CH3CSNH2
Thioacetamide
CAS: 62-55-5
Molecular Formula: C2H5NS
CH3CSNH2 - Names and Identifiers
| Name | Thioacetamide |
| Synonyms | CH3CSNH2 Thiacetamide Thioacetamide Acetothioamide Ethanethioamide Acetamide, thio- THIOACETAMIDE TS rcrawastenumberu218 Acetimidic acid, thio- Rcra waste number U218 |
| CAS | 62-55-5 |
| EINECS | 200-541-4 |
| InChI | InChI=1/C2H5NS/c1-2(3)4/h1H3,(H2,3,4) |
| InChIKey | YUKQRDCYNOVPGJ-UHFFFAOYSA-N |
CH3CSNH2 - Physico-chemical Properties
| Molecular Formula | C2H5NS |
| Molar Mass | 75.13 |
| Density | 1.37 |
| Melting Point | 108-112 °C (lit.) |
| Boling Point | 111.7±23.0 °C(Predicted) |
| Flash Point | 21.4°C |
| Water Solubility | 16.3 g/100 mL (25 ºC) |
| Solubility | passes test2% |
| Vapor Presure | 22.5mmHg at 25°C |
| Appearance | White crystal |
| Color | Off-white to slightly beige |
| Merck | 14,9319 |
| BRN | 506006 |
| pKa | 13.25±0.29(Predicted) |
| PH | 5.2 (100g/l, H2O, 20℃) |
| Storage Condition | Inert atmosphere,Room Temperature |
| Stability | Stability Incompatible with water, mineral acids. |
| Sensitive | Easily absorbing moisture |
| Refractive Index | 1.5300 (estimate) |
| MDL | MFCD00008070 |
| Physical and Chemical Properties | Colorless or white crystals. Melting point 113-114 ° C, 25 ° C water solubility of 16.3g/100ml, ethanol 26.4g/100ml. Very slightly soluble in benzene, ether. The aqueous solution is quite stable at room temperature or 50 ° C. To 60 ° C., but when hydrogen ions are present, Thio hydrogen is rapidly generated and decomposed. New products sometimes have thiol odor, micro moisture absorption. |
| Use | Used as a curing agent and cross-linking agent for polymers, rubber additives, pharmaceutical raw materials, etc |
CH3CSNH2 - Risk and Safety
| Hazard Symbols | T - Toxic |
| Risk Codes | R45 - May cause cancer R22 - Harmful if swallowed R36/38 - Irritating to eyes and skin. R52/53 - Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment. |
| Safety Description | S53 - Avoid exposure - obtain special instructions before use. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. S99 - |
| UN IDs | 2811 |
| WGK Germany | 3 |
| RTECS | AC8925000 |
| FLUKA BRAND F CODES | 10 |
| TSCA | Yes |
| HS Code | 29309070 |
| Toxicity | MLD orally in rats: 200 mg/kg (Ambrose) |
CH3CSNH2 - Reference
| Reference Show more | 1. Du, Cuicui, et al. "In situ engineering MoS2 NDs/VS2 lamellar heterostructure for enhanced electrocatalytic hydrogen evolution." ACS Sustainable Chemistry & Engineering 6.11 (2018): 15471-15479.https://doi.org/10.1021/acssuschemeng.8b03929 2. [IF=8.198] Cuicui Du et al."In Situ Engineering MoS2 NDs/VS2 Lamellar Heterostructure for Enhanced Electrocatalytic Hydrogen Evolution."Acs Sustain Chem Eng. 2018;6(11):15471–15479 |
CH3CSNH2 - Introduction
There is a slight mercaptan odor. Micro moisture absorption. Solubility in water at 25 ℃: 16.3g/100ml, solubility in ethanol: 26.4g/100ml, slightly soluble in ether. The aqueous solution is quite stable at or 50~60°C, but when there are hydrogen ions, it quickly decomposes to produce hydrogen sulfide. The maximum absorption wavelength (in water) is 210, 261, 318nm(logε3 · 66, 4.08, 1.8). Toxic, minimum lethal dose (rat, oral) 200mg/kg. Tests have shown that it has potential carcinogenic effects on experimental animals. Stimulant
Last Update：2022-10-16 17:27:15
CH3CSNH2 - Reference Information
| pH range of acid-base indicator discoloration | 5.2 |
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| (IARC) carcinogen classification | 2B (Vol. 7, Sup 7) 1987 |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| organic reagent | thioacetamide, also known as ethyl thiamide, is an organic reagent, colorless or white flake crystal. Soluble in water, ethanol, very slightly soluble in benzene, ether, its aqueous solution at room temperature or 50~60 ° C is quite stable, placed for 2~3 weeks, but when there are hydrogen ions, hydrogen sulfide is quickly generated to decompose, but the hydrolysis is accelerated as the acidity or alkalinity of the solution increases and the temperature increases. The hydrolysis reaction equation of thioacetamide in acidic and alkaline solutions is: in acidic solution: CH3CSNH2 2H2O ----(NH4 ) CH3COO- H2S In alkaline solution: CH3CSNH2 2oh-nh3 CH3COO- HS- due to the hydrolysis of H2S or HS-in acidic or alkaline solution, it is often used to replace the toxic and odorous H2S in analytical chemistry, as a component reagent or precipitation reagent for metal cations. The precipitate obtained has good properties and is easy to separate. In addition, it can also be used as an assay reagent for bismuth. Preparation Method: by acetamide and aluminum sulfide heating, acetonitrile and hydrogen sulfide reaction, or acetamide and K3PS4 reaction. |
| Use | used in the production of catalysts, stabilizers, polymerization inhibitors, electroplating additives, photographic drugs, pesticides, dyeing auxiliaries and mineral dressing agents. It is also used as a curing agent, a cross-linking agent, a rubber aid and a pharmaceutical raw material for polymers. used as vulcanizing agent and crosslinking agent of polymer, rubber auxiliary agent, pharmaceutical raw material, etc. used as analytical reagent used for decomposing amino acid copper complex; Used for verification of bismuth; an additive for asymmetric reduction of β-ketoesters with immobilized yeast was used to decompose amino acid copper complexes. It is also used as a curing agent, a cross-linking agent, a rubber aid and a pharmaceutical raw material for polymers. Hepatotoxins and carcinogens for the isomeric selective reduction of β-keto esters. |
| production method | thioacetamide can be obtained by reacting acetonitrile with hydrogen sulfide or acetamide with phosphorus pentasulfide. |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-09 21:01:54
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