PAC Database - Detailed Chemical Data

Chemical Identity
Chemical CAS# UN# Health Code Numbers
Methacrylic anhydride 760-93-0
15.01
15.02
11.01
4.07
Formula Synonyms
C8H10O3 METHACRYLIC ANHYDRIDE, 2-PROPENOIC ACID, 2-METHYL-, ANHYDRIDE, METHACRYLIC ACID ANHYDRIDE, METHACRYLOYL ANHYDRIDE
Physical Properties
Mol Wt State MP (°C) BP (°C) VP (Hg) VP (°C) SG LEL (ppm)
154.18 L 240 0.01 25 1.035
PAC Values
PAC Values (Original Units: mg/m3)
PAC-1 PAC-2 PAC-3
0.41 4.5 16
Converted PAC Values (ppm)
PAC-1 PAC-2 PAC-3
0.065 0.71 2.5
Technical Basis
A review of available sources identified mouse LC50 toxicity data and LOC. Data sources were selected according to the hierarchy listed in Table 3.1. Toxicity data was 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 2-hour mouse LC50 was selected as the TEEL-3 basis and scaled to 60-minute equivalent using the ten Berge equation (Section 3.3.4). The LOC was selected as the TEEL-2. The TEEL-1 value was derived according to Table 3.5.
• TEEL-1 = TEEL-2/11
• TEEL-2 = LOC (0.0045 g/m3)
• TEEL-3 = Mouse LC50 (450 mg/ m3/2hr)
This review generated TEEL values that are consistent with Rev. 29A*.
References
Chemical information (Chemical formula, Molecular weight, and Chemical phase). Retrieved from: https://pubchem.ncbi.nlm.nih.gov/compound/Methacrylic-anhydride
LOC. Appendix C, pg. C-6. Retrieved from: https://www.epa.gov/sites/default/files/2015-09/documents/technical_guidance_for_hazard_analysis.pdf
Toxicometric Parameters of Industrial Toxic Chemicals Under Single Exposure, Izmerov, N.F., et al., Moscow, Centre of International Projects, GKNT, 1982, -(80), 1982. Retrieved from: https://pubchem.ncbi.nlm.nih.gov/compound/Methacrylic-anhydride
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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.