39968-33-7
1-Hydroxy-7-azabenzotriazole
CAS: 39968-33-7
Molecular Formula: C5H4N4O
39968-33-7 - Names and Identifiers
| Name | 1-Hydroxy-7-azabenzotriazole |
| Synonyms | HOAT 1-Hydroxy-7-azabenzo N-Hydroxy-7-azobenzotriazole 1-Hydroxy-7-azabenzotriazole 7-AZA-1-HYDROXYBENZOTRIAZOLE N-Hydroxy-7-azabenzotriazole 3H-[1,2,3]-Triazolo[4,5-b]pyridin-3-ol 3H-[1,2,3]-TRIAZOLO[4,5-B]PYRIDIN-3-OL 3H-1,2,3-TRIAZOLO[4,5-B]PYRIDINE, 3-HYDROXY- 7-Aza-1-hydroxybenzotriazoleHOAt1-Hydroxy-7-azabenzotriazole |
| CAS | 39968-33-7 |
| EINECS | 609-760-3 |
| InChI | InChI=1/C5H4N4O/c10-9-5-4(7-8-9)2-1-3-6-5/h1-3,10H |
39968-33-7 - Physico-chemical Properties
| Molecular Formula | C5H4N4O |
| Molar Mass | 136.11 |
| Density | 0.973g/mLat 20°C |
| Melting Point | 213-216°C |
| Boling Point | 250.36°C (rough estimate) |
| Flash Point | 213-216°C |
| Vapor Presure | 3.25E-06mmHg at 25°C |
| Appearance | Crystalline powder |
| pKa | 5.85±0.58(Predicted) |
| Storage Condition | Store at RT. |
| Refractive Index | n20/D 1.441 |
| MDL | MFCD00210053 |
| Use | The production of racemization is inhibited in polypeptide condensation and is also used for fragment condensation. |
39968-33-7 - Risk and Safety
| Risk Codes | R61 - May cause harm to the unborn child R20/21 - Harmful by inhalation and in contact with skin. R36 - Irritating to the eyes R5 - Heating may cause an explosion R36/37/38 - Irritating to eyes, respiratory system and skin. R11 - Highly Flammable R41 - Risk of serious damage to eyes R37/38 - Irritating to respiratory system and skin. R22 - Harmful if swallowed R2 - Risk of explosion by shock, friction, fire or other sources of ignition R36/37 - Irritating to eyes and respiratory system. |
| 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.) S37/39 - Wear suitable gloves and eye/face protection S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S16 - Keep away from sources of ignition. S39 - Wear eye / face protection. S35 - This material and its container must be disposed of in a safe way. S36 - Wear suitable protective clothing. S36/37 - Wear suitable protective clothing and gloves. S28 - After contact with skin, wash immediately with plenty of soap-suds. S15 - Keep away from heat. |
| UN IDs | UN 1993 3/PG 3 |
| WGK Germany | 1 |
| HS Code | 29332990 |
| Hazard Class | IRRITANT |
| Packing Group | Ⅱ |
39968-33-7 - Reference Information
| Decomposition | 213-216 ºC |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| use | inhibition of racemization in polypeptide condensation; also used for fragment condensation |
Last Update：2024-04-10 22:29:15
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