碳酸氢铵

Description

Ammonium Bicarbonate is identified by CAS 1066-33-7, molecular formula CH5NO3 and molecular weight 79.03 g/mol. UNII 45JP4345C9; ChEBI 184335; InChIKey ATRRKUHOCOJYRX-UHFFFAOYSA-N. Melting Point: 95 °F (USCG, 1999); Melting Point: 107 °C (decomposes); Melting Point: 36 °C.

Identification

CAS Registry Number	1066-33-7
PubChem CID	14013
Molecular formula	CH5NO3
Molecular weight	79.03 g/mol
IUPAC name	azanium hydrogen carbonate
InChIKey	ATRRKUHOCOJYRX-UHFFFAOYSA-N
UNII (FDA)	45JP4345C9
ChEBI ID	CHEBI:184335

Computed Descriptors

Molecular Weight	79.056
Hydrogen Bond Donor Count	2
Hydrogen Bond Acceptor Count	3
Rotatable Bond Count	0
Exact Mass	79.026943022
Monoisotopic Mass	79.026943022
Topological Polar Surface Area	61.4
Heavy Atom Count	5
Formal Charge	0
Complexity	24.8

Physical & Chemical Properties

Melting Point	95 °F (USCG, 1999)
Melting Point	107 °C (decomposes)
Melting Point	36 °C
Solubility	24.8 g/100 g water at 25 °C
Density	1.586 g/cu cm
Density	1.58 g/cm³
Density	1.586 @25 °C
Vapor Pressure	58.9 [mmHg]
Vapor Pressure	7.85 kPa (58.9 mm Hg) at 25.4 °C
Decomposition	35-60 °C

Physical description & handling notes

• Ammonium bicarbonate appears as a white crystalline solid having the odor of ammonia. Soluble in water. The primary hazard is the threat to the environment. Immediate steps should be taken to limit spread to the environment. Used to make other ammonium compounds, in food processing, and for other uses.
• Dry Powder; Liquid
• White crystals or crystalline powder
• Colorless or white solid with a faint odor of ammonia; [Merck Index] White crystalline solid; [MSDSonline]
• COLOURLESS OR WHITE CRYSTALS WITH CHARACTERISTIC ODOUR.
• Colorless or white crystals

Regulatory Status

Regulatory & Food Contact	FDA Substance added to food: DOUGH STRENGTHENER, LEAVENING AGENT, PH CONTROL AGENT, TEXTURIZER RAISING_AGENT: Food Additives NOT SPECIFIED TRS 683-JECFA 26/26 FAS 17-JECFA 26/13 CIR / INCI: Cosmetic ingredients (Ammonium Bicarbonate) -> CIR (Cosmetic Ingredient Review)
GHS notification summary	1.6% (8 / 514)

GHS Hazard Classification

GHS notification summary	1.6% (8 / 514)
Reported hazard statements	H302 (98.4%), H412 (10.3%)

Documented Uses

• CIR ingredient: Ammonium Bicarbonate
• Used in baking powder, cooling baths, fire extinguishers, scale and gypsum removing agents, cold wave solutions, fertilizers, and pharmaceuticals (antacids, stimulants, and expectorants); Also used in chrome leather tanning and as a blowing agent for foam rubber, a leavening agent for baked goods, a defatting agent for textiles, a compost heap additive, and in manufacturing (porous plastics, ceramics, ammonium salts, dyes, and pigments); [HSDB]
• Textiles (Fiber & Fabric Manufacturing) [Category: Industry]
• Leather Tanning and Processing [Category: Industry]
• Dressing Hair [Category: Other]
• Ceramics making [Category: Hobbies]

Synonyms

AMMONIUM BICARBONATE; 1066-33-7; Ammonium hydrogencarbonate; Ammonium hydrogen carbonate; Monoammonium carbonate; Carbonic acid, monoammonium salt; Acid ammonium carbonate; Ammonium acid carbonate; Ammonium hydrogencarbonat; Ammonium bicarbonate (1:1); Carbonic acid, ammonium salt (1:1); 45JP4345C9; DTXSID5035618; RefChem:5547; DTXCID3015618; 213-911-5

Frequently Asked Questions

What are the CAS number and molecular formula of Ammonium Bicarbonate?

CAS 1066-33-7; molecular formula CH5NO3; molecular weight 79.03 g/mol.

What other names is Ammonium Bicarbonate known by?

AMMONIUM BICARBONATE, 1066-33-7, Ammonium hydrogencarbonate, Ammonium hydrogen carbonate, Monoammonium carbonate, Carbonic acid, monoammonium salt.

What is the regulatory status of Ammonium Bicarbonate?

Documented regulatory listings: FDA Substance added to food: DOUGH STRENGTHENER, LEAVENING AGENT, PH CONTROL AGENT, TEXTURIZER; RAISING_AGENT: Food Additives; NOT SPECIFIED.

Is Ammonium Bicarbonate classified as hazardous?

1.6% of GHS notifications report no hazard classification (8 of 514).

What are the key physical properties of Ammonium Bicarbonate?

Melting Point: 95 °F (USCG, 1999); Melting Point: 107 °C (decomposes); Melting Point: 36 °C; Solubility: 24.8 g/100 g water at 25 °C.

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.