Potassio idrossido, pastiglie, Pharmpur®, Ph Eur, BP, NF

- Synonyms: Potash caustic, Potassium hydrate, Potassium oxide hydrate
- KOH
- M = 56,11 g/mol
- CAS [1310-58-3]
- EINECS-No.: 215-181-3
- Solub. in water: (20 ºC): soluble
- Melting point: 360 ºC
- Boiling point: 1320 ºC
- LD 50 (oral, rat): 273 mg/kg
- EC-Index-No.: 019-002-00-8
- ADR: 8 C6 II UN 1813
- IMDG: 8 II UN 1813
- IATA/ICAO: 8 II UN 1813
- GHS-signal word: Danger
- GHS-H sentences: H314 - H302
- GHS-P sentences: P260 - P303+P361+P353 - P305+P351+P338 - P310 - P405 - P501a
- Tariff number: 2815 20 10 00
- Applications: analytical chemistry, laboratory reagent, titrant in volumetric analysis, synthesis of organic products, in the pharmaceutics industry.

SPECIFICATIONS
assay (EP): 85,0 - 100,5%
assay (NF): min. 85,0 %
identification: passes test
appearance of solution: clear and colourless
insoluble matter: passes test
pH : min. 10,5
potassium carbonate (K2CO3)(NF): max. 3,5 %
carbonates (as K2CO3)(EP): max. 2,0 %
chlorides (Cl): max. 200 ppm
phosphates (as PO4): max. 100 ppm:
sulfates (SO4): max. 200 ppm
aluminium (Al): max. 0,2 ppm
iron (Fe): max. 10 ppm
potassium (K): min. 59,9%
sodium (Na): max. 1,0 %