Table 5. Occupational exposure limits and guidelines for hydrochloric acid/hydrogen chloride - Occupational Exposures to Mists and Vapours from Strong Inorganic Acids; and Other Industrial Chemicals

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Country or region	Year	Concentration (mg/m³)	Interpretation^a
Australia	1990	7	TWA
Austria	1982	7	TWA
Belgium	1990	7.5	Ceiling
Brazil	1978	5.5	Ceiling
Bulgaria	1977	5	TWA
Chile	1983	5.6	Ceiling
China	1979	15	TWA
Czechoslovakia	1990	5	TWA
		10	STEL
Denmark	1990	7	Ceiling
Egypt	1967	15	TWA
Germany	1990	7^b	TWA
Finland	1990	7^b	STEL (15 min)
France	1990	7.5	STEL
Hungary	1990	5^b	Ceiling
India	1983	7	Ceiling
Indonesia	1978	7	Ceiling
Italy	1978	4	TWA
Japan	1990	7.5	Ceiling
Mexico	1983	7	TWA
Netherlands	1986	7	Ceiling
Norway	1990	7	Ceiling
Poland	1990	5	TWA
Romania	1975	10	STEL
Sweden	1990	8	Ceiling
Switzerland	1990	7.5	Ceiling
		15	STEL
Taiwan	1981	7^b	Ceiling
United Kingdom	1990	7	TWA
		7	STEL (10 min)
USA
ACGIH	1990	7.5	Ceiling
NIOSH	1990	7	Ceiling
OSHA	1989	7	Ceiling
USSR	1990	5	STEL
Venezuela	1978	7	TWA
Yugoslavia	1971	7	Ceiling
		7	TWA

: Cook (1987); US Occupational Safety and Health Administration (OSHA) (1989); American Conference of Governmental Industrial Hygienists (ACGIH) (1990); Direktoratet for Arbeidstilsynet (1990); US National Institute for Occupational Safety and Health (NIOSH) (1990); International Labour Office (1991)
a: TWA, 8-h time-weighted average; STEL, short-term exposure limit
b: Skin irritant notation

Occupational Exposures to Mists and Vapours from Strong Inorganic Acids; and Other Industrial Chemicals.

IARC Monographs on the Evaluation of Carcinogenic Risks to Humans, No. 54.

IARC Working Group on the Evaluation of Carcinogenic Risks to Humans.

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