Industrial Chemicals Pdf

[Azalee Rowling]

Thisvolume of the IARC Monographs provides evaluations of the carcinogenicity of five industrial chemicals: 1,1,1-trichloroethane, 1,2-diphenylhydrazine, diphenylamine, N-methyloIacrylamide, and isophorone.

1,2-Diphenylhydrazine was primarily used as an intermediate in the manufacture of benzidine dyes, which has ceased in the USA and European Union, although production might occur elsewhere. Additional uses include as an intermediate in drug manufacture.

Diphenylamine, N-methylolacrylamide, and isophorone are High Production Volume chemicals and intermediates used for a wide range of industrial applications. The use of diphenylamine in agrochemicals to prevent fruit scalding is prohibited in the European Union, but ongoing in the USA and elsewhere. Isophorone has been detected in numerous polymer-based products from food packaging to aquatic inflatables, and in food items, possibly because of agrochemical contamination or migration from packaging.

For all agents, data were sparse regarding exposure levels (apart from 1,1,1-trichloroethane, for which data were available mainly on exposures pre-dating the adoption of the Montreal Protocol), but indicated that exposures are higher in occupational situations than in the general population.

An IARC Monographs Working Group reviewed evidence from cancer studies in humans (available for 1,1,1-trichloroethane), cancer bioassays in experimental animals, and mechanistic studies to assess the carcinogenic hazard to humans of exposure to these agents and concluded that:

Evaluates the carcinogenic risk to humans posed by exposure to fourteen industrial chemicals, including several having considerable commercial importance as the building blocks of widely used polymers and copolymers. While some of these chemicals are evaluated for the first time, the majority have been re-evaluated in the light of substantial new data and more precise methodological guidelines for the interpretation of findings. In view of the widespread industrial use of these chemicals, particular emphasis is placed on the risk of cancer in occupationally exposed workers. Over 1,800 studies were critically assessed. The most extensive monographs cover ethylene oxide, styrene, and acrylamide. Ethylene oxide is an important raw material for making major consumer goods in virtually all industrialized countries. On the basis of evidence of small but consistent excesses of lymphatic and haematopoietic cancer found in both human and animal studies, the monograph concludes that ethylene oxide is carcinogenic to humans. For styrene, one of the most important monomers worldwide, the evaluation concentrated on evidence of a link between exposure and the risk for lymphatic and haematopoietic cancer, concluding that styrene is possibly carcinogenic to humans. Acrylamide was classified as probably carcinogenic to humans. Among the other chemicals evaluated, styrene-7,8-oxide was classified as probably carcinogenic to humans. Propylene oxide, isoprene, 4-vinylcyclohexene, and 4-vinylcyclo-hexene diepoxide were classified as possibly carcinogenic. The remaining chemicals, ethylene, propylene, vinyl toluene, N-methylol-acrylamide, methyl methacrylate, and 2-ethylhexyl acrylate, could not be classified. For two of these, methyl methacrylate and vinyl toluene, experimental evidence indicated a lack of carcinogenicity.

Industrial chemicals have a variety of different applications around the world. PCBs, a well-known industrial chemical, bind strongly to soils. where they remain for years or even decades. PCBs have been shown to cause cancer in animals, as well as other negative effects on the immune, reproductive, nervous and endocrine system.

Industrial chemicals are chemicals that are developed for use in the industrial processing of chemicals. Some industrial chemicals are only used in industrial production processes while many others are used as ingredients in the commercial products that appear in consumer markets. The class of industrial chemicals is broad, including: solvents, reactants, lubricants, coatings, dyes, colorants, inks, mastics, stabilizers, plasticizers, fragrances, flame retardants, conductors and insulators. Significant exposures to many of these chemicals can result in harmful effects to people or the environment.

