SoleChem

Potassium acetate

CAS
127-08-2
EC
204-822-2
Mol. Weight
98.14 g/mol

Description

Potassium acetate (CAS 127-08-2), also known by the E-number E261, is an acetate salt used across food, pharmaceutical, and cosmetic manufacturing as a pH buffer, preservative, and processing catalyst.

It delivers precise acidity control and stabilization in formulations where sodium-based alternatives are unsuitable. In food production, it functions as an acidity regulator and preservative in pickled products, sauces, and processed foods.

This ingredient offers a potassium-based alternative for sodium-restricted formulations. Pharmaceutical manufacturers use it as a buffering agent in injectable solutions, oral liquids, and dialysis fluids where controlled pH is critical.

In personal care, it regulates pH in creams, lotions, and hair care products while contributing mild preservation activity. Industrial and laboratory applications include its use as a catalyst in organic synthesis.

It is also utilized as a desiccant in certain chemical processes. Potassium acetate is supplied as a white crystalline powder or granules, and in some cases as a concentrated aqueous solution for industrial use.

Standard grades include food-grade (FCC), USP, BP, and Ph.Eur., supporting use across regulated food, pharmaceutical, and cosmetic applications. These standards ensure high purity for sensitive manufacturing.

Technical-grade material is available for industrial and catalytic uses where pharmaceutical compliance is not required. This versatility makes it a staple chemical for diverse manufacturing sectors globally.

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Physical Properties

Melting Point 292 °C
Density 1.57 g/cm³ @ Temp: 25 °C
Flash Point >250°C
Appearance colourless crystals or white powder
Color White to light brown
Odor Odorless
Form Solid
Water Solubility 2694 g/L (25 ºC)
Vapor Pressure <0.0000001 hPa ( 25 °C)
Refractive Index n 20/D 1.370
pH 7.5-8.5 (50g/l, H2O, 20℃)
Log P -3.72

Safety & Handling (Learn More)

Warning GHS07
Hazard Statements
H315 Causes skin irritation
H319 Causes serious eye irritation
H335 May cause respiratory irritation
Precautionary Statements
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P264 Wash … thoroughly after handling.
P271 Use only outdoors or in a well-ventilated area.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P319 Get medical advice/attention if you feel unwell.
P321 Specific treatment (see … on this label).
P405 Store locked up.
P501 Dispose of contents/container in accordance with local regulations.
P264+P265 Wash … thoroughly after handling.
P302+P352 IF ON SKIN: Wash with plenty of water.
P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing.
P332+P317 Get emergency medical help.
P337+P317 If eye irritation persists: Get medical advice/attention. Get emergency medical help.
P362+P364 Take off contaminated clothing and wash it before reuse.
P403+P233 Store in a well-ventilated place. Keep container tightly closed.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Trade & Regulatory

HS Code 29159000
Storage Class 13 - Non Combustible Solids
WGK (Germany) 1

Documentation

Other Names

MeCO2K|KOAc|CH3CO2K|AcOK|E261|Diuretic salt|ACETIC ACID, POTASSIUM SALT|Acetic acid, potassium salt (1:1)

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