11204

Ammonium carbonate

puriss., meets analytical specification of NF, Ph. Franc., FCC

• Synonym(s): Hartshorn salt
• Linear Formula: (NH₄)₂CO₃
• CAS Number: 506-87-6
• Molecular Weight: 96.09
• Beilstein: 4253487
• EC Number: 208-058-0
• MDL number: MFCD00010890
• UNSPSC Code: 12352300
• eCl@ss: 38020208
• PubChem Substance ID: 329749324
• NACRES: NA.21

Properties

• vapor density: 2.7 (vs air)
• grade: puriss.
• form: powder or crystals
• quality: meets analytical specification of NF, Ph. Franc., FCC
• concentration: 30.0-34.0% (NH₃ , titration)
• impurities: residual solvents, complies; ≤0.0005% heavy metals (as Pb); ≤0.05% non-volatile matter
• ign. residue: ≤0.05% (as SO₄)
• anion traces: chloride (Cl^-): ≤10 mg/kg; sulfate (SO₄^2-): ≤50 mg/kg
• cation traces: As: ≤3 mg/kg; Fe: ≤5 mg/kg; Pb: ≤3 mg/kg
• suitability: complies for appearance of solution
• SMILES string: N.N.OC(O)=O
• InChI: 1S/CH2O3.2H3N/c2-1(3)4;;/h(H2,2,3,4);2*1H3
• InChI key: PRKQVKDSMLBJBJ-UHFFFAOYSA-N

Description

General description

Ammonium carbonate is an ammonium salt. It is colorless and is composed of water soluble cubic crystals. It can be synthesized by reacting carbon dioxide with ammonia. It is widely employed as a CO₂ source in fire extinguishers. Calorimetric estimation of enthalpies of absorption of CO₂ in aqueous solutions of ammonium carbonate in the temperature range of 35-80°C have been reported.

Application

Ammonium carbonate may be employed in the preparation of 3,4-dihydropyrimidin-2(1H)-one and 1,4-dihydropyridine derivatives, via Biginelli and Hantzsch reactions. It can also be actively used as buffer in the separation, detection, and identification of the peptide fragments generated in the tryptic digests of ovalbumin and serum albumin, via size exclusion liquid chromatography and reverse phase liquid chromatography coupled to mass spectrometry.

Safety Information

• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 1
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable