Friday, November 25, 2011

Basic Chromium Sulphate (BCS)

  • Chromium(III) sulfate usually refers to the inorganic compound with the formula Cr2(SO4)3 • 12(H2O).
  • Chrome Sulphate is the basic tanning chemical.Apart from being expensive, Chrome Sulphate is also a serious pollutant.
  • Finishing chemicals are used to impart certain properties to the leather like softness, color, appearance etc.Like tanning chemicals finishing chemical also get discharged into wastewater.
  • Only those chemicals are fully retained which are applied as surface coating.
  • Basic chromium sulfate is produced from chromate salts by reduction with sulfur dioxide.The collected data shows 50-150 liter water is used for conversion of one kg of raw skin into leather

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