PAC Database - Detailed Chemical Data
Chemical Identity
| Chemical | CAS# | UN# | Health Code Numbers | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Diethyl ethylphosphonate | 78-38-6 |
15.01
11.01
15.02
7.01
8.00
4.09
|
||||||||||
| Formula | Synonyms | |||||||||||
| C6H15O3P | DIETHYL ETHYLPHOSPHONATE, AMGARD V 490, DIETHOXYETHYLPHOSPHINE OXIDE, DIETHYL ETHANEPHOSPHONATE, ETHANEPHOSPHONIC ACID DIETHYL ESTER, ETHYLDIETHOXYPHOSPHINE OXIDE | |||||||||||
Physical Properties
| Mol Wt | State | MP (°C) | BP (°C) | VP (Hg) | VP (°C) | SG | LEL (ppm) |
|---|---|---|---|---|---|---|---|
| 166.16 | L | 198 | 1.0259 @ 20°C |
PAC Values
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 7.0 | 77 | 460 |
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 1.0 | 11 | 68 |
Technical Basis
A review of available sources identified animal toxicity data. 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. A rat oral LD50 was selected as the TEEL-3 basis. 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 oral LD50 (2,330 mg/kg)
This review generated TEEL-3 values that are consistent with Rev. 29A. Current TEEL-2 values are less conservative than those in Rev. 29A due to a change in basis. The TDLo reference in Rev. 29A was not identified during current research. Instead the TEEL-2 was derived according to Table 3.5. TEEL-1 methodology is consistent between the current and Rev. 29A values, however the current TEEL-2 is less conservative, therefore the corresponding derivation is also less conservative.
• TEEL-1 = TEEL-2/11
• TEEL-2 = TEEL-3/6
• TEEL-3 = rat oral LD50 (2,330 mg/kg)
This review generated TEEL-3 values that are consistent with Rev. 29A. Current TEEL-2 values are less conservative than those in Rev. 29A due to a change in basis. The TDLo reference in Rev. 29A was not identified during current research. Instead the TEEL-2 was derived according to Table 3.5. TEEL-1 methodology is consistent between the current and Rev. 29A values, however the current TEEL-2 is less conservative, therefore the corresponding derivation is also less conservative.
References
National Center for Biotechnology Information (2023). PubChem Compound Summary for CID 6534, Diethyl ethylphosphonate. Retrieved from https://pubchem.ncbi.nlm.nih.gov/compound/Diethyl-ethylphosphonate.