Methidathion
Also known as: Supracide, Ultracide, DMTP, GS 13005, NC2964, OMS844, S-[(5-Methoxy-2-oxo-1,3,4-thiadiazol-3(2H)-yl)methyl] O,O-dimethyl phosphorodithioate, O,O-Dimethyl S-(2,3-dihydro-5-methoxy-2-oxo-1,3,4-thiadiazol-3-ylmethyl) phosphorodithioate, S-2,3-dihydro-5-methoxy-2-oxo-1,3,4-thiadiazol-3-ylmethyl O,O-dimethyl phosphorodithioate, Somonil, Faat, Hionate, Sphat
Methidathion (CAS 950-37-8) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C6H11N2O4PS3 and a molecular weight of 302.331 g/mol. Key properties include a melting point of 39-40°C, a boiling point of 347.7±52.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 164.1±30.7 °C. It is classified under GHS with signal word Danger and hazard statements H300, H310 and H330 — Fatal if inhaled. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 950-37-8
- Jingsj CID
- J-1409895-4
- Molecular Formula
- C6H11N2O4PS3
- Molecular Weight
- 302.331 g/mol
- Category
- Organic Compounds
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 39-40°C |
|---|---|
| Boiling Point | 347.7±52.0 °C at 760 mmHg |
| Density | 1.6±0.1 g/cm3 |
| Flash Point | 164.1±30.7 °C |
| Exact Mass | 301.961853 |
| PSA | 158.02000 |
| LogP | 2.03 |
| Vapor Pressure | 0.0±0.8 mmHg at 25°C |
| Refractive Index | 1.652 |
| Additional Property | 0.024 g/100 mL |
GHS Safety & Compliance
- H300
- H310
- H330 — Fatal if inhaled
- H318 — Causes serious eye damage
- H410 — Very toxic to aquatic life with long lasting effects
Frequently Asked Questions
What is the CAS number of Methidathion?
The CAS number of Methidathion is 950-37-8.
What are the molecular formula and molecular weight of Methidathion?
Methidathion has molecular formula C6H11N2O4PS3 and molecular weight 302.331 g/mol.
Is Methidathion hazardous?
Methidathion has GHS signal word Danger and hazard statements H300; H310; H330 — Fatal if inhaled.
What are the upstream and downstream products of Methidathion?
For Methidathion, Upstream Products: Formaldehyde, 5-methoxy-1,3,4-thiadiazol-2(3H)-one, Dimethylphosphorodithioate.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Methidathion (CAS 950-37-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1409895-4 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.