Tetramethylthiourea
- CAS No.
- 2782-91-4
- Chemical Name:
- Tetramethylthiourea
- Synonyms
- TBU;TMTU;1,1,3,3-TETRAMETHYLTHIOUREA;NA-101;Basthioryl;((CH3)2N)2CS;cas no.2782-91-4;Tetrabutylurea,TBU;TETRAMETHYLTHIOUREA;tetramethyl-thioure
- CBNumber:
- CB1210437
- Molecular Formula:
- C5H12N2S
- Molecular Weight:
- 132.23
- MDL Number:
- MFCD00008324
- MOL File:
- 2782-91-4.mol
- MSDS File:
- SDS
- TDS File:
- TDS
| Melting point | 75-77 °C (lit.) |
|---|---|
| Boiling point | 245 °C (lit.) |
| Density | 1.005 (estimate) |
| refractive index | 1.5300 (estimate) |
| Flash point | 190 °C |
| storage temp. | 2-8°C |
| solubility | 32g/l |
| form | solid |
| pka | 1.50±0.50(Predicted) |
| color | Off-White to Pale Beige |
| Water Solubility | 32 g/L (20 ºC) |
| BRN | 1744916 |
| Henry's Law Constant | 8.5×102 mol/(m3Pa) at 25℃, HSDB (2015) |
| InChI | 1S/C5H12N2S/c1-6(2)5(8)7(3)4/h1-4H3 |
| InChIKey | MNOILHPDHOHILI-UHFFFAOYSA-N |
| SMILES | CN(C)C(=S)N(C)C |
| CAS DataBase Reference | 2782-91-4(CAS DataBase Reference) |
| EWG's Food Scores | 1 |
| FDA UNII | J6T67A1P72 |
| NIST Chemistry Reference | Thiourea, tetramethyl-(2782-91-4) |
| EPA Substance Registry System | Tetramethylthiourea (2782-91-4) |
| UNSPSC Code | 12352100 |
| NACRES | NA.22 |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS07 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Warning | |||||||||
| Hazard statements | H302 | |||||||||
| Precautionary statements | P301+P312+P330 | |||||||||
| PPE | dust mask type N95 (US), Eyeshields, Gloves | |||||||||
| Hazard Codes | Xn | |||||||||
| Risk Statements | 22-20/21/22 | |||||||||
| Safety Statements | 22-24/25-36 | |||||||||
| WGK Germany | 3 | |||||||||
| RTECS | YU2750000 | |||||||||
| TSCA | TSCA listed | |||||||||
| HS Code | 29309070 | |||||||||
| Storage Class | 11 - Combustible Solids | |||||||||
| Hazard Classifications | Acute Tox. 4 Oral | |||||||||
| Hazardous Substances Data | 2782-91-4(Hazardous Substances Data) | |||||||||
| NFPA 704 |
|
Tetramethylthiourea price More Price(53)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | 115169 | Tetramethylthiourea 98% | 2782-91-4 | 25g | $103 | 2026-04-30 | Buy |
| TCI Chemical | T0156 | Tetramethylthiourea >98.0%(N) | 2782-91-4 | 25g | $55 | 2026-04-30 | Buy |
| TCI Chemical | T0156 | Tetramethylthiourea >98.0%(N) | 2782-91-4 | 100g | $165 | 2026-04-30 | Buy |
| Usbiological | 290710 | 1,1,3,3-Tetramethyl-2-thiourea Asreported | 2782-91-4 | 25g | $362 | 2026-06-03 | Buy |
| Usbiological | 290710 | 1,1,3,3-Tetramethyl-2-thiourea Asreported | 2782-91-4 | 50g | $501 | 2026-06-03 | Buy |
Tetramethylthiourea Chemical Properties, Uses, Production
Chemical Properties
COLORLESS TO YELLOW CRYSTALLINE CHUNKS
Uses
As a drug.
