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420-04-2

420-04-2 structural image
Product Name: Cyanamide
Formula: CH2N2
Synonyms: Carbimide;Hydrogen cyanamide
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CHEMICAL AND PHYSICAL PROPERTIES

Physical Description Cyanamide appears as colorless deliquescent crystals. Mp: 45 °C; bp: 260 °C. Density: 1.282 g cm-3. Quite soluble in water (77 g / 100 g solution at 15 °C). Soluble in butanol, methyl ethyl ketone, ethyl acetate, alcohols, phenols, amines, ethers. Note: The term "cyanamide" is also used to refer to the important compound calcium cyanamide, which is a different chemical.
Color/Form Orthorhombic, elongated, six-sided tablets from dimethyl phthalate
Boiling Point 500 °F at 760 mmHg (Decomposes) (NIOSH, 2023)
Melting Point 113 °F (NIOSH, 2023)
Flash Point 286 °F (NIOSH, 2023)
Solubility 78 % at 59 °F (NIOSH, 2023)
Density 1.28 (NIOSH, 2023) - Denser than water; will sink
Vapor Density 1.45 (Air = 1)
Vapor Pressure 3.75X10-3 mm Hg at 20 °C
LogP -0.82
Stability/Shelf Life The storage life is at least 3 months at temperatures below 20 °C. The product is packed in steel drums with polyethylene inliners. The packaging size is limited to 50 kg.
Decomposition When heated to decomposition ... it emits toxic fumes of cyanide and nitroxides.
Corrosivity Non-corrosive, as far as known
Heat of Combustion -176.4 kcal/mole (25 °C)
Heat of Vaporization 16.4 kcal/mole
Ionization Potential 10.65eV
Polymerization Cyanamide may polymerize at temperatures above 122 °C or on evaporation of aqueous solutions.
Refractive Index Index of refraction: 1.4418 at 48 °C/D
Dissociation Constants 1.03 (at 25 °C)
Other Experimental Properties Deliquescent; optimum pH for storage of soln is approx 4; attacks various metals
Chemical Classes Nitrogen Compounds -> Cyanamides

SAFETY INFORMATION

Signal word Danger
Pictogram(s)

Corrosion
Corrosives
GHS05

Skull and Crossbones
Acute Toxicity
GHS06

Health Hazard
GHS08
GHS Hazard Statements H314:Skin corrosion/irritation
H317:Sensitisation, Skin
H351:Carcinogenicity
H373:Specific target organ toxicity, repeated exposure
H412:Hazardous to the aquatic environment, long-term hazard
Precautionary Statement Codes P260:Do not breathe dust/fume/gas/mist/vapours/spray.
P273:Avoid release to the environment.
P280:Wear protective gloves/protective clothing/eye protection/face protection.
P303+P361+P353:IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.
P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

COMPUTED DESCRIPTORS

Molecular Weight 42.040 g/mol
XLogP3 -0.3
Hydrogen Bond Donor Count 1
Hydrogen Bond Acceptor Count 2
Rotatable Bond Count 0
Exact Mass 42.021798072 g/mol
Monoisotopic Mass 42.021798072 g/mol
Topological Polar Surface Area 49.8 Ų
Heavy Atom Count 3
Formal Charge 0
Complexity 29.3
Isotope Atom Count 0
Defined Atom Stereocenter Count 0
Undefined Atom Stereocenter Count 0
Defined Bond Stereocenter Count 0
Undefined Bond Stereocenter Count 0
Covalently-Bonded Unit Count 1
Compound Is Canonicalized Yes

PRODUCT INTRODUCTION

description

Cyanamide appears as colorless deliquescent crystals. Mp: 45 °C; bp: 260 °C. Density: 1.282 g cm-3. Quite soluble in water (77 g / 100 g solution at 15 °C). Soluble in butanol, methyl ethyl ketone, ethyl acetate, alcohols, phenols, amines, ethers. Note: The term "cyanamide" is also used to refer to the important compound calcium cyanamide, which is a different chemical.

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