PAC Database - Detailed Chemical Data

Chemical Identity
Chemical CAS# UN# Health Code Numbers
Benzonitrile 100-47-0 2224
6.00
15.01
4.01
11.01
15.02
4.08
4.05
7.01
8.00
7.00
Formula Synonyms
C7H5N BENZONITRILE, BENZENE, CYANO-, BENZENENITRILE, BENZOIC ACID NITRILE, BENZONITRIL, BENZONITRILE (DOT FRENCH), BENZONITRILO (DOT SPANISH), CYANOBENZENE, PHENYL CYANIDE, PHENYLCYANIDE, UN 2224
Physical Properties
Mol Wt State MP (°C) BP (°C) VP (Hg) VP (°C) SG LEL (ppm)
103.13 L -12.8 191 0.768 25 1.01 @ 15°C
PAC Values
PAC Values (Original Units: ppm)
PAC-1 PAC-2 PAC-3
0.56 6.2 19
Converted PAC Values (mg/m3)
PAC-1 PAC-2 PAC-3
2.4 26 80
Technical Basis
A review of available sources identified AEGL-2 and AEGL-3 exposure limits for this chemical. The AEGLs were selected as the TEEL-3 and TEEL-2 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 ppm values consistent with Rev. 29A. Minor differences in the Rev. 29A reported TEEL-2 and TEEL-3 values in units mg/m3 may be due to conversion and rounding of these values, instead of use of source values. Values in units mg/m3 are reported as published in the technical support document Table 1-1, per handbook guidance (Section 3.4.7.2).
References
AEGLs: https://www.epa.gov/aegl/benzonitrile-results-aegl-program
https://www.ncbi.nlm.nih.gov/books/NBK224933/
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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.