BIURET

PRODUCT IDENTIFICATION

CAS NO. 108-19-0

BIURET

EINECS NO. 203-559-0
FORMULA NH2CONHCONH2
MOL WT. 103.08

H.S. CODE

 
TOXICITY  
SYNONYMS Allophanic acid amide; Carbamoylurea; Carbamylurea;
Allophanamide; Imidodicarbonic diamide;
SMILES  

CLASSIFICATION

 

PHYSICAL AND CHEMICAL PROPERTIES

PHYSICAL STATE white crystalline powder
MELTING POINT 187 - 190 C (Decomposes)
BOILING POINT  
SPECIFIC GRAVITY  
SOLUBILITY IN WATER  
pH  
VAPOR DENSITY  

REFRACTIVE INDEX

 

NFPA RATINGS

Health: 2; Flammability: 0; Reactivity: 0

AUTOIGNITION

 

FLASH POINT

 

STABILITY Stable under ordinary conditions. Moisture sensitive.

APPLICATIONS

Biurate is a a condensation compound of urea, equivalent to two molecules of urea less one of ammonia. It is a white needles; soluble in hot water; decompose at 190 C. It is chelated with Cu2+ in alkaline solution to form an intense violet-red color. The reaction also occurs with polypeptides, but not with dipeptides or amino acids. It is used in colorimetric methods for total proteins.

Carbamic acid is a compound of chemical formula H2NCOOH. But it exists only in the form of carbamate (its salt or ester), carbamide (amide) and carbamoyl (acyl radical). Carbamate structure inhibits cholinesterase and many insecticides and parasiticides contain carbamate fuctional group. It is highly toxic to human also. Heavy exposure to IT can cause carbamate poisoning. Natural carbamide (urea) can be found in protein metabolism in urine. Carbamoyl is the radical NH2CO-, also called carbamyl. It is involved in the biosynthesis of the pyrimidine ring. Carbamoyl compounds, such as salicylamides, are important for the preparation of pharmaceutical products, pesticides, dyes, and biosynthesis researches.

SALES SPECIFICATION

APPEARANCE

white crystalline crystals
CONTENT

97.0% min

LOSS ON DRYING

1.0% max

MELTING POINT

187 - 190 C

TRANSPORTATION
PACKING 25kgs fiber drum
HAZARD CLASS 8 (Packing Group: III)
UN NO. 3260
OTHER INFORMATION
Hazard Symbols: XI, Risk Phrases: 36/37, Safety Phrases: 24/25
BIOLOGICAL STAINS, INDICATORS