PAC Database - Detailed Chemical Data
Chemical Identity
| Chemical | CAS# | UN# | Health Code Numbers | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Fenthion | 55-38-9 | 3018 |
6.00
4.01
11.01
15.02
4.08
4.05
7.01
8.00
7.00
11.00
|
|||||||||
| Formula | Synonyms | |||||||||||
| C10.H15.O3.P.S2 | FENTHION, B 29493, BAY 29493, BAYCID, BAYER 29493, BAYER 9007, BAYER S-1752, BAYTEX, DIMETHYL 4-METHYLTHIO-M-TOLYL PHOSPHOROTHIOATE, DMTP, ENT 25,540, ENT 25540, ENTEX, FENTHION-METHYL, LEBAYCID, M-CRESOL, 4-(METHYLTHIO)-, O-ESTER WITH O,O-DIMETHYL PHOSPHO, MERCAPTOFOS, MERCAPTOPHOS, MPP, MPP (PESTICIDE), NCI-C08651, O,O-DIMETHYL O-(3-METHYL-4-(METHYLTHIO) PHENYL) ESTER, PHOSP, O,O-DIMETHYL O-(3-METHYL-4-METHYLMERCAPTOPHENYL) PHOSPHOROTH, O,O-DIMETHYL O-(3-METHYL-4-METHYLTHIOPHENYL) THIOPHOSPHATE, O,O-DIMETHYL O-(4-METHYLTHIO-3-METHYLPHENYL) PHOSPHOROTHIOAT, O,O-DIMETHYL O-3-METHYL-4-METHYLTHIOPHENYL PHOSPHOROTHIOATE, O,O-DIMETHYL O-4-(METHYLMERCAPTO)-3-METHYLPHENYL PHOSPHOROTH, O,O-DIMETHYL O-4-(METHYLMERCAPTO)-3-METHYLPHENYL THIOPHOSPHA, O,O-DIMETHYL O-[3-METHYL-4-(METHYLTHIO)PHENYL] PHOSPHOROTHIO, O,O-DIMETHYL O-[4-(METHYLTHIO)-M-TOLYL] PHOSPHOROTHIOATE, O,O-DIMETHYL O-[4-(METHYLTHIO)-M-TOLYL] THIOPHOSPHATE, O,O-DIMETHYL-(O-(4-METHYLTHIO)-M-TOLYL)PHOSPHOROTHIOIC ACID, O,O-DIMETHYL-O-(4-(METHYLTHIO)-M-TOLYL)PHOSPHOROTHIOATE, O,O-DIMETHYL-O-3-METHYL-4-METHYLTHIOPHENYL PHOSPHOROTHIOATE, O,O-DIMETHYL-O-4-(METHYLMERCAPTO)-3-METHYLPHENYL PHOSPHOROTH, O,O-DIMETHYL-O-4-(METHYLMERCAPTO)-3-METHYLPHENYL THIOPHOSPHA, OMS 2, PHENTHION, PHOSPHOROTHIOIC ACID ((H3PO3S)), O,O-DIMETHYL O-4-(METHYLTHI, PHOSPHOROTHIOIC ACID, DIMETHYL [4-(METHYLTHIO)-M-TOLYL] ESTE, PHOSPHOROTHIOIC ACID, O,O-DIMETHYL O-[4-(METHYLTHIO)-M-TOLYL, QUELETOX, S 1752, SPOTTON, SULFIDOPHOS, TALODEX, TIGUVON | |||||||||||
Physical Properties
| Mol Wt | State | MP (°C) | BP (°C) | VP (Hg) | VP (°C) | SG | LEL (ppm) |
|---|---|---|---|---|---|---|---|
| 278.34 | L | 7 | 20 | 1.25 |
PAC Values
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.15 | 5.9 | 35 |
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.013 | 0.52 | 3.1 |
Technical Basis
A review of available sources identified exposure limits (TWAs) and acute toxicity data (LC50, LD50, LDLo, TDLo) for several species and routes. 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. Analysts selected the most preferred species and route toxicity data, a four-hour rat LC50, as the TEEL-3 basis and it was scaled to a 60-minute equivalent using the ten Berge equation (Section 3.3.4). The TEEL-2 value was derived according to Table 3.5. The TLV-TWA was selected as the TEEL-1 basis.
• TEEL-1 = TLV-TWA (0.05 mg/m3) x 3
• TEEL-2 = TEEL-3/6
• TEEL-3 = Rat LC50 (800 mg/m3/4H)
This review generated TEEL values consistent with Rev. 29A.
• TEEL-1 = TLV-TWA (0.05 mg/m3) x 3
• TEEL-2 = TEEL-3/6
• TEEL-3 = Rat LC50 (800 mg/m3/4H)
This review generated TEEL values consistent with Rev. 29A.
References
Chemical information: https://pubchem.ncbi.nlm.nih.gov/compound/Fenthion.
Rat LC50: Documentation of the Threshold Limit Values and Biological Exposure Indices," 5th ed., Cincinnati, OH, American Conference of Governmental Industrial Hygienists, Inc. 6,646,1991. Retrieved from: https://pubchem.ncbi.nlm.nih.gov/compound/Fenthion
Exposure limits: https://www.osha.gov/chemicaldata/405