Basic information
- Name:
Cyanamide
- CAS No.:
420-04-2
- Molecular Structure:
- Formula:
- CH2N2
- Molecular Weight:
- 42.05
- Deleted CAS:
- 65931-45-5|32729-71-8
- Synonyms:
- Alzogur;Amidocyanogen;Carbamonitrile;Carbimide;Cyanoamine;Cyanogen nitride;Cyanogenamide;Deurbraak;Dormex;Hydrogen cyanamide;N-Cyanoamine;NSC 24133;TsAKS;
- EINECS:
- 206-992-3
- Density:
- 0.998 g/cm3
- Melting Point:
- 45-46 °C(lit.)
- Boiling Point:
- 258.5 °C at 760 mmHg
- Flash Point:
- 1.2 °C
- Solubility:
- 775 g/L in water
- Appearance:
- white crystalline solid
- Hazard Symbols:
- Risk Codes:
- 21-25-36/38-43
- Safety Description:
- 3-22-36/37-45 Details
- Transport Information:
- UN 2811 6.1/PG 3
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Chemistry
The Molecular Structure of Cyanamide (CAS NO.420-04-2):
Empirical Formula: CH2N2
Molecular Weight: 42.04
IUPAC Name: cyanamide
Appearance: white crystalline solid
Nominal Mass: 42 Da
Average Mass: 42.04 Da
Monoisotopic Mass: 42.021798 Da
Index of Refraction: 1.396
Molar Refractivity: 10.13 cm3
Molar Volume: 42.1 cm3
Surface Tension: 45.3 dyne/cm
Density: 0.998 g/cm3
Flash Point: 1.2 °C
Enthalpy of Vaporization: 49.61 kJ/mol
Boiling Point: 258.5 °C at 760 mmHg
Vapour Pressure: 0.0137 mmHg at 25°C
Storage temp: 2-8°C
Water Solubility: 775 g/L
Sensitive: Hygroscopic
Product Categories: Pharmaceutical Intermediates;Inorganics;C1 to C5;Cyanides/Nitriles;Nitrogen Compounds
Stability: Unstable - heat sensitive. Incompatible with strong oxidizing agents, strong reducing agents, bases, acids, iron and its salts, steel, brass, lead, moisture. Reacts with acids to produce very toxic gas
InChI
InChI=1/CH2N2/c2-1-3/h2H2
Smiles
C(N)#N
Synonyms: MeSH Heading ; Cyanamide [JAN] ; 4-03-00-00145 (Beilstein Handbook Reference) ; Alzogur ; Amidocyanogen ; BRN 1732569 ; Carbamonitrile ; Carbimide ; Caswell No. 485A ; Cyanoamine ; Cyanogen nitride ; Cyanogenamide ; Deurbraak ; Dormex ; EINECS 206-992-3 ; EPA Pesticide Chemical Code 014002 ; HSDB 1550 ; Hydrogen cyanamide ; N-Cyanoamine ; UNII-21CP7826LC
Uses
Cyanamide (CAS NO.420-04-2) is used as industrial raw materials, pharmaceutical, pesticide intermediates, agricultural fertilizers, plant regulators and food additives, etc.
Production
Cyanamide (420-04-2) is produced by hydrolysis of calcium cyanamide, which in turn is prepared from calcium carbide via the Frank-Caro process. The main reaction exhibited by cyanamide involves additions of protic reagents. Water, hydrogen sulfide , and hydrogen selenide add to give urea, thiourea, and selenourea, respectively.
Toxicity Data With Reference
| 1. | orl-rat LD50:125 mg/kg | MEIEDD Merck Index. 10 (1983),383. | ||
| 2. | ihl-rat LCLo:86 mg/m3/4H | 85GMAT Toxicometric Parameters of Industrial Toxic Chemicals Under Single Exposure Izmerov, N.F., et al.,Moscow, USSR.: Centre of International Projects, GKNT,1982,40. | ||
| 3. | skn-rat LD50:84 mg/kg | 85GMAT Toxicometric Parameters of Industrial Toxic Chemicals Under Single Exposure Izmerov, N.F., et al.,Moscow, USSR.: Centre of International Projects, GKNT,1982,40. | ||
| 4. | ipr-rat LDLo:200 mg/kg | PSEBAA Proceedings of the Society for Experimental Biology and Medicine. 54 (1943),254. | ||
| 5. | ipr-mus LD50:200 mg/kg | NTIS** National Technical Information Service. (Springfield, VA 22161) (Formerly U.S. Clearinghouse for Scientific and Technical Information) AD277-689 . | ||
| 6. | skn-rbt LD50:590 mg/kg | 34ZIAG Toxicology of Drugs and Chemicals ,Deichmann, W.B.,New York, NY.: Academic Press, Inc.,1969,190. |
Consensus Reports
Cyanamide (420-04-2) is reported in EPA TSCA Inventory. Cyanide and its compounds are on the Community Right-To-Know List.
Safety Profile
Hazard Codes: 
T
Risk Statements: 21-25-36/38-43
R21: Harmful in contact with skin.
R25: Toxic if swallowed.
R36/38: Irritating to eyes and skin.
R43: May cause sensitization by skin contact.
Safety Statements: 3-22-36/37-45
S3: Keep in a cool place.
S22: Do not breathe dust.
S36/37: Wear suitable protective clothing and gloves.
S45: In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)
RIDADR: UN 2811 6.1/PG 3
WGK Germany: 2
RTECS: GS5950000
HazardClass: 8
PackingGroup: III
Poison by ingestion, inhalation, and intraperitoneal routes. Moderately toxic by skin contact. Experimental reproductive effects. Combustible when exposed to heat or flame. .
Standards and Recommendations
OSHA PEL: TWA 2 mg/m3
ACGIH TLV: TWA 2 mg/m3
Specification
1、Fire Fighting Measures
General Information: As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Extinguishing Media: Use water spray, dry chemical, carbon dioxide, or chemical foam.
2、Handling and Storage
Handling: Do not breathe dust, vapor, mist, or gas. Do not get in eyes, on skin, or on clothing. Use only in a chemical fume hood.
Storage: Store in a tightly closed container. Store in a dry area. Keep refrigerated. (Store below 4°C/39°F.)