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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



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Emergency and Continuous Exposure Limits for Selected Airborne Contaminants: Volume 2 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

OCR for page 3
Emergency and Continuous Exposure Limits for Selected Airborne Contaminants: Volume 2 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