Prothiofos
Also known as: O-(2,4-Dichlorophenyl) O-ethyl S-propyl phosphorodithioate, Phosphorodithioic acid, O-(2,4-dichlorophenyl) O-ethyl S-propyl ester, Tokuthion, Toyodan, Toyothion, BAY ntn 8629, Bideron, Dichlorpropaphos, NTN 8629, Prothiophos, O-ethyl O-(2,4-dichlorophenyl) S-propyl dithiophosphate, (RS)-[O-(2,4-dichlorophenyl) O-ethyl S-propyl phosphorodithioate]
Prothiofos (CAS 34643-46-4) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C11H15Cl2O2PS2 and a molecular weight of 345.245 g/mol. Key properties include a boiling point of 397.8±52.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 194.4±30.7 °C. It is classified under GHS with signal word Danger and hazard statements H302 — Harmful if swallowed, H330 — Fatal if inhaled and H410 — Very toxic to aquatic life with long lasting effects. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 34643-46-4
- Jingsj CID
- J-11103-5
- Molecular Formula
- C11H15Cl2O2PS2
- Molecular Weight
- 345.245 g/mol
- Category
- Organic Compounds
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 397.8±52.0 °C at 760 mmHg |
|---|---|
| Density | 1.4±0.1 g/cm3 |
| Flash Point | 194.4±30.7 °C |
| Exact Mass | 343.962799 |
| PSA | 85.66000 |
| LogP | 5.53 |
| Vapor Pressure | 0.0±0.9 mmHg at 25°C |
| Refractive Index | 1.580 |
GHS Safety & Compliance
- H302 — Harmful if swallowed
- H330 — Fatal if inhaled
- H410 — Very toxic to aquatic life with long lasting effects
Customs & Trade Information
| HS Code | 2930909062 |
|---|---|
| Summary | 2930909062 s-((tert-butylthio)methyl) o,o-diethyl phosphorodithioate |
Frequently Asked Questions
What is the CAS number of Prothiofos?
The CAS number of Prothiofos is 34643-46-4.
What are the molecular formula and molecular weight of Prothiofos?
Prothiofos has molecular formula C11H15Cl2O2PS2 and molecular weight 345.245 g/mol.
Is Prothiofos hazardous?
Prothiofos has GHS signal word Danger and hazard statements H302 — Harmful if swallowed; H330 — Fatal if inhaled; H410 — Very toxic to aquatic life with long lasting effects.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Prothiofos (CAS 34643-46-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-11103-5 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.