PAC Database - Detailed Chemical Data

Chemical Identity
Chemical CAS# UN# Health Code Numbers
Xylene, m- (inlcudes o- (95-47-6) and p- (106-42-3) isomers) 108-38-3 1307
14.01
11.01
14.02
4.05
7.01
8.00
7.00
11.00
4.02
4.09
Formula Synonyms
C8H10 M-XYLENE, 1,3-DIMETHYLBENZENE, 1,3-XYLENE, BENZENE, M-DIMETHYL-, M-DIMETHYLBENZENE, M-METHYLTOLUENE, M-XYLOL, META-XYLENE, XYLOL
Physical Properties
Mol Wt State MP (°C) BP (°C) VP (Hg) VP (°C) SG LEL (ppm)
106.17 L -47.8 139.07 7.5 23.4 0.8598 11000
PAC Values
PAC Values (Original Units: ppm)
PAC-1 PAC-2 PAC-3
560ₐ 4000ₐ* 11000ₐ*
Converted PAC Values (mg/m3)
PAC-1 PAC-2 PAC-3
2400 17000 48000
Technical Basis
A review of available sources was unable to identify exposure limits or toxicity data for this chemical. The AEGLs for the chemical xylene (CASRN: 1330-20-7) were used as the basis of the TEELs because all three isomers (p-xylene, o-xylene, and m-xylene) are structurally similar.
TEEL-1= AEGL-1 (60-minute; xylene, CASRN: 1330-20-7)
TEEL-2= AEGL-2
TEEL-3= AEGL-3

This review resulted in values that are consistent with Rev. 29A.
References
See table 6-1 for the Xylene AEGL values in both ppm and mg/m3: https://www.epa.gov/sites/default/files/2014-11/documents/xylenes_final_volume_9_2010.pdf
Xylene: https://pubchem.ncbi.nlm.nih.gov/compound/Xylene
m-Xylene: https://pubchem.ncbi.nlm.nih.gov/compound/m-xylene
p-Xylene: https://pubchem.ncbi.nlm.nih.gov/compound/7809
o-Xylene: https://pubchem.ncbi.nlm.nih.gov/compound/7237
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