Name | Carbohydrazide |
Synonyms | CBH Cabazide Carbazide Carbohydrozide Carbohydrazide 1,3-diaminourea 1,3-diamino-ure 1,3-DIAMINOUREA carbonohydrazide 1,3-Diaminomocovina Carbonic dihydrazide 4-amino-semicarbazid CHZ Oxygen Scavenger cardonic dihydrazide 4-aminosemicarbazide 4-Aminoisosemicarbazide |
CAS | 497-18-7 |
EINECS | 207-837-2 |
InChI | InChI=1/CH6N4O/c2-4-1(6)5-3/h2-3H2,(H2,4,5,6) |
InChIKey | XEVRDFDBXJMZFG-UHFFFAOYSA-N |
Molecular Formula | CH6N4O |
Molar Mass | 90.08 |
Density | 1.02 |
Melting Point | 150-153 °C (lit.) |
Boling Point | 167.26°C (rough estimate) |
Water Solubility | Soluble in water. |
Solubility | DMSO (Slightly), Water (Slightly) |
Vapor Presure | 0Pa at 25℃ |
Appearance | White powder |
Color | White |
Merck | 14,1804 |
BRN | 1747069 |
pKa | 11.81±0.20(Predicted) |
Storage Condition | Keep in dark place,Inert atmosphere,2-8°C |
Stability | Stable, but may explode if heated. Incompatible with strong acids, strong oxidizing agents. |
Refractive Index | 1.4164 (estimate) |
MDL | MFCD00007591 |
Physical and Chemical Properties | character White fine short columnar crystals |
Use | Widely used in the production of drugs, herbicides, plant growth regulators, dyes, etc (1) carbohydrazide is a derivative of hydrazine, which has strong reducibility and can be used as an intermediate in the manufacture of energetic materials, and can also be directly used as a component of explosives and propellants. (2) refinery equipment preservatives, can be used as boiler water treatment agent oxygen scavenger. (3) the chemical fiber industry as a cross-linking agent for elastic fibers. (4) as chemical raw materials and chemical intermediates, it is widely used in medicine, herbicides, plant growth regulators, dyes and other industries. |
Risk Codes | R5 - Heating may cause an explosion R22 - Harmful if swallowed R51/53 - Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. R36/37/38 - Irritating to eyes, respiratory system and skin. R20/21/22 - Harmful by inhalation, in contact with skin and if swallowed. R43 - May cause sensitization by skin contact R38 - Irritating to the skin |
Safety Description | S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S36/37 - Wear suitable protective clothing and gloves. |
UN IDs | UN3077 |
WGK Germany | 3 |
RTECS | FF2625000 |
TSCA | Yes |
HS Code | 29280000 |
Hazard Class | 9 |
Packing Group | III |
white crystalline powder obtained by crystallization from aqueous ethanol. It had a melting point of 153 °c and began to decompose upon dissolution. Very soluble in water, 1% aqueous solution of pH 7.4. Almost insoluble in alcohol, ether, chloroform and benzene. It reacts with hydrochloric acid, sulfuric acid, oxalic acid, phosphoric acid and nitric acid to form salts. The generated chloride is very soluble in water, while the generated sulfate and oxalate are only slightly soluble in water, phosphate and nitrate can not be precipitated and crystallized. In the presence of nitrous acid, the carbohydrazide is converted to the compound carbonyl azide which is highly explosive. The aqueous solution of carbohydrazide gradually decomposes when it is heated with an acid or a base.
carbohydrazide is useful in the field of water treatment as an oxygen scavenger for boiler water and also as a passivating agent for metal surfaces to reduce the corrosion rate of metals. Carbohydrazide can react with dissolved oxygen in water to produce carbon dioxide, nitrogen, and water. When used, powdered carbohydrazide may be directly put into water, or an aqueous solution thereof may be used. They can be used alone or in combination with redox catalysts such as hydroquinone or other Quinones, and cobalt complexes. The carbohydrazide is suitably used at a temperature in the range of 87.8 to 176.7 ° C., I .e., below the vaporization temperature of water.