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TABLE 1.

Emergency and Continuous Exposure Limits

Compound

Duration of Exposure

Recommended Exposure Limita

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

0.05b

 

24 h

0.1

0.01b

 

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.



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