ACGIH Hygienists

Threshold Limit Values for Chemical Substances in the Work Environment Adopted by ACGIH for 1985—86," American Conference of Government Industrial Hygienists, Cincinnati, Ohio, 1985. 

American Conference of Government Industrial Hygienists (ACGIH) threshold limit value = 5 ppm on an 8-h time-weighted average. 

The OSHA permissible exposure limit (11) and the American Conference of Governmental Industrial Hygienists (ACGIH) estabHshed threshold limit value (TLV) (12) for fluorides is 2.5 mg of fluoride per cubic meter of air. This is the TLV—TWA concentration for a normal 8-h work day and a 40-h work week. 

These salts are corrosive and are to be considered toxic because of the presence of Ag+ ions. The American Conference of Government Industrial Hygienists (ACGIH) (1992—1993) has adopted TWA values of 0.01 mg/m for silver metal and 0.01 mg/m for soluble silver salts. TWA for fluorides as F ions is 2.5 mg/m. The MSDS should be consulted prior to use. Skin contact and inhalation should be avoided. 

Formaldehyde is classified as a probable human carcinogen by the International Agency for Research on Cancer (lARC) and as a suspected human carcinogen by the American Conference of Governmental Industrial Hygienists (ACGIH). This is based on limited human evidence and on sufficient evidence in experimental animals (136). Lifetime inhalation studies with rodents have shown nasal cancer at formaldehyde concentrations that overwhelmed cellular defense mechanisms, ie, 6 to 15 ppm. No nasal cancer was seen at 2 ppm or lower levels (137). 

TEJCs Threshold Eimit Values and Biological Exposure Indices, American Conference of Governmental Industrial Hygienists (ACGIH), Cincinnati, Ohio, 1990-1991. 

The U.S. Occupational Safety and Health Administration (OSHA) has set a ceiling level for iodine of 0.1 ppm in air. The American Conference of Government and Industrial Hygienists (ACGIH) estabUshed 0.1 ppm as the TLV (TWA) for iodine. The maximum allowable concentration in air (MAK value) is also 0.1 ppm (104—106). 

The 1994—1995 threshold limit values as recommended by the American Conference of Governmental Industrial Hygienists (ACGIH) are given in Table 8. These time-weighted average values are those levels to which nearly all workers may be exposed for an 8-h workday and a 40-h work week without adverse effect (99). 

The U.S. Department of Labor (OSHA) has ruled that an employee s exposure to aniline in an 8-h work shift of a 40-h work week shaU not exceed an 8-h time-weighted average (TWA) of 5 ppm vapor in air. The American Conference of Governmental Industrial Hygienists (ACGIH) recommends a... 

The threshold limit value (TLV) set by the American Conference of Industrial Hygienists (ACGIH) for teUurium and its compounds is 0.1 mg/m which is about ten times the amount which has been known to produce the adverse garUc odor (45,50). The ACGIH TLV for teUurium hexafluoride is 0.1 mg/m or 0.02 ppm of air. Likewise, the U.S. Occupational Safety and Health Administration (OSHA) has estabUshed its permissible exposure limit (PEL) for teUurium and its compounds at 0.1 mg/m the PEL for teUurium hexafluoride is 0.2 mg/m or 0.02 ppm of air (50). 

ACGIH, Documentation of the Threshold Eimit Haluesfor Substances in Workroom Fiir, American Conferences of Governmental Industrial Hygienists, 1977. 

Toxicity. 1,1-Dichloroethane, like all volatile chlorinated solvents, has an anesthetic effect and depresses the central nervous system at high vapor concentrations. The 1991 American Conference of Governmental Industrial Hygienists (ACGIH) recommends a time-weighted average (TWA) solvent vapor concentration of 200 ppm and a permissible short term exposure level (STEL) of 250 ppm for worker exposure. The oral LD q of... 

TLV means threshold limit value (estabhshed by the American Conference of Government Industrial Hygienists, or ACGIH). TLV-C is the concentration in air that should not be exceeded during any pari of the working exposure. 

ACGIH 1986. Industrial Ventilation—A Manual of Recommended Practice, 19th ed. American Conference of Governmental Hygienists, Cincinnati, Ohio. 

ACGIH American Conference of Government Industrial Hygienists... 

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