磷酸二氢铵（APM）

Description

Ammonium Phosphate, Monobasic · CAS 7722-76-1 · H3N.H3O4P. UNII 09254QB17T. Melting Point: 190 °C; Solubility: 40.4 g/100 g water at 25 °C; Density: 1.80 g/cu cm.

Identification

CAS Registry Number	7722-76-1
PubChem CID	24402
Molecular formula	H3N.H3O4P
IUPAC name	azanium dihydrogen phosphate
UNII (FDA)	09254QB17T

Computed Descriptors

Molecular Weight	115.03
Hydrogen Bond Donor Count	3
Hydrogen Bond Acceptor Count	4
Rotatable Bond Count	0
Exact Mass	115.00344467
Monoisotopic Mass	115.00344467
Topological Polar Surface Area	81.6
Heavy Atom Count	6
Formal Charge	0
Complexity	49.8

Physical & Chemical Properties

Melting Point	190 °C
Solubility	40.4 g/100 g water at 25 °C
Density	1.80 g/cu cm
Density	1.803 @25 °C

Physical description & handling notes

• Dry Powder; Other Solid; Large Crystals; CBI; Liquid
• White solid with a slight odor of ammonia; [CAMEO]
• White, tetrahedral crystals
• Brilliant white crystals or powder
• Odorless
• Faint acid

Regulatory Status

Regulatory & Food Contact	FDA Substance added to food: LEAVENING AGENT, MALTING OR FERMENTING AID, PH CONTROL AGENT ACIDITY_REGULATOR; FLOUR_TREATMENT_AGENT; LEAVENING_AGENT; R: Food Additives ACID AMMONIUM PHOSPHATE Group MTDI for phosphorus from all sources, expressed as P. TRS 696-JECFA 27/25 CIR / INCI: Buffering; Oral care
GHS notification summary	85.8% (994 / 1158)

GHS Hazard Classification

GHS notification summary	85.8% (994 / 1158)
Reported hazard statements	H319 (12.1%)

Documented Uses

• Used in fertilizer, matches, baking powder, and fireproofing of paper and wood products; [HSDB]
• Pulp and Paper Processing [Category: Industry]
• As baking powder with sodium bicarbonate; in fermentations (yeast cultures, etc.); fireproofing of paper, wood, fiberboard, etc.
• Fertilizer; to prevent afterglow in matches; plant nutrient soln; manufacture of bread improvers ... analytical chemistry
• A common fire-extinguishing ingredient in ABC-type dry-powder extinguishers ... Used as flame retardants for cellulosic materials, including plywood, papers, and fabrics, to prevent afterglow in and to control forest fires /Ammonium phosphates/
• Pure ... is used as /a/ fertilizer in irrigated greenhouses (completely water-soluble)

Synonyms

Ammonium dihydrogen phosphate; 7722-76-1; Ammonium biphosphate; MONOAMMONIUM PHOSPHATE; Ammonium dihydrogen orthophosphate; Phosphoric acid, monoammonium salt; Ammonium monophosphate; Ammonium dihydrophosphate; Primary ammonium phosphate; Monobasic ammonium phosphate; Ammonium phosphate, monobasic; Ammonium diacid phosphate; Monoammonium orthophosphate; Monoammonium acid phosphate; Ammonium monobasic phosphate; Dihydrogen ammonium phosphate

Frequently Asked Questions

What are the CAS number and molecular formula of Ammonium Phosphate, Monobasic?

CAS 7722-76-1; molecular formula H3N.H3O4P; molecular weight — g/mol.

What other names is Ammonium Phosphate, Monobasic known by?

Ammonium dihydrogen phosphate, 7722-76-1, Ammonium biphosphate, MONOAMMONIUM PHOSPHATE, Ammonium dihydrogen orthophosphate, Phosphoric acid, monoammonium salt.

What is the regulatory status of Ammonium Phosphate, Monobasic?

Documented regulatory listings: FDA Substance added to food: LEAVENING AGENT, MALTING OR FERMENTING AID, PH CONTROL AGENT; ACIDITY_REGULATOR; FLOUR_TREATMENT_AGENT; LEAVENING_AGENT; R: Food Additives; ACID AMMONIUM PHOSPHATE.

Is Ammonium Phosphate, Monobasic classified as hazardous?

85.8% of GHS notifications report no hazard classification (994 of 1158).

What are the key physical properties of Ammonium Phosphate, Monobasic?

Melting Point: 190 °C; Solubility: 40.4 g/100 g water at 25 °C; Density: 1.80 g/cu cm; Density: 1.803 @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.