Biuret/Allophamic acid amide/Carbamylurea/Imidodicarbonic diamide

English Name: biuret; Allophamic acid amide； Carbamylurea； Imidodicarbonic diamide

Other names: carbamide; Carbamide; Iminodicarbonate diamide; Biuret; Biuret

CAS No.: 108-19-0

C2H5N3O2=103.08

 Grade: CP

Content: 98.0 ~ 100.5%

Melting point: 185 ~ 193 ℃

Water dissolution test: qualified

Ethanol dissolution test: qualified

Sensitivity test: acceptable

Burning residue (calculated by sulfate): ≤ 0.1%

Physicochemical properties: white long flake crystal. Odorless. Hygroscopic. The crystalline product in the water contains 4 molecules of crystalline water. It loses water at about 110 ℃, decomposes at 193 ℃, and becomes melamine at a higher temperature. It is easily soluble in ethanol and slightly soluble in ether. Solubility in water (g/100g): 2.01 at 25 ℃, 7.0 at 50 ℃, 53.5 at 75 ℃, 20105.5 ℃. When the aqueous solution reacts with copper sulfate and sodium hydroxide, it is light red purple. Relative density (d-54) 1.467. Melting point 190 ℃ (decomposition).

Purpose: biochemical research. Determination of copper and protein

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