PAC Database - Detailed Chemical Data

Chemical Identity
Chemical CAS# UN# Health Code Numbers
Undecane 1120-21-4 2330
17.00
11.01
11.00
4.02
3.05
16.01
16.02
Formula Synonyms
C11H24 UNDECANE, HALPACLEAN, HENDECANE, N 11, N-UNDECANE, NIKKO ELACE, UNDÉCANE (DOT FRENCH), UNDECANO (DOT SPANISH)
Physical Properties
Mol Wt State MP (°C) BP (°C) VP (Hg) VP (°C) SG LEL (ppm)
156.35 L -25.75 195.6 0.7402
PAC Values
PAC Values (Original Units: ppm)
PAC-1 PAC-2 PAC-3
0.37 4.1 25
Converted PAC Values (mg/m3)
PAC-1 PAC-2 PAC-3
2.4 26 160
Technical Basis
A review of available sources identified rat LC50 and mouse LD50 animal toxicity data. 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. The rat LC¬50 was the most preferred species and route; it was selected as the TEEL-3 basis and scaled to a 60-minute equivalent using the ten Berge equation (Section 3.3.4). 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 (> 442 ppm/8H)
This review generated TEEL values that are more conservative than those in Rev. 29A. The Rev. 29A TEEL-3 basis was a rat oral LD50, while the current basis is a more preferred route, inhalation (LC50 > LD50,) and the same species. The methodology to derive TEEL-2 and TEEL-1 values remains unchanged (Table 3.5).
References
Rat LC50: Pharmacology and Toxicology, 62(259), 1988 [PMID:3413027]. Retrieved from: https://pubchem.ncbi.nlm.nih.gov/compound/Undecane.
https://pubchem.ncbi.nlm.nih.gov/source/hsdb/5791
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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.