1-Phenyl-5-mercaptotetrazole
1-Phenyl-1H-tetrazole-5-thiol
CAS: 86-93-1
Molecular Formula: C7H6N4S
1-Phenyl-5-mercaptotetrazole - Names and Identifiers
1-Phenyl-5-mercaptotetrazole - Physico-chemical Properties
| Molecular Formula | C7H6N4S |
| Molar Mass | 178.21 |
| Density | 1.3046 (rough estimate) |
| Melting Point | 145°C (dec.)(lit.) |
| Boling Point | 342°C (rough estimate) |
| Flash Point | 138°C |
| Water Solubility | Soluble in 5% ethanol, water (partly), acetone, chloroform, and methanol. |
| Solubility | ethanol: soluble5%, clear, colorless to faintly yellow |
| Vapor Presure | 8.74E-05mmHg at 25°C |
| Appearance | Solid |
| Color | White to Off-White |
| BRN | 139068 |
| pKa | -3.85±0.20(Predicted) |
| PH | 3-5 (H2O, 20℃)suspension |
| Storage Condition | Store at +15°C to +25°C. |
| Sensitive | Air Sensitive |
| Refractive Index | 1.5500 (estimate) |
| Physical and Chemical Properties | White crystals. The melting point was 150 °c (decomposition). Soluble in ethanol, chloroform, carbon tetrachloride. |
| Use | As a stabilizer for photosensitive materials, pharmaceutical intermediates |
1-Phenyl-5-mercaptotetrazole - Risk and Safety
| Risk Codes | R5 - Heating may cause an explosion R22 - Harmful if swallowed R2017/5/22 - |
| Safety Description | S22 - Do not breathe dust. S24/25 - Avoid contact with skin and eyes. |
| UN IDs | UN 1325 4.1/PG 2 |
| WGK Germany | 1 |
| RTECS | XF7700000 |
| FLUKA BRAND F CODES | 4.10 |
| TSCA | Yes |
| HS Code | 29339990 |
| Hazard Note | Flammable |
| Hazard Class | 4.1 |
| Packing Group | III |
1-Phenyl-5-mercaptotetrazole - Upstream Downstream Industry
| Downstream Products | cefazolin sodium salt Cefoperazone |
1-Phenyl-5-mercaptotetrazole - 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 | This product is a photographic anti-ash agent, and is also used as an intermediate of reagents and anthelmintic drugs. 1. This product is a photographic anti-ash agent, and is also used as an intermediate of reagents and anthelmintics. 2. It is used as a stabilizer of photosensitive materials and a pharmaceutical intermediate. |
| production method | is obtained by reacting phenyl isothiocyanate with sodium azide. 150ml of water, 67.5G of phenyl isothiocyanate and 9.8g of sodium azide were mixed with stirring and refluxed until clear for about 5-6H. Upon cooling, the 1-phenyltetrazole-5-thiol sodium salt was filtered (sodium salt [15052-19-4]). The sodium salt (filtrate) was acidified to Ph 2 with hydrochloric acid to precipitate a white solid. The crystals were filtered, washed with water, and dried to obtain a crude product. The product was recrystallized from dilute ethanol, and the yield was above 90%. |
Last Update：2024-04-09 02:00:04
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Downstream Products for 1-Phenyl-5-mercaptotetrazole