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Suggested Citation:"Summary." National Research Council. 1984. Emergency and Continuous Exposure Limits for Selected Airborne Contaminants: Volume 2. Washington, DC: The National Academies Press. doi: 10.17226/690.
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SUMMARY

Because this report deals with diverse substances, a conventional summary would be inappropriate. Table 1 summarizes previously recommended and currently recommended emergency exposure limits (EELs) for up to 24 h and continuous exposure limits (CELs) for 90 d for chemicals suggested for review by military sponsors of the Committee on Toxicology.

TABLE 1

Emergency and Continuous Exposure Limits

Substance

Duration of Exposure

Previous Recommendations

Current Recommendations

Year

Limit

Chlorine

60 min

24 h

90 d

1971

3 ppm

1 ppm

0.1 ppm

3 ppm

0.5 ppm

0.1 ppm

Chlorine trifluoride

10 min

30 min

60 min

1968

7 ppm

3 ppm

1 ppm

7 ppm

3 ppm

1 ppm

Ethanolamine

60 min

24 h

90 d

1967

50 ppm

3 ppm

0.5 ppm

50 ppm

3 ppm

0.5 ppm

Trichlorofluoromethane

(FC 11)

60 min

24 h

90 d

1966

30,000 ppm

20,000 ppm

1,000 ppm

1,500 ppm

500 ppm

100 ppm

Dichlorodifluoromethane

(FC 12)

60 min

24 h

90 d

1966

30,000 ppm

20,000 ppm

1,000 ppm

10,000 ppm

1,000 ppm

100 ppm

Dichlorofluoromethane

(FC 21)

60 min

24 h

90 d

100 ppm

3 ppm

1 ppm

Trichlorotrifluoroethane

(FC 113)

60 min

24 h

90 d

1969

1,500 ppm

200 ppm

100 ppm

1,500 ppm

500 ppm

100 ppm

Dichlorotetrafluoroethane

(FC 114)

60 min

24 h

90 d

1966

30,000 ppm

20,000 ppm

1,000 ppm

10,000 ppm

1,000 ppm

100 ppm

Suggested Citation:"Summary." National Research Council. 1984. Emergency and Continuous Exposure Limits for Selected Airborne Contaminants: Volume 2. Washington, DC: The National Academies Press. doi: 10.17226/690.
×

Substance

Duration of Exposure

Previous Recommendations

Current Recommendations

Year

Limit

Isopropyl alcohol

60 min

24 h

90 d

1966

400 ppm

200 ppm

50 ppm

400 ppm

200 ppm

1 ppm

Phosgene

60 min

24 h

90 d

1966

1 ppm

0.1 ppm

0.05 ppm

0.2 ppm

0.02 ppm

0.01 ppm

Sodium hydroxide

10 min

30 min

60 min

1965

4 mg/m3

4 mg/m3

2 mg/m3

2 mg/m3

2 mg/m3

2 mg/m3

Sulfur dioxide

10 min

30 min

60 min

24 h

90 d

1966

30 ppm

20 ppm

10 ppm

5 ppm

1 ppm

30 ppm

20 ppm

10 ppm

5 ppm

1 ppm

Vinylidene chloride

24 h

90 d

1966

25 ppm

2 ppm

10 ppm

0.15 ppm

Xylene

60 min

24 h

90 d

1966

200 ppm

100 ppm

50 ppm

200 ppm

100 ppm

50 ppm

Suggested Citation:"Summary." National Research Council. 1984. Emergency and Continuous Exposure Limits for Selected Airborne Contaminants: Volume 2. Washington, DC: The National Academies Press. doi: 10.17226/690.
×
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Suggested Citation:"Summary." National Research Council. 1984. Emergency and Continuous Exposure Limits for Selected Airborne Contaminants: Volume 2. Washington, DC: The National Academies Press. doi: 10.17226/690.
×
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