SYNTANS

POPTAN CSN
A lightfast chrome containing synthetic tannin with buffering and complex forming properties.

POPTAN CSN is a combination of basic chromium salts and a lightfast white tanning agent. The product can be used as selftanning agent or as pretanning and retanning agent in vegetable and chrome tannage. It imparts to the leather a particularly soft handle and a tight grain.

ANALYTICAL DATA

Concentration :88-90% Chromium Oxide : 12%
pH of 10% solution : 4.0
Appearance : Pale green powder readily soluble in water.

PROPERTIES

• Poptan CSN is primarily used for the production of leathers with
  mellowness and supple grain without altering the chrome. leather character.
• The use of Poptan CSN retains fineness and tightness of grain and prepares the leather for level dyeing.
  
• It is preferable to use Poptan CSN in powder form, 4-8% Poptan CSN may be used depending on the type of leather.
  
• Poptan CSN is recommended for neutralizing and retanning of chrome leathers. It also has complex forming and buffering properties.
  

APPLICATIONS

• For the tannage of low chrome wet blue to improve uptake, 1%-2% is recommended.
• For the retannage of chromed stock, sides, skins or splits for clothing and gloving, 2%-6% is recommended.
• When used as retanning agent for E.I. tanned goat skins, it imparts an extremely soft handle and fills up the leather without unduly loading the gain.
• When used alone it yields white leathers of good fullness and highly resilient handle.