PAC Database - Detailed Chemical Data
Chemical Identity
| Chemical | CAS# | UN# | Health Code Numbers | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Methyl phosphonic dichloride | 676-97-1 | 9206 |
14.01
11.01
14.02
11.00
7.01
4.11
|
|||||||||
| Formula | Synonyms | |||||||||||
| CH3Cl2OP | METHYL PHOSPHONIC DICHLORIDE, DICHLOROMETHYLPHOSPHINE OXIDE, DICHLORURE MÉTHYLPHOSPHONIQUE (DOT FRENCH), DICLORURO METILFOSFÓNICO (DOT SPANISH), METHANEPHOSPHONODICHLORIDIC ACID, METHANEPHOSPHONYL CHLORIDE, METHANEPHOSPHONYL DICHLORIDE, METHYLPHOSPHONIC ACID DICHLORIDE, METHYLPHOSPHONIC DICHLORIDE, METHYLPHOSPHONODICHLORIDIC ACID, METHYLPHOSPHONYL CHLORIDE, METHYLPHOSPHONYL DICHLORIDE, PHOSPHONIC DICHLORIDE, METHYL- | |||||||||||
Physical Properties
| Mol Wt | State | MP (°C) | BP (°C) | VP (Hg) | VP (°C) | SG | LEL (ppm) |
|---|---|---|---|---|---|---|---|
| 132.91 | S | 32 | 162 |
PAC Values
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.023 | 0.26 | 1.1 |
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.13 | 1.4 | 6.0 |
Technical Basis
A review of available sources identified rat LC50 acute toxicity data and LOC. Data sources were selected according to the hierarchy listed in Table 3.1. 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 LC50 was selected as the TEEL-3 basis and it was scale to 60-minute equivalent using the ten Berge equation (Section 3.3.4). The LOC was selected as a TEEL-2. TEEL-1 values were derived according to Table 3.5.
• TEEL-1 = TEEL-2/11
• TEEL-2 = LOC (0.0014 g/m3)
• TEEL-3 = Rat LC50 (26 ppm/4H)
This review generated TEEL values that are consistent with Rev. 29A.
• TEEL-1 = TEEL-2/11
• TEEL-2 = LOC (0.0014 g/m3)
• TEEL-3 = Rat LC50 (26 ppm/4H)
This review generated TEEL values that are consistent with Rev. 29A.
References
Chemical information: https://pubchem.ncbi.nlm.nih.gov/compound/Methylphosphonic-dichloride.
American Industrial Hygiene Association Journal., 25(470), 1964 [PMID:14209670] . Retrieved from: https://pubchem.ncbi.nlm.nih.gov/compound/Methylphosphonic-dichloride.
LOC; Appendix C, pg. C-6, https://www.epa.gov/sites/default/files/2015-09/documents/technical_guidance_for_hazard_analysis.pdf