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E508
"Descrizione"
by Frank123 (12008 pt)
2023-Apr-17 10:21

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E508 (Potassium chloride) is a metal halide salt composed of potassium and chloride found in the human body and in nature.

It appears as a white crystalline powder, soluble in water and has a salty taste.

What it is used for and where

Food

Ingredient included in the list of European food additives as E508.

It is used to reduce the amount of salt in food, food supplement, gelling agent, nutritional yeast, salt substitute and flavour enhancer.

Medical and pharmaceuticals

Serum protein biochemical test, laxative. In medicinal tablets it is a gelling and flavouring agent.

Agriculture

Basic raw material for the production of various potassium salts such as potassium carbonate and potassium persulphate. Fast-acting fertiliser that can be absorbed into the soil and has a long persistence. Promotes flowering and fruiting, cold resistance, improves drought resistance, disease resistance and resistance to pests and insects.

Cosmetics

Viscosity control agent. It controls and adapts viscosity to the required level for optimal chemical and physical stability of the product and dosage in gels, suspensions, emulsions, solutions. 

Other applications

Analytical reagent, chromatographic reagent, reference reagent, and buffer. Photography, electroplating, heat treatment of steel. Glass industry as penetrating agent. Textile softener.

The most relevant studies on this ingredient have been selected with a summary of their contents:

     Potassium chloride studies

Typical commercial product characteristics Potassium Chloride

AppearanceWhite powder
pH7.0
Boiling Point
1420°C
Melting Point
770°C(lit.)
Flash Point
1500°C
Density1.98 g/mL at 25°C(lit.)
Refraction Indexn20/D 1.334
Water Solubility
340 g/L (20 ºC)
As≤0.0001%
Heavy metals - Pb≤0.0004
Loss on drying≤1
Nitrogen≤0.001%



  • Molecular Formula   KCl o ClK
  • Molecular Weight    74.548 g/mol
  • Exact Mass    73.932564
  • CAS   7447-40-7  14336-88-0
  • EC Number    231-211-8
  • UNIII    660YQ98I10
  • DSSTox Substance ID  DTXSID5021178
  • IUPAC  potassium;chloride
  • InChI=1S/ClH.K/h1H;/q;+1/p-1
  • InChl Key      WCUXLLCKKVVCTQ-UHFFFAOYSA-M
  • SMILES   [Cl-].[K+]
  • MDL number  MFCD00011360
  • PubChem Substance ID    329820194
  • ChEBI  32588
  • ICSC    1450
  • RXCUI  8591  
  • RTECS   TS8050000
  • NACRES NA.21
  • NCI   C47679

Synonyms

  • Enseal
  • Chlorvescent
  • Muriate of potash
  • Klotrix

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