Emergency and Continuous Exposure Limits for Selected Airborne Contaminants Volume 1

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TABLE 1.

Emergency and Continuous Exposure Limits

Compound	Duration of Exposure	Recommended Exposure Limit^a
Compound	Duration of Exposure	Previous	Current
Acetone	60 min	15,000	8,500
	24 hr	2,000	1,000
	90 d	300	200
Acrolein	10 min	—	0.1
	60 min	0.2	0.05^b
	24 h	0.1	0.01^b
	90 d	0.1	0.01
Arsine	60 min	1.0	1.0
	24 h	0.1	0.1
	90 d	0.01	—
Carbon disulfide	10 min	200	200
	30 min	100	100
	60 min	50	50
Chloroform	60 min	200	100
	24 h	30	30
	90 d	3	1
Fluorine	10 min	15	15
	30 min	10	10
	60 min	5	7.5
Mercury vapor mg/m³	24 h	2 mg/m³	0.2
mg/m³	90 d	0.01 mg/m³	0.01
Methane	24 h	5,000	5,000
	90 d	5,000	5,000
Ozone	60 min	1	1
	24 h	0.1	0.1
	90 d	0.02	0.02
Sulfuric acid mg/m³	10 min	5 mg/m³	5
mg/m³	30 min	2 mg/m³	2
mg/m³	60 min	1 mg/m³	1
^appm, unless otherwise stated. ^bTentative recommendation.