Tetramethylthiourea
Also known as: 1,1,3,3-Tetramethyl-2-thiourea, 1,1,3,3-Tetramethylthiourea, N,N,N',N'-Tetramethylthiourea, TMTU, Basthioryl, NA-101, Tetramethyl-2-thiourea
Tetramethylthiourea (CAS 2782-91-4) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C5H12N2S and a molecular weight of 132.227 g/mol. Key properties include a melting point of 75-77 °C(lit.), a boiling point of 245.0±9.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 102.0±18.7 °C. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 2782-91-4
- Jingsj CID
- J-18683-4
- Molecular Formula
- C5H12N2S
- Molecular Weight
- 132.227 g/mol
- Category
- Organic Compounds
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 75-77 °C(lit.) |
|---|---|
| Boiling Point | 245.0±9.0 °C at 760 mmHg |
| Density | 1.0±0.1 g/cm3 |
| Flash Point | 102.0±18.7 °C |
| Exact Mass | 132.072113 |
| PSA | 38.57000 |
| LogP | 0.49 |
| Vapor Pressure | 0.0±0.5 mmHg at 25°C |
| Refractive Index | 1.524 |
| Additional Property | 32 g/L (20 ºC) |
GHS Safety & Compliance
- H302 — Harmful if swallowed
Customs & Trade Information
| HS Code | 2930909090 |
|---|---|
| Summary | 2930909090. other organo-sulphur compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of Tetramethylthiourea?
The CAS number of Tetramethylthiourea is 2782-91-4.
What are the molecular formula and molecular weight of Tetramethylthiourea?
Tetramethylthiourea has molecular formula C5H12N2S and molecular weight 132.227 g/mol.
Is Tetramethylthiourea hazardous?
Tetramethylthiourea has GHS signal word Warning and hazard statements H302 — Harmful if swallowed.
What are the upstream and downstream products of Tetramethylthiourea?
For Tetramethylthiourea, Upstream Products: Carbon disulphide, iodomethane, Tetramethylurea; Downstream Products: Carbonyl sulfide, Dimethylamine, Tetramethylurea.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Tetramethylthiourea (CAS 2782-91-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-18683-4 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.