PAC Database - Detailed Chemical Data

Chemical Identity
Chemical CAS# UN# Health Code Numbers
Acenaphthene 83-32-9 3082
15.01
11.01
15.02
4.09
10.00
3.09
3.02
3.10
Formula Synonyms
C12H10 ACENAPHTHENE, 1,2-DIHYDROACENAPHTHYLENE, 1,8-DIHYDROACENAPHTHYLENE, 1,8-ETHYLENENAPHTHALENE, ETHYLENENAPHTHALENE, NAPHTHYLENEETHYLENE, PERI-ETHYLENENAPHTHALENE, PERIETHYLENENAPHTHALENE
Physical Properties
Mol Wt State MP (°C) BP (°C) VP (Hg) VP (°C) SG LEL (ppm)
154.22 S 95 277.5 10 131.2 1.024
PAC Values
PAC Values (Original Units: mg/m3)
PAC-1 PAC-2 PAC-3
3.6 40 240
Converted PAC Values (ppm)
PAC-1 PAC-2 PAC-3
0.57 6.3 38
Technical Basis
Considering the species/route preferability, source credibility, and conservatism (Section 3.3), a rat intraperitoneal lethal dose (50% kill) is used for TEEL-3 development (from RTECs). Independent data is not available for TEEL-2 or TEEL-1; these are calculated from adjustment factors in Table 3.5.
• TEEL-1 = TEEL-2/11
• TEEL-2 = TEEL-3/6
• TEEL-3 = Estimated from rat intraperitoneal LD50 (600 mg/kg)
This review generated TEEL values that are consistent with those in Rev. 29A.
References
https://cameochemicals.noaa.gov/chemical/10358
Rat intraperitoneal LD50: Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene and Occupational Diseases., 14(6)(46), 1970 via PubChem: National Center for Biotechnology Information (2023). PubChem Compound Summary for CID 6734, Acenaphthene. Retrieved from https://pubchem.ncbi.nlm.nih.gov/compound/Acenaphthene
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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.