Aromatic hydrocarbons - 3 entradas encontradas
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- País / Organización: Estados Unidos
- Aromatic hydrocarbons
Environmental Protection Agency (EPA)
EPA Final Test Rule - Cumene [USA]
This final test rule is issued under the Toxic Substances Control Act, requiring manufacturers and processors of cumene (synonym: isopropyl benzene) to determine the health and environmental effects of this substance and on its chemical fate. Extensive commentary on regulatory history and on testing already performed.
Federal Register, 27 July 1988, Vol.53, No.144, p.28195-28206. 3 ref.
Department of Labor, Occupational Safety and Health Administration (OSHA)
Occupational exposure to benzene [USA]
The 1978 US standard on occupational exposure to benzene (see CIS 78-1937) was vacated (voided) by the US Supreme Court in 1980, which meant that the old (1971) OSHA standard of 10ppm remained in effect. After further risk assessment, OSHA issued this reduced standard, reducing the permissible exposure limit from 10ppm to an 8h TWA of 1ppm and a short-term exposure limit of 5ppm. The effective date of the standard is 10 Dec. 1987. The risk assessment that led to the standard, including both epidemiologic studies and animal experiments and the reasons for the adoption of this standard, are discussed in detail. Also included: technological, economic and environmental aspects of the new standard, exposure monitoring, respiratory protection, protective clothing, medical surveillance, communication of benzene hazards to employees, recordkeeping, a substance safety data sheet on benzene.
Federal Register, 11 Sep. 1987, Vol.52, No.176, p.34460-34578. Also available separately from: OSHA Office of Publications, US Department of Labor, Room N-3101, 200 Constitution Avenue NW, Washington, DC 20210, USA.
Department of Labor, Occupational Safety and Health Administration, Washington.
Occupational exposure to benzene.
This permanent standard (entry into force: 13 Mar. 1978) limits employee exposure to benzene to 1ppm averaged over 8h, with a ceiling level of 5ppm for any 15min period and an action level of 0.5ppm. It also provides limits on eye and skin contact with benzene. Other provisions relate to measurement of exposure, engineering controls, work practices, personal protective clothing and equipment, signs and labels, employee training, medical surveillance and recordkeeping. Sections of the document are devoted to health effects (general, acute, chronic); leukaemia; economic considerations; air monitoring; medical surveillance; compliance and other costs for petroleum refineries, coke plants, petrochemical industry, bulk terminals, oil and gas production, transport, laboratories, rubber products, and other industries; etc. Explanation of the standard.
Federal Register, Feb. 1978, Vol.43, No.29, p.5918-5970.