NSC 3825
2-methylbenzothiazole
CAS: 120-75-2
Molecular Formula: C8H7NS
NSC 3825 - Names and Identifiers
| Name | 2-methylbenzothiazole |
| Synonyms | NSC 3825 CCRIS 8096 BRN 0112427 usafek-1853 USAF EK-1853 USAF ek-1853 2-Methylbenzothiazo 2-Methybenzothiazole 2-methylbenzothiazol 2-methyl-benzothiazol 2-Methylbenzothiazole 2-methylbenzothiazole Benzothiazole,2-methyl- Benzothiazole, 2-methyl- 2-Methyl-1,3-benzothiazole 2-methyl-1,3-benzothiazole 4-27-00-01080 (Beilstein Handbook Reference) |
| CAS | 120-75-2 |
| EINECS | 204-423-3 |
| InChI | InChI=1/C8H7NS/c1-6-9-7-4-2-3-5-8(7)10-6/h2-5H,1H3 |
NSC 3825 - Physico-chemical Properties
| Molecular Formula | C8H7NS |
| Molar Mass | 149.21 |
| Density | 1.173 g/mL at 25 °C (lit.) |
| Melting Point | 11-14 °C (lit.) |
| Boling Point | 238 °C (lit.) |
| Flash Point | 216°F |
| Water Solubility | Not miscible or difficult to mix with water. |
| Solubility | DMSO (Sparingly), Methanol (Slightly) |
| Vapor Presure | 0.0669mmHg at 25°C |
| Appearance | Liquid |
| Color | slightly yellow |
| BRN | 112427 |
| pKa | 1.65±0.10(Predicted) |
| Storage Condition | Inert atmosphere,Room Temperature |
| Refractive Index | n20/D 1.617(lit.) |
| Physical and Chemical Properties | Colorless oily liquid. Melting Point 14 ℃. Boiling point 238 °c, 150-151 °c (2.0kPa). The relative density was 1.173. Refractive index 1.6170. Flash point 102 °c. Soluble in ethanol and hydrochloric acid, insoluble in water, pyridine odor. |
| Use | Used as a reagent for the determination of bismuth and antimony |
NSC 3825 - Risk and Safety
| Hazard Symbols | Xn - Harmful |
| Risk Codes | R36/37/38 - Irritating to eyes, respiratory system and skin. R20/21/22 - Harmful by inhalation, in contact with skin and if swallowed. |
| Safety Description | S23 - Do not breathe vapour. S24/25 - Avoid contact with skin and eyes. |
| WGK Germany | 3 |
| RTECS | DL5600000 |
| TSCA | Yes |
| HS Code | 29342080 |
NSC 3825 - Reference Information
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Use | the product reacts with sodium potassium iodide to form red or orange-red precipitate, and generates yellow precipitate with antimony, it is used as a reagent for the determination of bismuth and antimony in chemical analysis. The product is toxic, can make the skin allergic reaction. |
| production method | obtained by cyclization of thioacetanilide. To a 6% solution of thioacetanilide in sodium hydroxide, a pre-cooled 20% potassium ferricyanide solution was added dropwise under cooling. Then, compressed air was passed to the mixed liquid for 2H, and the mixture was allowed to stand for 24h. The precipitated oil was extracted with diethyl ether, the extract was dried and then the diethyl ether was distilled off, and the remainder was distilled under reduced pressure to obtain an oily product. The yield was 30%. |
Last Update：2024-04-09 02:00:04
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