Dicyandiamide CAS No.461-58-5
Pharmaceutical Materials 2025-03-20
CAS No.461-58-5
Names and Identifiers
| Name | Dicyandiamide |
| Synonyms | DCD DCDA xb2879b Pyroset DO epicuredicy7 epicuredicy15 Dicyandiamide Dicyanodiamide Cyanoguanidine 2-Cyanoguanidine N-Cyanoguanidine 1-Cyanoguanidine Guanidine, cyano- Guanidine-1-carbonitrile diamino(cyanoiminio)methane |
| CAS | 461-58-5 |
| EINECS | 207-312-8 |
| InChI | InChI=1/C2H4N4/c3-1-6-2(4)5/h(H4,4,5,6)/p+1 |
| InChIKey | QGBSISYHAICWAH-UHFFFAOYSA-N |
Physico-chemical Properties
| Molecular Formula | C2H4N4 |
| Molar Mass | 84.08 |
| Density | 1.40 |
| Melting Point | 208-211 °C (lit.) |
| Boling Point | 144.35°C (rough estimate) |
| Flash Point | 92.8°C |
| Water Solubility | 32 g/L (20 ºC) |
| Solubility | Soluble in Water: 0.1 g/mL |
| Vapor Presure | 0.001Pa at 20℃ |
| Appearance | White powder |
| Color | White |
| Merck | 14,3092 |
| BRN | 605637 |
| pKa | 0.73±0.70(Predicted) |
| Storage Condition | 2-8°C |
| Stability | Stable. Incompatible with strong acids, strong oxidizing agents, strong bases. |
| Sensitive | Easily absorbing moisture |
| Refractive Index | 1.6260 (estimate) |
| MDL | MFCD00008066 |
| Physical and Chemical Properties | Properties White prismatic crystalline powder “[purpose] used as fertilizer, nitrocellulose stabilizer, rubber vulcanization accelerator, also used in the preparation of guanidine salt, melamine, barbituric acid and so on. “ |
| Use | Used as fertilizer, nitrocellulose stabilizer, rubber vulcanization accelerator, also used in the preparation of guanidine salt, melamine, barbituric acid, etc., is also the raw material of melamine and the intermediate of synthetic medicine, pesticide and dye |
Risk and Safety
| Risk Codes | R20/21/22 – Harmful by inhalation, in contact with skin and if swallowed. R43 – May cause sensitization by skin contact R36/38 – Irritating to eyes and skin. R25 – Toxic if swallowed |
| Safety Description | S22 – Do not breathe dust. S24/25 – Avoid contact with skin and eyes. S45 – In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S36 – Wear suitable protective clothing. S3 – Keep in a cool place. |
| UN IDs | UN 2811 6.1 / PGIII |
| WGK Germany | 1 |
| RTECS | ME9950000 |
| TSCA | Yes |
| HS Code | 29262000 |
| Toxicity | LD50 orally in Rabbit: > 5000 mg/kg LD50 dermal Rabbit > 2000 mg/kg |
Quality Indicators
| quality inspection items | item index value |
|---|---|
| melting point range/℃ | 207.0~211.0 |
| Content (C2H4N4) | ≥98.0% |
| water dissolution test | qualified |
| ignition residue (based on sulfate) | ≤0.05% |
