PAC Database - Detailed Chemical Data

Chemical Identity
Chemical CAS# UN# Health Code Numbers
Diphenyloxazole, 2,5- 92-71-7
15.01
15.02
11.01
4.07
4.10
4.09
Formula Synonyms
C15H11NO
Physical Properties
Mol Wt State MP (°C) BP (°C) VP (Hg) VP (°C) SG LEL (ppm)
221.25 S 74 360 1.0940 @ 100°C
PAC Values
PAC Values (Original Units: mg/m3)
PAC-1 PAC-2 PAC-3
2.5 27 160
Converted PAC Values (ppm)
PAC-1 PAC-2 PAC-3
0.28 3.0 18
Technical Basis
A review of limited sources identified mouse intraperitoneal LD¬¬50 data that was selected as the TEEL-3 basis and evaluated using factors in Tables 3.2, 3.3, and 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 = Mouse intraperitoneal LD50 (750 mg/kg)
This review generated TEEL values that are consistent with Rev. 29A*.
References
Chemical information: https://pubchem.ncbi.nlm.nih.gov/compound/2_5-Diphenyloxazole
National Technical Information Service., AD277-689. Retrieved from: https://pubchem.ncbi.nlm.nih.gov/compound/2_5-Diphenyloxazole
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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.