Malathion
Also known as: O,O-Dimethyl S-(1,2-dicarbethoxyethyl) phosphorodithioate, Diethyl 2-(dimethoxyphosphinothioylthio)succinate, Diethyl 2-[(dimethoxyphosphorothioyl)sulfanyl]succinate, O,O-Dimethyl dithiophosphate of diethyl mercaptosuccinate, S-1,2-bis(ethoxycarbonyl)ethyl O,O-dimethyl phosphorodithioate, American Cyanamid 4049, carbophos, maldison, mercoptothion, Derbac-M, Etiol, Fog 3, Organoderm, Suleo-M, SF 60, flair, 8059HC
Malathion (CAS 121-75-5) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C10H19O6PS2 and a molecular weight of 330.358 g/mol. Key properties include a melting point of 2.85°C, a boiling point of 385.1±52.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 186.7±30.7 °C. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed, H317 — May cause an allergic skin reaction 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.
- 121-75-5
- Jingsj CID
- J-2922-1
- Molecular Formula
- C10H19O6PS2
- Molecular Weight
- 330.358 g/mol
- Category
- Organic Compounds
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 2.85°C |
|---|---|
| Boiling Point | 385.1±52.0 °C at 760 mmHg |
| Density | 1.3±0.1 g/cm3 |
| Flash Point | 186.7±30.7 °C |
| Exact Mass | 330.036072 |
| PSA | 138.26000 |
| LogP | 2.92 |
| Vapor Pressure | 0.0±0.9 mmHg at 25°C |
| Refractive Index | 1.509 |
| Additional Property | 0.0145 g/100 mL |
GHS Safety & Compliance
- H302 — Harmful if swallowed
- H317 — May cause an allergic skin reaction
- H410 — Very toxic to aquatic life with long lasting effects
Customs & Trade Information
| HS Code | 2930909061 |
|---|---|
| Summary | 2930909061 o,o,o',o'-tetramethyl o,o'-(thiobis(4,1-phenylene)) diphosphorothioate。supervision conditions:s(import or export registration certificate for pesticides)。VAT:17.0%。tax rebate rate:9.0%。MFN tarrif:6.5%。general tariff:30.0% |
Frequently Asked Questions
What is the CAS number of Malathion?
The CAS number of Malathion is 121-75-5.
What are the molecular formula and molecular weight of Malathion?
Malathion has molecular formula C10H19O6PS2 and molecular weight 330.358 g/mol.
Is Malathion hazardous?
Malathion has GHS signal word Warning and hazard statements H302 — Harmful if swallowed; H317 — May cause an allergic skin reaction; H410 — Very toxic to aquatic life with long lasting effects.
What are the upstream and downstream products of Malathion?
For Malathion, Upstream Products: Dimethylphosphorodithioate, Diethyl maleate, Methanol; Downstream Products: Ethanol, Disodium fumarate, Diethyl malate.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Malathion (CAS 121-75-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-2922-1 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.