醋酸钾

Description

POTASSIUM ACETATE, ACS · CAS 127-08-2 · C2H3O2K. UNII M911911U02. Melting Point: 292 °C; Melting Point: 309 °C; Density: 1.6 g/cm³.

Identification

CAS Registry Number	127-08-2
PubChem CID	517044
Molecular formula	C2H3O2K
IUPAC name	potassium acetate
UNII (FDA)	M911911U02
FEMA number	2920

Computed Descriptors

Molecular Weight	98.14
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	2
Rotatable Bond Count	0
Exact Mass	97.97701082
Monoisotopic Mass	97.97701082
Topological Polar Surface Area	40.1
Heavy Atom Count	5
Formal Charge	0
Complexity	34.6

Physical & Chemical Properties

Melting Point	292 °C
Melting Point	309 °C
Density	1.6 g/cm³
Density	1.57 @25 °C
pH	7,5-9,0 (5 % aqueous solution)

Physical description & handling notes

• CBI; Large Crystals; Dry Powder; Liquid; Dry Powder; Large Crystals
• Colourless, deliquescent crystals or a white crystalline powder, odourless or with a faint acetic odour
• Lustrous colorless or white solid; Rapidly deliquescent; [Merck Index] White crystalline solid; [Aldrich MSDS]
• WHITE FLAKES OR CRYSTALLINE POWDER.
• Solubility in water, g/100ml at 20 °C: 256

Regulatory Status

Regulatory & Food Contact	FDA Substance added to food: FLAVORING AGENT OR ADJUVANT ACIDITY_REGULATOR; PRESERVATIVE: Food Additives Group ADI of "not limited" for acetic acid and its potassium and sodium salts. This ADI was maintained at the NMRS 53/TRS 539-JECFA 17/35 FAS 5/NMRS 53A-JECFA 17/31 CIR / INCI: Cosmetic ingredients (Potassium Acetate) -> CIR (Cosmetic Ingredient Review)
GHS notification summary	87.3% (418 / 479)

GHS Hazard Classification

GHS notification summary	87.3% (418 / 479)
Reported hazard statements	H315 (11.5%), H319 (12.7%), H335 (11.5%)

Documented Uses

• CIR ingredient: Potassium Acetate
• Used as a potassium supplement; [Merck Index] Used in the chemical industry (synthesis), textile processing industry, anti-freeze agents, foods (permitted additive in the UK), and pharmaceuticals; Also used as a pH regulator and industrial de-icer; [IUCLID] Used in foods as a buffer and antimicrobial preservative; [JECFA] Used as a dehydrating agent and in crystal glass; [Hawley]
• Textiles (Fiber & Fabric Manufacturing) [Category: Industry]
• Glass Manufacturing [Category: Industry]
• EPA Safer Chemical Functional Use Classes -> Processing Aids and Additives
• Safer Chemical Classes -> Green circle - The chemical has been verified to be of low concern

Synonyms

Potassium acetate; 127-08-2; Diuretic salt; ACETIC ACID, POTASSIUM SALT; Potassium ethanoate; Acetic acid, potassium salt (1:1); FEMA No. 2920; Octan draselny; Kali aceticum; Potassium acetates; DTXSID7027043; Potassium acetate in plastic container; INS NO.261; E261; INS-261; INS-261(I)

Frequently Asked Questions

What are the CAS number and molecular formula of POTASSIUM ACETATE, ACS?

CAS 127-08-2; molecular formula C2H3O2K; molecular weight — g/mol.

What other names is POTASSIUM ACETATE, ACS known by?

Potassium acetate, 127-08-2, Diuretic salt, ACETIC ACID, POTASSIUM SALT, Potassium ethanoate, Acetic acid, potassium salt (1:1).

What is the regulatory status of POTASSIUM ACETATE, ACS?

Documented regulatory listings: FDA Substance added to food: FLAVORING AGENT OR ADJUVANT; ACIDITY_REGULATOR; PRESERVATIVE: Food Additives; Group ADI of "not limited" for acetic acid and its potassium and sodium salts. This ADI was maintained at the .

Is POTASSIUM ACETATE, ACS classified as hazardous?

87.3% of GHS notifications report no hazard classification (418 of 479).

What are the key physical properties of POTASSIUM ACETATE, ACS?

Melting Point: 292 °C; Melting Point: 309 °C; Density: 1.6 g/cm³; Density: 1.57 @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.