Potassium Hydroxide

EP, NF + LEC + Microbiological requirements

CAS #:


Molecular Formula:



Caustic Potash, Potash Lye

Molecular Weight:

56.11 g/mol


Potassium Hydroxide is an inorganic compound commonly referred to as Caustic Potash. A colourless solid chemical compound and is a strong base.

Characters Unit Specification
Identity A (EP,BP) Acc.to requirements
Identity B (EP,BP) Acc.to requirements
Identity A (USP) Acc.to requirements
Identity B (USP) Acc.to requirements
Appearance of solution (EP,BP) Correlates to test
Insoluble substances (USP) Correlates to test
Assay (EP,BP) % 85,0-100,5
Assay (USP) % >=85,0
Heavy Metals (as Pb) mg/kg <=10
Carbonate (EP/BP) mg/kg <=10000
Carbonate (USP) mg/kg <=35000
Potassium (USP) % <=59,9
Sodium (EP,BP) mg/kg <=10000
Sodium (USP) mg/kg <=10000
Iron (EP,BP) mg/kg <=10
Sulfates (EP,BP) mg/kg <=200
Phosphates (EP,BP) mg/kg <=100
Chlorides (EP,BP) mg/kg <=200
Bacterial endotoxine lU/g <=5
TAMC 30oC (Total aerobic microbial count) cfu/g <=50
TYMC cfu/g <=10
Escherichia coli cfu/g
Staphylococcus aureus cfu/g
Pseudomonas aeruginosa cfu/g
Salmonella cfu/10g

Shelf Life/Retest Date: Potassium hydroxide CAS No - 1310-58-3 can be kept for at least 25 months if stored in a cool and dry place

Storage/Shipping Conditions:

  • Keep container tightly closed in a cool, well-ventilated place.
  • Storage temperature recommended: < 25°C

Pack Sizes: 5 Kg

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