Synonyms: ammonium hydrogen carbonate; ammonium acid carbonatecas number: 1066-33-7, molecular weight: 79.1, chemical formula: nh4hco3, einecs ec number: 213-911-5 ammonium bicarbonate bp(ammonium hydrogen carbonate)nh4hco3 --- 79.1 --- 1066-33-7 definitionammonium hydrogen carbonate contains not less than 98.0 per cent and not more than 101.0 per cent of the equivalent of ammonium hydrogen carbonate. Charactersa fine, white, crystalline powder or white crystals, slightly hygroscopic, freely soluble in water, practically insoluble in alcohol. It volatilizes rapidly at 60c. The volatilization takes place slowly at ambient temperatures if the substance is slightly moist. It is in a state of equilibrium with ammonium carbamate. Identificationa. It gives the reaction of carbonates and bicarbonates.B. Dissolve 50 mg in 2 ml of water. The solution gives the reaction of ammonium salts. Testssolution sdissolve 14.0 g in 100 ml of distilled water. Boil to remove the ammonia, allow to cool and dilute to 100.0 ml with distilled water.Chloridesdilute 5 ml of solution s to 15 ml with water. The solution complies with the limit test for chlorides (70 ppm).Sulphates15 ml of solution s complies with the limit test for sulphates (70 ppm)irondilute 1.8 ml of solution s to 10 ml with water. The solution complies with the limit test for iron (40 ppm).Heavy metalsdissolve cautiously 2.5 g in 25 ml of 1 m hydrochloric acid. 12 ml of the solution complies with limit test a for heavy metals (10 ppm) ammonium bicarbonate fcc food gradenh4hco3 formula wt 79.06ins: 503(ii) cas: [1066-33-7] descriptionit occurs as white crystals or as a crystalline powder. It volatilizes rapidly at 60, 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.
Upington, South Africa
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