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Levelling Agent with slight tanning properties; dispersing agent for vegetable tannins.( CONCENTRATE OF NAPHTHALENE SULPHONIC ACID CONDENSATE & FORMALDEHYDE FREE)

Poptan LF is versatile in application.

  • In dyeing as levelling and lightening agent for anionic dyes, especially suitable for medium to pastel shades.
  • For the fixation of cationic dyes and fatliquors.
  • As dispersing agent for vegetable tannins and in retannages with anionic and nonionic resin tannins. Promotes the penetration and distribution of the tannin while simultaneously improving the dyeability and penetration.


Appearance : Very light, Creamish powder, readily soluble in water.

Chemical Character : Sodium Salt of an aromatic sulphonic acid, anionic.

Active content : 92%

pH of 10% solution : 7-8

Application :

  • Dyeing pale and pastel shades with anionic dyes :

POPTAN LF is used here as a levelling and brightening agent. It is added at the beginning of the dyeing about 10 minutes before the dye is added, either dissolved in a 1:5 ratio or in powder form. It can also be added directly together with the dye, in which case the dyeing is lightened somewhat less.

Amounts : POPTAN LF

Medium to pale shades 0.1-0.5%

Pastel shades 0.5-1.5%

On the shaved weight.

  • Fixation of cationic dyes and fat liquors :

Additional fixation of dyeings or toppings with cationic dyes and cationic fatliquors can be obtained by an aftertreatment with POPTAN LF. It is added to the exhausted dyeing or fatliquoring bath.

Amounts : 0.2-0.5% POPTAN LF on shaved weight.

  • Vegetable tanning :

POPTAN LF disperses the vegetable tannin , largely prevents the formation of undesired sludge and speeds up the through – tanning process.



Amounts in drum tanning : 1%-4% POPTAN LF based on the amount of

Vegetable tannin.

  • In retannages :

POPTAN LF is added as a dispersing and levelling agent to retannages with vegetable tannins as well as anionic and nonionic resin tannins; the penetration of the retanning agents thereby becomes more uniform and the grain remains more elastic.

Amounts : 2-10% poptan LF based on the retanning agent.


Virtually unlimited, if frozen. Ensure it is stored dry and opened containers are tightly closed.


The eyes and respiratory tracts should be protected against contact with the product as it has a strong irritating effect on the mucous membranes.

Without Gurantee


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    Beam House & Pretan. Aux. 

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    Fat Liquors 

    Textile Chemicals 

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