Ácido Cítrico

Ácido Cítrico

Desincrustante utilizado para el lavado químico de Equipos de Diálisis y membranas de Osmosis

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Molecular formula: C6H8O7
Molecular mass: 92.13 g/mol
Purity test: minimum of 99.5%
Humidity: maximum of 0.5 %
Boiling point: 153 ºC

Citric acid is a translucent or white solid which is available as a granular powder. Citric acid crystallizes from hot concentrated aqueous solutions in the form of large rhombic prism-shaped crystals containing one water molecule, which it loses when heated at 100 ºC, temperature at which it simultaneously melts.

Citric acid has a pleasant strong acidic (sour) taste and it is produced by a fermentation process. Citric acid was originally obtained by the physical extraction of lemon juice acid but, at present, commercial production of citric acid is accomplished mainly by fermentation processes that use dextrose (glucose) or sugar cane molasses as raw material as well as Aspergillus niger as the fermentation organism. Fermentation can take place in deep tanks (submerged fermentation, which is the most common method) or in shallow tanks (surface fermentation). Fermentation produces liquid citric acid, which is then purified, concentrated and crystallized.

Uses

  • Citric acid is used for the chemical cleaning of osmosis membranes (descaling action; in 2.5% solutions it is effective within a 30 minute minimum contact time and at 35º)..
  • Due to its descaling action, citric acid is used for the chemical cleaning of dialysis equipment (the solution depends on the equipment manufacturer’s recommendations).

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