PAC Database - Detailed Chemical Data

Chemical Identity
Chemical CAS# UN# Health Code Numbers
Hypophosphorus acid; (Phosphonic acid) 6303-21-5 3264
14.01
11.01
14.02
7.01
4.07
3.06
3.07
7.11
Formula Synonyms
H3.O2.P HYPOPHOSPHOROUS ACID (CORROSIVE LIQUID, ACIDIC, INORGANIC, N, DIHYDROXYPHOSPHINE, HYDROXYPHOSPHINE OXIDE, HYPOPHOSPHOROUS ACID, PHOSPHINE OXIDE, HYDROXY-, PHOSPHONOUS ACID
Physical Properties
Mol Wt State MP (°C) BP (°C) VP (Hg) VP (°C) SG LEL (ppm)
66 S 26.5 130 1.439
PAC Values
PAC Values (Original Units: mg/m3)
PAC-1 PAC-2 PAC-3
30 330 2000
Converted PAC Values (ppm)
PAC-1 PAC-2 PAC-3
11 120 740
Technical Basis
No technical basis available
References
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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.