无水磷酸氢二钾

Description

Hidrógenofosfato de potasio anhidro · CAS 7758-11-4 · K2HPO4. UNII CI71S98N1Z.

Identification

CAS Registry Number	7758-11-4
PubChem CID	24450
Molecular formula	K2HPO4
IUPAC name	dipotassium;hydrogen phosphate
UNII (FDA)	CI71S98N1Z

Computed Descriptors

Molecular Weight	174.176
Hydrogen Bond Donor Count	1
Hydrogen Bond Acceptor Count	4
Rotatable Bond Count	0
Exact Mass	173.88865848
Monoisotopic Mass	173.88865848
Topological Polar Surface Area	83.4
Heavy Atom Count	7
Formal Charge	0
Complexity	46.5

Physical description & handling notes

• Colourless or white granular powder, crystals or masses; deliquescent substance, hygroscopic
• White partially hygroscopic solid; [Merck Index] Colorless or white odorless solid; Hygroscopic; [CHEMINFO] White odorless granules; [MSDSonline]
• White crystals
• Colorless or white granules or powder
• Decomp
• Freely soluble in water. Insoluble in ethanol

Regulatory Status

Regulatory & Food Contact

FDA Substance added to food: EMULSIFIER OR EMULSIFIER SALT, NUTRIENT SUPPLEMENT, PH CONTROL AGENT, SEQUESTRAN FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS ACIDITY_REGULATOR; SEQUESTRANT; YEAST_FOOD: Food Additives EMULSIFIER OR EMULSIFIER SALT, NUTRIENT SUPPLEMENT, PH CONTROL AGENT, SEQUESTRANT, STABILIZER OR THICKENER Group MTDI for phosphorus from all sources, expressed as P TRS 683-JECFA 26/25

GHS notification summary

48.2% (580 / 1203)

GHS Hazard Classification

GHS notification summary	48.2% (580 / 1203)
Reported hazard statements	H315 (40.7%), H318 (10.4%)

Documented Uses

• CIR ingredient: Dipotassium Phosphate
• Used as a buffering agent and corrosion inhibitor in anti-freeze, a culture nutrient for the production of antibiotics, a sequestrant, an emulsifier in cheeses, and a buffer in coffee creamers; Also used in specialty fertilizers, paper-processing aids, and saline cathartics; [HSDB] Used as yeast nutrient, humectant, and laboratory reagent; [CHEMINFO]
• Pulp and Paper Processing [Category: Industry]
• Buffering agent in anti-freeze; nutrient in the culturing of antibiotics
• Sequestrant; emulsifier in specified cheeses
• Most of the commercial output of dipotassium phosphate is used in conjunction with borates, nitrites, nitrates, and/or silicates as corrosion inhibitor systems in ethylene glycol antifreeze formulations. Its second largest use is as a buffer in coffee creamers to prevent casein protein precipitation by coffee acids. Other uses include specialty fertilizers, paper-processing aids, and saline cathartics.

Synonyms

7758-11-4; Dipotassium hydrogen phosphate; DIPOTASSIUM PHOSPHATE; Potassium phosphate dibasic; Dipotassium hydrogenphosphate; Potassium phosphate, dibasic; Dibasic potassium phosphate; Phosphoric acid, dipotassium salt; Potassium dibasic phosphate; Dipotassium monophosphate; Potassium monophosphate; Dipotassium orthophosphate; Dipotassium monohydrogen phosphate; Hydrogen dipotassium phosphate; Potassium phosphate (dibasic); Dipotassium hydrogenorthophosphate

Frequently Asked Questions

What are the CAS number and molecular formula of Hidrógenofosfato de potasio anhidro?

CAS 7758-11-4; molecular formula K2HPO4; molecular weight — g/mol.

What other names is Hidrógenofosfato de potasio anhidro known by?

7758-11-4, Dipotassium hydrogen phosphate, DIPOTASSIUM PHOSPHATE, Potassium phosphate dibasic, Dipotassium hydrogenphosphate, Potassium phosphate, dibasic.

What is the regulatory status of Hidrógenofosfato de potasio anhidro?

Documented regulatory listings: FDA Substance added to food: EMULSIFIER OR EMULSIFIER SALT, NUTRIENT SUPPLEMENT, PH CONTROL AGENT, SEQUESTRAN; FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS; ACIDITY_REGULATOR; SEQUESTRANT; YEAST_FOOD: Food Additives.

Is Hidrógenofosfato de potasio anhidro classified as hazardous?

48.2% of GHS notifications report no hazard classification (580 of 1203).

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.