PAC Database - Detailed Chemical Data

Chemical Identity
Chemical CAS# UN# Health Code Numbers
Hydrogen cyanide; (Hydrocyanic acid) 74-90-8 1614
17.00
15.01
4.01
11.01
4.08
4.05
7.01
8.00
11.00
4.09
Formula Synonyms
CHN HYDROGEN CYANIDE, ANHYDROUS, STABILIZED (ABSORBED), ACIDO CIANHÍDRICO, ANHIDRO, ESTABILIZADO (ABSORBIDO) (DOT SP, ACIDO CIANHÍDRICO, ESTABILIZADO (ABSORBIDO) (DOT SPANISH), CARBON HYDRIDE NITRIDE (CHN), CIANURO DE HIDRÓGENO, ANHIDRO, ESTABILIZADO (ABSORBIDO) (DOT, CIANURO DE HIDRÓGENO, ESTABILIZADO (ABSORBIDO) (DOT SPANISH), CYANURE D^HYDROGÈNE, ANHYDRE, STABILISÉ (ABSORBÉ) (DOT FRENC, CYANURE D'HYDROGÈNE, STABILISÉ (ABSORBÉ) (DOT FRENCH), EVERCYN, FORMIC ANAMMONIDE, FORMONITRILE, HYDROCYANIC ACID, HYDROGEN CYANIDE, HYDROGEN CYANIDE, STABILIZED (ABSORBED), PRUSSIC ACID, HYDROCYANIC ACID, LIQUEFIED, HYDROCYANIC ACID SOLUTION, [< 5% HYDROCYANIC ACID],
Physical Properties
Mol Wt State MP (°C) BP (°C) VP (Hg) VP (°C) SG LEL (ppm)
27.03 L or G -13.29 26 750 25.4 0.6876 @ 20°C 56000
PAC Values
PAC Values (Original Units: ppm)
PAC-1 PAC-2 PAC-3
2ₐ 7.1ₐ 15ₐ
Converted PAC Values (mg/m3)
PAC-1 PAC-2 PAC-3
2.2 7.8 17
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.