PAC Database - Detailed Chemical Data

Chemical Identity
Chemical CAS# UN# Health Code Numbers
Phosgene 75-44-5 1076
11.00
10.00
14.00
Formula Synonyms
CCl2O DIPHOSGENE, CARBON DICHLORIDE OXIDE, CARBON OXYCHLORIDE, CARBONIC ACID DICHLORIDE, CARBONIC DICHLORIDE, CARBONYL CHLORIDE, CARBONYL DICHLORIDE, CG, CHLOROFORMYL CHLORIDE, CHLOROFORMYLCHLORIDE, DICHLOROFORMALDEHYDE, DIFOSGENO (DOT SPANISH), DIPHOSGÈNE (DOT FRENCH), FOSGENO (DOT SPANISH), NCI-C60219, PHOSGEN, PHOSGENE, PHOSGÈNE (DOT FRENCH)
Physical Properties
Mol Wt State MP (°C) BP (°C) VP (Hg) VP (°C) SG LEL (ppm)
98.92 G -127.78 8 750 7.2 1.3719
PAC Values
PAC Values (Original Units: ppm)
PAC-1 PAC-2 PAC-3
0.027 0.30 0.75
Converted PAC Values (mg/m3)
PAC-1 PAC-2 PAC-3
0.11 1.2 3.0
Technical Basis
A review of available sources identified exposure limits for this chemical including an AEGL-2 and AEGL-3. The AEGLs were selected as the TEEL-2 and TEEL-3 due to their priority among the emergency exposure limits (Section 1). Due to insufficient data, an AEGL-1 does not exist for this chemical; therefore, the TEEL-1 value was derived according to Table 3.5.
• TEEL-1 = TEEL-2/11
• TEEL-2 = AEGL-2
• TEEL-3 = AEGL-3
This review generated TEEL values consistent with Rev. 29A*; the minor difference in the Rev. 29A reported TEEL-3 value in units of mg/m3 may be due to conversion and rounding of this value, instead of use of the source value. Values in units of mg/m3 are reported as published in the technical support document Table 1-1, per handbook guidance (Section 3.4.7.2).
References
Chemical information: Retrieved from Table 1-2 of the EPA Technical Support Document. https://www.epa.gov/aegl/phosgene-results-aegl-program
AEGLs: https://www.epa.gov/aegl/phosgene-results-aegl-program
Other exposure limits: https://www.osha.gov/chemicaldata/583
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PAC values marked with a subscript "A" correspond to 60-minute AEGL values.
PAC values marked with a subscript "E" correspond to ERPG values.
PAC values marked by * are >= 10% lower explosive limit (LEL) but < 50% LEL.
PAC values marked by ** are > 50% LEL but < 100% LEL.
PAC values marked by *** are >= LEL.