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.