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Chlor-Alkalis

  Caustic soda
Formula NaOH
Name Sodium hydroxide 50% wt
Synonyms Soda lye, Sodium hydrate
Specifications UN No: 1824
CAS No: 1310-73-2
Specific gravity at 30 °C: Min. 1.514
Purity: Min. 49.50% wt
Sodium chloride: Max. 0.03% wt
Sodium carbonate: Max. 0.20% wt
Iron: Max 0.001% wt
Properties Appearance: Clear liquid
Molecular weight: 40
Specific gravity: 1.53 (15.5°C)
Boiling point: 145°C
Melting point >0°C
Vapour pressure: 6.3 mm Hg (40°C)
Applications
  • Resin regeneration
  • Dyes
  • Viscose rayon
  • Zeolite
  • Sodium polyphosphate
  • Sodium silicate
  • Sodium sulphite
  • Monosodium glutamate
  • Refinery
  • Soap
  • Detergent
  • Pulp and paper
Packaging and transportation
  • Road tank car of 10-12 MT
  • IMDG code: 8226
  • Class: 8
  • Label: corrosive, class 8
  • Packaging group: II
 

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