PAC Database - Detailed Chemical Data

Chemical Identity
Chemical CAS# UN# Health Code Numbers
Trimethylbenzene, 1,2,4-; (Pseudocumene) 95-63-6 1993
15.01
11.01
15.02
4.08
7.01
8.00
11.00
4.06
4.07
3.05
Formula Synonyms
C9H12 1,2,4-TRIMETHYLBENZENE, 1,2,5-TRIMETHYLBENZENE, 1,3,4-TRIMETHYLBENZENE, ASSYMETRICAL TRIMETHYLBENZENE, ASYMMETRICAL TRIMETHYLBENZENE, METHYL-P-XYLENE, PSEUDOCUMENE, PSEUDOCUMOL, PSI-CUMENE, PSICUMENE
Physical Properties
Mol Wt State MP (°C) BP (°C) VP (Hg) VP (°C) SG LEL (ppm)
120.19 L -43.77 169.38 0.75 11 0.8758 @ 20°C 9000
PAC Values
PAC Values (Original Units: ppm)
PAC-1 PAC-2 PAC-3
140ₐ 360ₐ 480
Converted PAC Values (mg/m3)
PAC-1 PAC-2 PAC-3
690 1800 2400
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.