Uses
Tetramethylthiourea forms BF3 adduct with tetramethylselenourea.
Definition
ChEBI: Tetramethylthiourea is a member of thioureas.
General Description
White crystals.
Air & Water Reactions
Water soluble.
Reactivity Profile
An organosulfide amide. Organosulfides are incompatible with acids, diazo and azo compounds, halocarbons, isocyanates, aldehydes, alkali metals, nitrides, hydrides, and other strong reducing agents. Reactions with these materials generate heat and in many cases hydrogen gas. Many of these compounds may liberate hydrogen sulfide upon decomposition or reaction with an acid. Organic amides/imides react with azo and diazo compounds to generate toxic gases. Flammable gases are formed by the reaction of organic amides/imides with strong reducing agents. Amides are very weak bases (weaker than water). Imides are less basic yet and in fact react with strong bases to form salts. That is, they can react as acids. Mixing amides with dehydrating agents such as P2O5 or SOCl2 generates the corresponding nitrile. The combustion of these compounds generates mixed oxides of nitrogen (NOx).
Hazard
Moderately toxic by ingestion.
Fire Hazard
Flash point data for Tetramethylthiourea are not available, but Tetramethylthiourea is probably combustible.
Safety Profile
Moderately toxic by ingestion. Questionable carcinogen with experimental carcinogenic and teratogenic data. Human mutation data reported. When heated to decomposition it emits very toxic fumes of NOx and SOx. See also SULFIDES.
Tetramethylthiourea Preparation Products And Raw materials
Raw materials
Preparation Products
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Wuhan penglei Biotechnology Co., Ltd | 13554168242 | 445014292@qq.com | China | 281 | 58 |
| Jingmen Dongxin Biotechnology Co., Ltd | 86-15572493761 13047189721 | 359972849@qq.com | China | 215 | 58 |
| J & K SCIENTIFIC LTD. | 18210857532 18210857532 | jkinfo@jkchemical.com | China | 96815 | 76 |
| Meryer (Shanghai) Chemical Technology Co., Ltd. | 4006356688 18621169109 | market03@meryer.com | China | 40202 | 62 |
| INTATRADE GmbH | +49 3493/605464 | sales@intatrade.de | Germany | 3563 | 66 |
| 3B Pharmachem (Wuhan) International Co.,Ltd. | 18930552037 | 3bsc@sina.com | China | 15813 | 69 |
| Alfa Aesar | 400-6106006 | saleschina@alfa-asia.com | China | 30103 | 84 |
| TCI (Shanghai) Development Co., Ltd. | 021-67121386 | Sales-CN@TCIchemicals.com | China | 24512 | 81 |
| Beijing HwrkChemical Technology Co., Ltd | 89508211 18501085097 | sales.bj@hwrkchemical.com | China | 9407 | 55 |
| Energy Chemical | 400-0056266 | sales8178@energy-chemical.com | China | 44850 | 61 |
View Latest Price from Tetramethylthiourea manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2026-09-17 | Tetra methyl Thiourea
2782-91-4
|
$20.00 | 1KG | 99% | 200 tons/ year | Speranza Chemical Co., Ltd. | |
 |
2026-03-20 | Tetramethylthiourea
2782-91-4
|
$10.00 | 1KG | 99% | 5tons | Hebei Chuanghai Biotechnology Co., Ltd | |
 |
2025-06-27 | Tetramethylthiourea
2782-91-4
|
1KG | 99% | 500000kg | Hebei Chuanghai Biotechnology Co., Ltd |
-
- Tetra methyl Thiourea
2782-91-4
- $20.00
- 99%
- Speranza Chemical Co., Ltd.
-
- Tetramethylthiourea
2782-91-4
- $10.00
- 99%
- Hebei Chuanghai Biotechnology Co., Ltd
-
- Tetramethylthiourea
2782-91-4
- 99%
- Hebei Chuanghai Biotechnology Co., Ltd
