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CAS RN: 156-62-7 | 产品编码: C0006
Calcium Cyanamide
技术规格
| Appearance | Light gray to Brown to Black powder to crystal |
| Nitorogen of cyanamide | min. 19.5 % |
物性（参考值）
GHS
| 象形图 |
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| 信号词 | Danger |
| 危险性说明 | H302 : Harmful if swallowed. H315 : Causes skin irritation. H318 : Causes serious eye damage. H371 : May cause damage to organs. H335 : May cause respiratory irritation. H411 : Toxic to aquatic life with long lasting effects. H261 : In contact with water releases flammable gas. |
| 防范说明 | P501 : Dispose of contents/ container to an approved waste disposal plant. P273 : Avoid release to the environment. P260 : Do not breathe dust/ fume/ gas/ mist/ vapors/ spray. P270 : Do not eat, drink or smoke when using this product. P231 + P232 : Handle under inert gas. Protect from moisture. P271 : Use only outdoors or in a well-ventilated area. P264 : Wash skin thoroughly after handling. P280 : Wear protective gloves/ eye protection/ face protection. P302 + P352 : IF ON SKIN: Wash with plenty of water. P370 + P378 : In case of fire: Use dry sand, dry chemical or alcohol-resistant foam to extinguish. P391 : Collect spillage. P308 + P311 : IF exposed or concerned: Call a POISON CENTER/doctor. P362 + P364 : Take off contaminated clothing and wash it before reuse. P332 + P313 : If skin irritation occurs: Get medical advice/ attention. P301 + P312 + P330 : IF SWALLOWED: Call a POISON CENTER/doctor if you feel unwell. Rinse mouth. P304 + P340 + P312 : IF INHALED: Remove person to fresh air and keep comfortable for breathing. Call a POISON CENTER/doctor if you feel unwell. P305 + P351 + P338 + P310 : IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a POISON CENTER/doctor. P403 + P233 : Store in a well-ventilated place. Keep container tightly closed. P402 + P404 : Store in a dry place. Store in a closed container. P405 : Store locked up. |
相关法规
| RTECS# | GS6000000 |
运输信息
| UN编号 | UN1403 |
| 类别 | 4.3 |
| 包装类别 | III |
| HS编码* | 3102.90-000 |
应用
Preparation of Cyanamide
Typical Procedure:Glacial acetic acid 57 g (54 mL, 0.75 mol) and water 135 mL are placed in a large sized agate mortar and white thoroughly stirring, calcium cyanamide 40 g (0.50 mol) is slowly added and the mixture is grounded. Acetylene gas is generated, yielding a dull grayish to dark colored paste. Subsequently, the paste is dried at 40~50 ℃ for 12~18 hours under reduced pressure 30 mmHg to yield a gray powder which is placed in a Soxhlet extractor. The powder is extracted with 400 mL of ether containing several drops of dilute acetic acid for 2~3 hours (2×). The ether extraction is dried over anhydrous sodium sulfate (30 g). Concentration under a reduced pressure gives 10.5~15.8 g (50~75% from CaCN2) colorless viscous oil.
References
- Org. Synth. 1963, Coll. Vol. 4, 645.
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