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Carbamide or Urea
CAS Number: 57-13-6
Molecular Formula: NH2CONH2
Molecular Weight: 60.1
Carbamide or Urea Refined
Urea USP Grade Specifications:
CH4N2O --- 60.06
Urea;
Carbamide CAS 57-13-6
DEFINITION
Urea contains NLT 98.0% and NMT 102.0% of urea (CH4N2O).
IDENTIFICATION
A. Infrared Absorption
B. The retention time of the major peak of the Sample solution corresponds to that of the Standard solution, as obtained in the Assay.
ASSAY
To Pass the test.
Acceptance criteria: 98.0% to 102.0%
Organic Impurities: To pass the test.
Alcohol-Insoluble Matter:
Sample solution: 100 mg/mL of Urea dissolved in warm alcohol
Analysis: If any insoluble residue remains, pass the Sample solution through a tared filter, wash the residue and the filter with 20 mL of warm alcohol per 50 mL of Sample solution, and dry at 105C for 1 h.
Acceptance criteria: NMT 2 mg (0.04%)
Sterility Tests: Where the label states that Urea is sterile, it meets the requirements.
Bacterial Endotoxins Test: Where the label states that Urea must be subjected to further processing during the preparation of injectable dosage forms, it contains NMT 0.003 USP Endotoxin Units/mg of urea.
Packaging and Storage: Preserve in well-closed containers. Store at 25C, excursions permitted between 15C and 30C.
Urea FCC Food Grade Specifications
Carbamide
CH4N2O Formula weight 60.06
CAS 57-13-6
DESCRIPTION
Urea occurs as a colorless to white, prismatic, crystalline powder or as small, white pellets. It is commonly produced from CO2 by ammonolysis or from cyanamide by hydrolysis. It is freely soluble in water and in boiling alcohol, but practically insoluble in chloroform and in ether. It melts at a range of 132C to 135C.
Function Fermentation aid.
REQUIREMENTS
Identification:
A. Heat about 500 mg of sample in a test tube until it liquefies. Ammonia vapor is produced. Continue heating until the liquid becomes turbid, and then cool. Dissolve the fused mass in a 1:10 sodium hydroxide solution:water mixture. Add 1 drop of cupric sulfate TS. A red-violet colored solution develops.
B. Dissolve 100 mg of sample in 1 mL of water, and add 1 mL of nitric acid. A white precipitate of urea nitrate forms.
Assay: Not less than 99.0% and not more than 100.5% of CH4N2O.
Alcohol-Insoluble Matter: Not more than 0.04%.
Chloride: Not more than 0.007%.
Lead: Not more than 5 mg/kg.
Loss on Drying: Not more than 1.0%.
Residue on Ignition: Not more than 0.1%.
Sulfate: Not more than 0.01%.
Specifications of Urea Analytical Reagent Grade
NH2CONH2
Formula Weight 60.06
CAS Number 57-13-6
REQUIREMENTS
Assay: 99.0-100.5%
Melting point: 132-135C
MAXIMUM ALLOWABLE
Insoluble matter: 0.01%
Residue after ignition: 0.01%
Chloride (Cl): 5 ppm
Sulfate (SO4): 0.001%
Heavy metals (as Pb): 0.001%
Iron (Fe):0.001%
We also supply Urea Refined of BP Ph Eur Grade.
Please visit SDS Safety Data Sheet of Urea Suppliers.
American Molecules, also known as ammol.org is a distributor, supplier and manufacturers' representative of all types of Pharmaceuticals, Functional Ingredients, Excipients and Specialty Chemicals in Texas USA. Our principals manufacture supply and export USP NF BP, Ph Eur, etc grades of chemicals pure and reagent grade, mineral fortifiers, FCC food grade. Tailor made particle size and customized specifications are offered. The principal's facility is having one or more of the certifications like FDA approval and GLP, cGMP, ISO9001, ISO14001, ISO/IEC 17025, ISO22000, FSSC 22000, ISO45001, FSSAI, Kosher, HALAL, COPP, WHO-GMP certified and Written Confirmation (WC) for export to Europe is available. The manufacturers suppliers and exporters observe WHO Good Manufacturing Practices and Good Laboratory Practices.
Suppliers and Manufacturers' Representative:
9910 Bent Oak Dr
Houston, TX 77040, USA
Call Toll Free: 1-855-55-AMMOL 1-855-552-6665
Email: info@ammol.org