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Appearance : Crystalline white powder
Active Content : 85 ± 1 %
pH : 1.3-1.5
Solubility : Readily soluble in acidified water
Light fastness : Good


  • Strong and durable tanning properties
  • Good compactness in leathers
  • Ensures long damp shelf life
  • Sound environmental impact


  • DEPSON - T dissolves thoroughly in pickle bath and tanning is started at an approximate pH of 2.5. Colourless hydrogen peroxide indicates the penetration by turning to yellowish orange colour. A slow, progressive and steady pH increase with the help of mild alkaline salts fixes the tannins to get eventual pH around 4.0.
  • Emulsifying action on leather’s top layer and a modicum of fat liquoring in acidic media provide good wetting and uniform distribution of the tannins.
  • No major changes are required in the downstream operations as per up-to-date tan yards.
  • Optimal percentage of DEPSON - T lies about 8-10% on pelt weight. Resulting chrome free leathers record shrinkage temperature values about 80-85°C which is further enhanced with the help of subsequent retanning agents


This information is based on our present state of knowledge and belief and is without any obligation on our part.

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