543-21-5
but-2-ynediamide
CAS: 543-21-5;102489-37-2;73663-83-9
Molecular Formula: C4H4N2O2
543-21-5 - Names and Identifiers
| Name | but-2-ynediamide |
| Synonyms | Lenamycin Renamycin Aquamycin 2-Butynediamide 2-BUTYNEDIAMIDE but-2-ynediamide ACETYLENEDICARBOXAMIDE Acetylendicarbonsaeureamid acetylenedicarboxylicaciddiamide Acetylenedicarboxylic acid diamide |
| CAS | 543-21-5 102489-37-2 73663-83-9 |
| EINECS | 684-490-7 |
| InChI | InChI=1/C4H4N2O2/c5-3(7)1-2-4(6)8/h(H2,5,7)(H2,6,8) |
543-21-5 - Physico-chemical Properties
| Molecular Formula | C4H4N2O2 |
| Molar Mass | 112.09 |
| Density | 1.4421 (rough estimate) |
| Melting Point | 179 °C |
| Boling Point | 209.98°C (rough estimate) |
| Flash Point | 131.6°C |
| Vapor Presure | 0.00167mmHg at 25°C |
| Appearance | Fine Crystalline Powder |
| Color | Cream to beige |
| pKa | 13.01±0.50(Predicted) |
| Refractive Index | 1.4610 (estimate) |
543-21-5 - Risk and Safety
| Hazard Symbols | T - Toxic |
| Risk Codes | R25 - Toxic if swallowed R21 - Harmful in contact with skin |
| Safety Description | S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S36/37 - Wear suitable protective clothing and gloves. S28A - |
| HS Code | 29241900 |
| Toxicity | LD50 i.v. in mice: 11 mg/kg (Suzuki) |
543-21-5 - Reference Information
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| category | pesticide |
| toxicity classification | highly toxic |
| acute toxicity | oral-mouse LD50: 89.2 mg/kg |
| flammability hazard characteristics | combustion produces toxic nitrogen oxide gas |
| storage and transportation characteristics | warehouse ventilation and low temperature drying; separate from food raw materials storage and transportation |
| fire extinguishing agent | dry powder, foam, sand |
Last Update：2024-04-09 21:48:26
