PAC Database - Detailed Chemical Data

Chemical Identity
Chemical CAS# UN# Health Code Numbers
Hydrogen chloride; (Hydrochloric acid) 7647-01-0 2186
6.00
14.01
4.01
11.01
14.02
4.08
7.00
11.00
4.02
4.09
Formula Synonyms
ClH HYDROCHLORIC ACID, HYDROGEN CHLORIDE, ANHYDROUS, ACIDE CHLORHYDRIQUE (DOT FRENCH), ACIDE MURIATIQUE (DOT FRENCH), ACIDO CLORHÍDRICO (DOT SPANISH), ACIDO MURIÁTICO (DOT SPANISH), ANHYDROUS HYDROCHLORIC ACID, CHLOROHYDRIC ACID, DILUTE HYDROCHLORIC ACID, HYDROCHLORIC ACID (CONC 37% OR GREATER), HYDROCHLORIC ACID GAS, HYDROGEN CHLORIDE, HYDROGEN CHLORIDE (HCL), MURIATIC ACID, HYDROGEN CHLORIDE (GAS ONLY), HYDROGEN CHLORIDE DIMER, MURIATIC ACID, NA 1789, SPIRITS OF SALT, UN 1050, UN 1789, UN 2186, HYDROGEN CHLORIDE, REFRIGERATED LIQUID, HYDROCHLORIC ACID, MIXTURE, HYDROCHLORIC ACID, SOLUTION, HYDROGEN CHLORIDE (ANHYDROUS),
Physical Properties
Mol Wt State MP (°C) BP (°C) VP (Hg) VP (°C) SG LEL (ppm)
36.46 G -114.17 -85 750 -85.2 1.49
PAC Values
PAC Values (Original Units: ppm)
PAC-1 PAC-2 PAC-3
1.8 22 100
Converted PAC Values (mg/m3)
PAC-1 PAC-2 PAC-3
2.7 33 150
Technical Basis
A review of available sources identified AEGLs for this chemical. The AEGLs were selected due to their priority among Protective Action Criteria (Section 1). Values in units mg/m3 are reported as published in the technical support Table 2-1, per handbook guidance (Section 3.4.7.2).
• PAC-1 = AEGL-1
• PAC-2 = AEGL-2
• PAC-3 = AEGL-3
This review generated PAC ppm values consistent with Rev. 29A. The difference in the reported PAC-3 value in units mg/m3 may be due to conversion and rounding of this value, instead of use of the source value.
References
AEGLs (Table 2-1) and chemical information (Table 2-2) retrieved from: https://www.epa.gov/aegl/hydrogen-chloride-results-aegl-program
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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.