health effect is an adverse health effect resulting from long-term exposure to a substance. The effects could be a skin Copyright © 2001 Marcel Dekker, Inc. 42 CHAPTER 2 rash, bronchitis, cancer or any other medical condition. An example would be liver cancer from inhaling low levels of benzene at your workplace over several years. The term is also applied to a persistent (months, years or permanent) adverse health effect resulting from a short-term (acute) exposure. Chronic effects from long-term exposure to chemicals are fairly common. Recognize the PEL (permissible exposure level) for each substance in your workplace and minimize your exposure whenever possible. Combustible: A combustible material can be a solid or liquid. The U.S. Occupational Health and Safety Administration (OSHA) defines a combustible liquid as "any liquid having a flash point at or above 100 °F (37.8 °C), but below 200 °F (93.3 °C), except any mixture having components with flashpoints of 200 °F (93.3 °C), or higher, the total volume of which make up 99 percent or more of the total volume of the mixture." Compare this definition to flammable, which indicates a liquid that is even easier to ignite (flash point below 100 °F). OSHA divides combustible (and flammable) liquids into several classes. If you'd like to see these, take a look at 29 CFR 1910.106. Combustible solids are those capable of igniting and burning. Wood and paper are examples of such materials. Proper storage and use of combustible materials is absolutely critical in maintaining a safe work place. Avoid placing or using combustible materials near sources of heat or flame. Conjunctivitis: Conjunctivitis (also known as pink eye because the white part of the eye becomes pink) is inflammation (swelling) of the mucous membrane lining the eye (the conjunctiva). This is often accompanied by itching and watery eyes and sometimes blurred vision, eye pain and sensitivity to light. This inflammation can be caused by physical injury, allergies, or chemical exposure, but is most commonly caused by bacterial or viral infection. These infections can be highly contagious and spread rapidly among schoolchildren or families. Bacterial conjunctivitis can be treated with antibiotic eye drops, prescribed by a physician, whereas viral conjunctivitis usually clears up on its own, if strict hygiene is followed. Exposure to chemicals that irritate the eyes (such as lachrymators) can cause conjunctivitis or make existing conjunctivitis worse. Seek medical treatment, if the condition does not clear up on its own. If you are not certain whether a chemical was splashed in your eye or you are suffering from conjunctivitis, you should consult a physician immediately. Cutaneous: Cutaneous relates to or affects the skin. The term subcutaneous refers to being below the skin (as in a penetrating injury or injection). Use your MSDS to determine the required personal protective equipment (PPE) that you must use. Protecting the skin (with gloves, aprons, coveralls, face masks etc.) is important. After all, the skin is the largest organ in the human body. Copyright © 2001 Marcel Dekker, Inc. [...]... copy for future reference OSHA has a suggested format for MSDS's, Form 174 (OMB # 121 8- 00 72) You can download this form in HTML or PDF format from the U.S Department of Labor's Occupational Safety and Health Administration world wide web site, if you wish While this format is nonmandatory, it is a frequently utilized format An MSDS can contain more information than that required by OSHA, but not less Form... point of 20 °C (68 °F) or less at 101.3 kPa (14.7 psi)) and which: (1) Is known to be so toxic to humans as to pose a hazard to health during transportation, or (2) In the absence of adequate data on human toxicity, is presumed to be toxic to humans because when tested on laboratory animals it has an LC50 value of not more than 5000 ml/m3 LC50 values for mixtures may be determined using the formula... damage Signs/Symptoms Jaundice, liver enlargement Nephrotoxins- produce kidney damage Edema, proteinuria Copyright © 20 01 Marcel Dekker, Inc Examples Carbon tetrachloride, nitrosamines Halogenated hydrocarbons, uranium 56 CHAPTER 2 Class and Definition Neurotoxins- produce their primary toxic effects on the Signs/Symptoms Narcosis, behavioral changes, decrease in Hematopoietic agents- act motor functions... the chemical literature should be used): Oral Toxicity: A liquid with an LD50 for acute oral toxicity of not more than 500 mg/kg or a solid with an LD5 0for acute oral toxicity of not more than 20 0 mg/kg Dermal Toxicity: A material with an LD50 for acute dermal toxicity of not more than 1000 mg/kg Inhalation Toxicity: A dust or mist with an LC50 for acute toxicity on inhalation of not more than 10 mg/L;... substance (other than a gas) is defined by 49 CFR 173.1 32 as a material "which is known to be so toxic to humans as to afford a hazard to health during transportation, or which, in the absence of adequate data on human toxicity: Is presumed to be toxic to humans because it falls within any one of the following categories when tested on laboratory animals (whenever possible, animal test data that has... gloves, respirators and fume hoods Related terms are carinogen, carcinoma, malignant, mutagen, and teratogen NIOSH - National Institute for Occupational Safety and Health: The National Institute for Occupational Safety and Health, NIOSH, is part of the U.S federal government's Centers for Disease Control and Prevention (CDC) NIOSH's web Copyright © 20 01 Marcel Dekker, Inc 50 CHAPTER 2 site is http://www.cdc.gov/niosh/homepage.html... location Exposure to toxic chemicals can cause a variety of edemas Pulmonary edema (fluid in the lungs) is particularly dangerous, if not treated Be sure to avoid inhalation of chemicals Copyright © 20 01 Marcel Dekker, Inc 44 CHAPTER 2 whenever possible and to use proper protective measures, as suggested on the MSDS (fume hoods, respirators, etc.) Emergency Planning and Community Right -To- Know Act (EPCRA):... The U.S Emergency Planning and Community Right -To- Know Act (EPCRA) also known as the Community Right -To- Know Act or SARA, Title III provides for the collection and public release of information about the presence and release of hazardous or toxic chemicals in the nation's communities The law requires industries to participate in emergency planning and to notify their communities of the existence of,... known Many teratogens cause effects at very low exposure levels Toxics Release Inventory (TRI): The Toxics Release Inventory (TRI) contains information concerning waste management activities and the release of over 600 toxic chemicals by facilities that manufacture, process, or otherwise use such materials Using this information, citizens, businesses, and governments can work together to protect the... Resins for moldings are dried and crushed or ground into molding powder Resins, such as the alkyd resins, to be used for protective coatings are normally transferred to an agitated thinning tank, where they are thinned with some type of solvent and then stored in large steel tanks equipped with water-cooled condensers to prevent loss of solvent to the atmosphere Still other resins are stored in latex form . Right -To- Know Act (EPCRA): The U.S. Emergency Planning and Community Right -To- Know Act (EPCRA) also known as the Community Right -To- Know Act or SARA, Title III provides for the . out a hard copy for future reference. OSHA has a suggested format for MSDS's, Form 174 (OMB # 121 8- 00 72) . You can download this form in HTML or PDF format from the . standard OSHA Form 174 format. ANSI-format sheets have all of the information required on the OSHA 174 format sheets, as well as additional useful information. The information