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Potassium Hydroxide

Name: Potassium Hydroxide
SKU: 0

Basic Information

CAS No.: 1310-58-3
Molecular Formula: KOH
Molecular Weight: 56.11

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Product Details

Potassium Hydroxide (KOH) is a white, hygroscopic solid with strong alkalinity and corrosiveness. It is highly soluble in water and widely used in alkaline batteries, liquid soap manufacturing, biodiesel production, pH regulation, chemical synthesis, and industrial cleaning processes.

Chemical Properties

Property	Value
Melting point	361°C (lit.)
Boiling point	1320°C
Density	1.450 g/mL at 20 °C
Vapor pressure	1 mm Hg ( 719 °C)
Refractive index	n20/D 1.421
Fp	52 °F
Storage temp.	Store at +5°C to +30°C.
Solubility	H2O: 1 M at 20 °C, clear, colorless
Form	Powder
Specific Gravity	1.09
Color	White
Odor	Odorless
PH	10.98(1 mM solution);11.95(10 mM solution);12.88(100 mM solution);
Explosive limit	3.5-15.0%(V) (ethanol)
Water Solubility	Soluble
Sensitive	Air Sensitive & Hygroscopic
Merck	14,7640
Exposure limits	Ceiling in air 2 mg/m3 (ACGIH).
Dielectric constant	3.3（Ambient）
Stability:	Stable, but very hygroscopic. Dissolves exothermically in water. Incompatible with most metals, strong acids, acid chlorides, organic materials, zinc, aluminium, nitroalkanes, nitrobenzene, chlorine dioxide. Reacts vigorously with a wide variety of other materials. Readily absorbs water and carbon dioxide from the air.
InChIKey	KWYUFKZDYYNOTN-UHFFFAOYSA-M
LogP	-1.380 (est)
CAS DataBase Reference	1310-58-3(CAS DataBase Reference)
NIST Chemistry Reference	Potassium hydroxide(1310-58-3)
EPA Substance Registry System	Potassium hydroxide (1310-58-3)

Safety Information

Property	Value
Hazard Codes	C,F,T,Xi
Risk Statements	34-35-22-11-39/23/24/25-23/24/25-36/38-36/37-67-52/53
Safety Statements	7-16-36/37-45-36/37/39-26-61
RIDADR	UN 2924 3/PG 2
WGK Germany	1
RTECS	TT2100000
F	3
Autoignition Temperature	425 °C (ethanol)
TSCA	Yes
HazardClass	8
PackingGroup	II
HS Code	28259090
Hazardous Substances Data	1310-58-3(Hazardous Substances Data)
Toxicity	LD50 orally in rats: 1.23 g/kg (Smyth)

Product Usage

Potassium hydroxide is a strongly alkaline inorganic compound widely used across many industrial fields. In chemical manufacturing, it is an important raw material for producing potassium carbonate, potassium permanganate, and various potassium salts. In the textile industry, it is used for mercerization to enhance fiber luster and dye adsorption. In the personal care industry, it serves as a key saponification agent in the production of liquid soaps, shampoos, and other mild detergents. In electroplating and electronics, it is used as a circuit board etchant and pH adjuster. Additionally, it plays an important role in battery manufacturing (e.g., alkaline battery electrolytes), food processing (cleaning and peeling), and pharmaceutical synthesis. Its advantages include strong reactivity and good solubility, but caution is required due to its strong corrosiveness.

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Potassium Hydroxide

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