PAC Database - Detailed Chemical Data

Chemical Identity
Chemical CAS# UN# Health Code Numbers
Benzotriazole 95-14-7
11.00
15.01
7.01
8.00
4.06
12.00
16.02
Formula Synonyms
C6.H5.N3 1,2,3-BENZOTRIAZOLE, 1,2,3-1H-BENZOTRIAZOLE, 1,2,3-TRIAZA-1H-INDENE, 1,2,3-TRIAZAINDENE, 1,2-AMINOAZOPHENYLENE, 1H-1,2,3-BENZOTRIAZOLE, 1H-BENZOTRIAZOLE, 2,3-DIAZAINDOLE, AZIMIDOBENZENE, AZIMINOBENZENE, BENZENE AZIMIDE, BENZISOTRIAZOLE, BENZTRIAZOLE, BT 120, COBRATEC #99, COBRATEC 35G, COBRATEC 99, CVI, D 32-108, ENTEK, IRGASTAB I 489, ISK 3, NCI-C03521, NSC-3058, U-6233, VERZONE CRYSTAL
Physical Properties
Mol Wt State MP (°C) BP (°C) VP (Hg) VP (°C) SG LEL (ppm)
119.14 S
PAC Values
PAC Values (Original Units: mg/m3)
PAC-1 PAC-2 PAC-3
1.2 13 77
Converted PAC Values (ppm)
PAC-1 PAC-2 PAC-3
0.25 2.7 16
Technical Basis
A review of available sources identified the following: mouse and rat acute toxicity data (LC50, LCLo, and LD50). Data sources were selected according to the hierarchy listed in Table 3.1. Toxicity data were selected according to type of exposure, species, and route according to the hierarchies stated in Sections 3.3.1, 3.3.2, and evaluated using factors in Tables 3.2, 3.3, and 3.4. Inhalation exposures were scaled to 60-minute equivalents using the ten Berge equation (Section 3.3.4). The most preferred route and species, a rat LC50, was selected as the TEEL-3 basis. TEEL-2 and TEEL-1 values were derived according to Table 3.5.
• TEEL-1 = TEEL-2/11
• TEEL-2 = TEEL-3/6
• TEEL-3 = Rat LC50 (1910 mg/m3/3H)
This review generated TEEL values consistent with those in Rev. 29A.
References
Rat LC50, National Technical Information Service., OTS0520637. Retrieved from: https://pubchem.ncbi.nlm.nih.gov/compound/1H-Benzotriazole.
Rat LCLo¬. HPVIS study value, retrieved from: https://comptox.epa.gov/dashboard/chemical/hazard/DTXSID6020147.
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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.