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207861

Sigma-Aldrich

Ammonium carbonate

ACS reagent, ≥30.0% NH3 basis

Synonym(s):

Hartshorn salt

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About This Item

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:
329752026
NACRES:
NA.21

grade

ACS reagent

vapor density

2.7 (vs air)

description

Mixture of variable proportions of ammonium bicarbonate and ammonium carbamate

form

powder or chunks

concentration

≥30.0% NH3

impurities

≤0.005% insolubles
≤0.01 nonvolatiles

anion traces

chloride (Cl-): ≤5 ppm
sulfate (SO42-): ≤0.002%

cation traces

Fe: ≤5 ppm
heavy metals: ≤5 ppm (by ICP-OES)

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

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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.
Ammonium carbonate is commonly used in producing ammonium sulfate as a fertilizer. It is formed by the reaction of ammonia and carbon dioxide. Ammonium carbonate is also the principal ingredient of smelling salts because of its characteristic strong ammonia odor.

Application

Ammonium carbonate has been used as a reducing agent in the preparation of an iron-catalyst for supercritical Fischer Tropsch synthesis (SC-FTS). It may also be used in the hydrometallurgical extraction of zinc, copper and nickel.
Ammonium carbonate may be employed in the following studies:
  • Preparation of 3,4-dihydropyrimidin-2(1H)-one and 1,4-dihydropyridine derivatives, via Biginelli and Hantzsch reactions.
  • Preparation of ammonium carbonate buffer.
  • Synthesis of dihyropyridones derivatives.

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

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Diesel-length aldehydes and ketones via supercritical Fischer Tropsch Synthesis on an iron catalyst.
Durham E, et al.
Applied Catalysis A: General, 386(1), 65-73 (2010)
Middle distillates production via Fischer-Tropsch synthesis with integrated upgrading under supercritical conditions.
Zhang S, et al.
AIChE Journal, 60(7), 2573-2583 (2014)
Gowariker V, et al.
The Fertilizer Encyclopedia, 42-42 (2009)
Ammonium Compounds.
Weston CW, et al.
Kirk-Othmer Encyclopedia of Chemical Technology (2003)
Synthesis of 3, 4-dihydropyrimidin-2 (1H)-ones and 1, 4-dihydropyridines using ammonium carbonate in water.
Tamaddon F, et al.
Tetrahedron Letters, 51(8), 1187-1189 (2010)
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