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Potassium hydroxide
Potassium hydroxide is a common inorganic base with a chemical formula of KOH and a molecular weight of 56.1. White powder or flake solid, melting point 380 ℃, boiling point 1324 ℃, relative density 2.04 g/cm3, refractive index n20/D 1.421, vapor pressure 1mmHg (719 ℃). Its properties are similar to sodium hydroxide, which is strongly alkaline and corrosive. The pH of a 0.1 mol/L solution is 13.5. Easily absorb moisture in the air and deliquescence, absorbing carbon dioxide to form potassium carbonate.
Physical properties: white flakes, granules, shiny, color allowed, hygroscopic, soluble in Chemical properties: Melting point 318.4 ℃ Boiling point 1390 ℃ The relative density of Solubility: soluble in water, and strongly exothermic. Dissolved in ethanol and glycerol easily; insoluble in acetone, ether. Exposed on the air, it will eventually completely dissolved into solution.chemical caustic soda flakes manufacturers in china
Item

Flake
Standard

Result
KOH

90.0

90.5
K2CO3

0.5

0.48
Chloride (Cl)

0.005

0.0045
Fe

0.0005

0.00043
Sulfate (SO42-)

0.005

0.0046
Nitrate& Nitrite (N)

0.0005

0.0048
Na

0.8

0.01
Phosphate (PO4)

0.005

0.0005
Silica (SiO3)

0.01

0.008
Al

0.002

0.002
Ca

0.005

≤0.005
Ni

0.0005

≤0.0005
Heavy Metal (as Pb)

0.002

≤0.002