Ammonium Carbonate:
Ammonium Carbonate FCC Food Grade
INS: 503(i); CAS: [10361-29-2]
DESCRIPTION
Ammonium Carbonate occurs as a white powder or as hard, white or translucent masses. It consists of ammonium bicarbonate (NH4HCO3) and ammonium carbamate (NH2·COONH4) in varying proportions. On exposure to air it becomes opaque and is finally converted into porous lumps or a white powder of ammonium bicarbonate because of the loss of ammonia and carbon dioxide. One gram dissolves slowly in about 4 mL of water. Its solutions are alkaline to litmus.
Function: Buffer; leavening agent; neutralizing agent.
REQUIREMENTS
Identification: When heated, a sample volatilizes without charring, and the vapor is alkaline to moistened litmus paper. A 1:20 aqueous solution effervesces when an acid is added.
Assay: Not less than 30.0% and not more than 34.0% of NH3.
Chloride: Not more than 0.003%.
Lead: Not more than 3 mg/kg.
Nonvolatile Residue: Not more than 0.05%.
Sulfur Compounds (as SO4): Not more than 0.005%.
Ammonium Carbonate ACS AR Analytical Reagent Grade
CAS Number 8000-73-5
NOTE. This product is a mixture of variable proportions of ammonium bicarbonate and ammonium carbamate.
REQUIREMENTS
Assay | ≥30.0% NH3 |
MAXIMUM ALLOWABLE
Insoluble matter | 0.005% |
Nonvolatile matter | 0.01% |
Chloride (Cl) | 5 ppm |
Sulfur compounds (as SO4) | 0.002% |
Heavy metals (as Pb) | 5 ppm |
Iron (Fe) | 5 ppm |
For Original Monographs of IP Indian Pharmacopoeia BP British Pharmacopoeia USP US Pharmacopoeia FCC Food Grade product, please check with the respective web-pages or books.