Potassium hydroxide

Potassium hydroxide

Potassium hydroxide, commonly known as caustic potash, is a common, strongly alkaline inorganic compound that appears as a white flake or powder solid at room temperature. It is highly soluble in water—a process accompanied by intense heat release—and is extremely hygroscopic, deliquescent, and corrosive.

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Technical parameters
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Product Description

Key physicochemical properties

1. Appearance: Pure white solid in the form of flakes, lumps, or powder.

2. Chemical properties: A strong alkali; its aqueous solution is strongly alkaline, and it neutralizes with acids to form potassium salts.

3. Reaction with air: Highly hygroscopic (readily absorbs moisture from the air and deliquesces) and absorbs carbon dioxide to form potassium carbonate.

4. Solubility: Soluble in water and ethanol (releasing significant heat upon dissolution); insoluble in ether.

Safety and Protection

1. Highly corrosive: Causes severe burns and corrosion to the skin, eyes, and respiratory tract; in the event of contact, rinse immediately with copious amounts of water.

2. Storage requirements: Store in a sealed, dry container to prevent moisture absorption, deliquescence, and degradation caused by absorbing carbon dioxide; keep away from acids and flammable materials.

Technical parameters

Quality specification
Iterm	POTASSIUM HYDROXIDE Specification	POTASSIUM HYDROXIDE Result
KOH %	≥90	90.32
K2CO3 %	≤0.5	0.31
Chloride (Cl) %	≤0.005	<0.005
Sulfate (SO4 2-) %	≤0.002	<0.002
Nitrate Nitrite (N) %	≤0.0005	<0.0005
Phosphate (PO4) %	≤0.002	<0.002
Silica (SiO3)%	≤0.01	0.0003
Fe%	≤0.0002	0.00003
Na %	≤1.0	0.47
Ca %	≤0.002	0.000051
Al %	≤0.001	0.00003
Ni %	≤0.0005	0.00032
Pb%	≤0.001	0.001
Conclusion	Qualified

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Product Name: Potassium hydroxide

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Potassium hydroxide

Key physicochemical properties

Safety and Protection

Quality specification