Product Description

Synonyms: Ammonium hydrogen carbonate; Ammonium acid carbonate
CAS Number: ********7, Molecular Weight: *9.1, Chemical Formula: NH4HCO3, EINECS EC Number: ********5

Ammonium Bicarbonate BP
(Ammonium Hydrogen Carbonate)
NH4HCO3 **- *9.1 **- ********7

DEFINITION
Ammonium Hydrogen Carbonate contains not less than *8.0 per cent and not more than **1.0 per cent of the equivalent of ammonium hydrogen carbonate.

CHARACTERS
A fine, white, crystalline powder or white crystals, slightly hygroscopic, freely soluble in water, practically insoluble in alcohol. 
It volatilizes rapidly at *0C. The volatilization takes place slowly at ambient temperatures if the substance is slightly moist. It is in a state of equilibrium with ammonium carbamate.

IDENTIFICATION
A. It gives the reaction of carbonates and bicarbonates.
B. Dissolve *0 mg in 2 ml of water. The solution gives the reaction of ammonium salts.

TESTS
Solution S
Dissolve *4.0 g in **0 ml of distilled water. Boil to remove the ammonia, allow to  cool and dilute to **0.0 ml with distilled water.
Chlorides
Dilute 5 ml of solution S to *5 ml with water. The solution complies with the limit  test for chlorides (*0 ppm).
Sulphates
*5 ml of solution S complies with the limit test for sulphates (*0 ppm)
Iron<br>Dilute 1.8 ml of solution S to *0 ml with water. The solution complies with the limit  test for iron (*0 ppm).
Heavy metals
Dissolve cautiously 2.5 g in *5 ml of 1 M hydrochloric acid. *2 ml of the solution  complies with limit test A for heavy metals (*0 ppm)

Ammonium Bicarbonate FCC Food Grade
NH4HCO3 Formula wt *9.*6
INS: **3(ii) CAS: [********7]

DESCRIPTION
It occurs as white crystals or as a crystalline powder. It volatilizes rapidly at *0°, dissociating into ammonia, carbon dioxide, and water, but it is quite stable at room temperature. One gram dissolves in about 6mL of water. It is insoluble in alcohol.

REQUIREMENTS
Identification: A sample gives positive tests for Ammonium and for Bicarbonate.
Assay: Not less than *9.0% and not more than **0.5% of NH4HCO3.
Chloride: Not more than 0.**3%.
Lead: Not more than 3 mg/kg.
Nonvolatile Residue: Not more than 0.*5% (0.*5% for products containing a suitable ant caking agent).
Sulfur Compounds (as SO4): Not more than 0.**7%.