Some industrial chemicals are POPs. The human health effects of industrial chemicals that are POPs can range from mild skin irritation, dizziness and headaches to chronic effects on the immune, reproduction, nervous and endocrine systems. Some industrial POPs are also recognized as cancer causing agents. All share the common POPs characteristics, they:

IPEN (International Pollutants Elimination Network) is a global network of public interest organizations improving chemical policies and raising public awareness to ensure that hazardous substances are no longer produced, used, or disposed of in ways that harm human health and the environment. IPEN's Privacy Policy

Colonial Chemical Solutions, Inc. (CCS), a subsidiary of Savannah-based Colonial Group, Inc., has announced the acquisition of Industrial Chemicals Inc. The 80-year-old company, headquartered in Richmond, Virginia, provides a wide selection of industrial chemicals and offers services including repackaging, storage, custom blending, contract storage and packaging, and chemical logistical support.

The initial reporting period by manufacturers, processors and importers was January to May of 1978 for chemical substances that had been in commerce since January of 1975. The Inventory was initially published in 1979, and a second version, containing about 62,000 chemical substances, was published in 1982. The TSCA Inventory has continued to grow since then, and now lists more than 86,000 chemicals.

In addition to defining whether a specific substance is "new" or "existing," the Inventory also contains "flags" for those existing chemical substances that are subject to manufacturing or use restrictions.

Determining if a chemical is on the Inventory is a critical step before beginning to manufacture (which includes importing) a chemical substance. Section 5 of TSCA requires anyone who plans to manufacture a new chemical substance for a non-exempt commercial purpose to provide EPA with a Premanufacture Notice (PMN) at least 90 days before initiating the activity.

EPA will consider the information submitted in a bona fide notice and, if the Agency believes that the submitter has demonstrated a genuine intent to manufacture or import, search the full TSCA Inventory master file and provide a written determination to the submitter on the TSCA Inventory status for the chemical substance.

After PMN review has been completed, the company that submitted the PMN must provide a Notice of Commencement of Manufacture or Import (NOC, EPA Form 7710-56) to EPA within 30 calendar days of the date the substance is first manufactured or imported for nonexempt commercial purposes.

A chemical attack is the spreading of toxic chemicals with the intent to do harm. A wide variety of chemicals could be made, stolen, or otherwise acquired for use in an attack. Industrial chemical plants or the vehicles used to transport chemicals could also be sabotaged. Harmful chemicals that could be used in an attack include:

The U.S. Department of Homeland Security and The National Academies teamed up in 2003 to produce fact sheets on chemical, biological, radiological, and nuclear attacks designed to help better prepare the media for the types of threats facing the nation.

Each fact sheet provides clear, concise information to the media and the public on the characteristics, dangers, and consequences associated with various types of attacks. Each fact sheet has been through a rigorous peer review process evaluated by independent members of the National Academies, many of whom are recognized as the nation's foremost experts in their field.

The chemical industry comprises the companies and other organizations that develop and produce industrial, specialty and other chemicals. Central to the modern world economy, it converts raw materials (oil, natural gas, air, water, metals, and minerals) into commodity chemicals for industrial and consumer products. It includes industries for petrochemicals such as polymers for plastics and synthetic fibers; inorganic chemicals such as acids and alkalis; agricultural chemicals such as fertilizers, pesticides and herbicides; and other categories such as industrial gases, speciality chemicals and pharmaceuticals.

Although chemicals were made and used throughout history, the birth of the heavy chemical industry (production of chemicals in large quantities for a variety of uses) coincided with the beginnings of the Industrial Revolution.

One of the first chemicals to be produced in large amounts through industrial processes was sulfuric acid. In 1736 pharmacist Joshua Ward developed a process for its production that involved heating sulfur with saltpeter, allowing the sulfur to oxidize and combine with water. It was the first practical production of sulphuric acid on a large scale. John Roebuck and Samuel Garbett were the first to establish a large-scale factory in Prestonpans, Scotland, in 1749, which used leaden condensing chambers for the manufacture of sulfuric acid.[1][2]

In the early 18th century, cloth was bleached by treating it with stale urine or sour milk and exposing it to sunlight for long periods of time, which created a severe bottleneck in production. Sulfuric acid began to be used as a more efficient agent as well as lime by the middle of the century, but it was the discovery of bleaching powder by Charles Tennant that spurred the creation of the first great chemical industrial enterprise. His powder was made by reacting chlorine with dry slaked lime and proved to be a cheap and successful product. He opened the St Rollox Chemical Works, north of Glasgow, and production went from just 52 tons in 1799 to almost 10,000 tons just five years later.[3]

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