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CAS RN: 156-62-7 | Product Number: C0006

Calcium Cyanamide

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Product Number C0006
Molecular Formula / Molecular Weight CCaN__2 = 80.10  
Physical State (20 deg.C) Solid
Store Under Inert Gas Store under inert gas
Condition to Avoid Moisture Sensitive
CAS RN 156-62-7
Reaxys Registry Number 3912122
PubChem Substance ID 87565218
SDBS (AIST Spectral DB) 10626
Merck Index (14) 1662
MDL Number


Appearance Light gray to Brown to Black powder to crystal
Nitorogen of cyanamide min. 19.5 %
Properties (reference)
Pictogram Pictogram Pictogram Pictogram Pictogram Pictogram
Signal Word Danger
Hazard Statements 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 gases.
Precautionary Statements P273 : Avoid release to the environment.
P260 : Do not breathe dust/ fume/ gas/ mist/ vapours/ spray.
P231 + P232 : Handle and store contents under inert gas. Protect from moisture.
P280 : Wear protective gloves/ protective clothing/ eye protection/ face protection.
P370 + P378 : In case of fire: Use dry sand, dry chemical or alcohol-resistant foam to extinguish.
P391 : Collect spillage.
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.
Related Laws:
EC Number 205-861-8
RTECS# GS6000000
Transport Information:
UN Number UN1403
Class 4.3
Packing Group III
HS Number 3102900090
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.


  • Org. Synth. 1963, Coll. Vol. 4, 645.

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