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Potassium hydroxide！
Molecular Formula: KOH
Molecular Weight: 56.11
Alias: Potassium hydrate,Caustic potash,Potassa
Properties: white granules, lumps or rods; has strong basicity and causticity; can easily absorb moisture in the air; soluble in water, ethanol and glycerol.
Relative Density: 2.044, m.p.: 380℃(anhydrous)
Quality standard: GB/T2306-80
ltem GR AR CP
(KOH Assay,% ≥82 82 80
Clarity Qualified Qualified Qualified
(K2CO3)Carbonate,%≤ 1 2 3
(Cl)Chloride,%≤ 0.005 0.01 0.025
(SO4)Sulfale,% ≤ 0.003 0.005 0.01
(N)Nitrogen,% ≤ 0.0005 0.0005 0.001
(PO4)Phosphate,%≤ 0.002 0.005 0.01
(SiO3)Silicate,%≤ 0.01 0.02 0.1
(Na)Sodium,%≤ 1.0 2.0 2.0
(Al)Aluminum,%≤ 0.002 0.005 --
(Ca)Calcium,% ≤ 0.003 0.01 0.02
(Fe)Iron,%≤ 0.0005 0.001 0.002
(Ni)Nickel,%≤ 0.0001 0.0005 --
l(Pb)Heavy metals,%≤0.002 0.002 0.003
ACS grade
Item ACS Grade
(KOH)Assay≥99.0%
(K2CO3)Potassium Carbonate≤2.00%
(Cl)Chloride≤0.01%
(N)Nitrogen compounds≤0.001%
(PO4)Phosphate≤5ppm
(SO4)Sulfate≤0.003%
(Pb)Heavy metals≤0.001%
(Fe)Iron≤0.001%
(Ni)Nickel≤0.001%
(Ca)Calcium≤0.005%
(Mg)Magnesium≤0.002%
(Na)Sodium≤0.05%
Storage: Closed tightly in dry place.
Use: For acid-base neutralization to regulate the pH-value of solution; as basic chemical reagent, absorbent of carbon dioxide; as saponifier.
Hazard: Class 8.2 Corrosives alkalinous article.