Chlorpyrifos
Also known as: Chlorpyriphos, O,O-diethyl O-(3,5,6-trichloro-2-pyridinyl) phosphorothioate, O,O-diethyl O-3,5,6-trichloro-2-pyridyl phosphorothioate, Lorsban, Dursban, Brodan, Empire, Equity, Eradex, Pyrine, Zidil, suSCon
Chlorpyrifos (CAS 2921-88-2) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C9H11Cl3NO3PS and a molecular weight of 350.586 g/mol. Key properties include a melting point of 42-44°C, a boiling point of 375.9±52.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 181.1±30.7 °C. It is classified under GHS with signal word Danger and hazard statements H301 — Toxic if swallowed 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.
- 2921-88-2
- Jingsj CID
- J-29604-8
- Molecular Formula
- C9H11Cl3NO3PS
- Molecular Weight
- 350.586 g/mol
- Category
- Organic Compounds
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 42-44°C |
|---|---|
| Boiling Point | 375.9±52.0 °C at 760 mmHg |
| Density | 1.5±0.1 g/cm3 |
| Flash Point | 181.1±30.7 °C |
| Exact Mass | 348.926270 |
| PSA | 82.48000 |
| LogP | 4.77 |
| Vapor Pressure | 0.0±0.8 mmHg at 25°C |
| Refractive Index | 1.566 |
| Additional Property | Insoluble. 0.00013 g/100 mL |
GHS Safety & Compliance
- H301 — Toxic if swallowed
- H410 — Very toxic to aquatic life with long lasting effects
Customs & Trade Information
| HS Code | 2933399021 |
|---|---|
| Summary | 2933399021 (r)-2-(4-((5-(trifluoromethyl)pyridin-2-yl)oxy)phenoxy)propanoic acid。supervision conditions:s(import or export registration certificate for pesticides)。VAT:17.0%。tax rebate rate:9.0%。MFN tarrif:6.5%。general tariff:20.0% |
Frequently Asked Questions
What is the CAS number of Chlorpyrifos?
The CAS number of Chlorpyrifos is 2921-88-2.
What are the molecular formula and molecular weight of Chlorpyrifos?
Chlorpyrifos has molecular formula C9H11Cl3NO3PS and molecular weight 350.586 g/mol.
Is Chlorpyrifos hazardous?
Chlorpyrifos has GHS signal word Danger and hazard statements H301 — Toxic if swallowed; H410 — Very toxic to aquatic life with long lasting effects.
What are the upstream and downstream products of Chlorpyrifos?
For Chlorpyrifos, Upstream Products: 2,3,5,6-Tetrachloropyridine, Diethyl chlorothiophosphate; Downstream Products: Diethyl phosphite, 3,5,6-Trichloro-2-pyridinol, Chlorpyrifos-oxon.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Chlorpyrifos (CAS 2921-88-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-29604-8 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.