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Jktan NG - liq. / Jktan NG Powder is based on aromatic sulphonic acids and aliphatic dicarboxylic acids


Light fastness


Very good
Yellowing : Leathers and finished products are stable to storage.
Astringency : Low, thus excellent grain smoothness and fineness.
Stability to electrolytes : Very good, suitable for all procedures, e.g. in compact methods and chromium baths.
Effect on leather colour : Slight shade weakening.
Leveling effect : Good dyeability.
Electrolyte content : Very low, thus low effluent pollution.
Storage stability : 1 year (at room temperature) Highly concentrated, technical-grade liquid products can form a slight sediment.

The two products differ from one another only in the form they are delivered and in their concentration and therefore only Jktan NG is referred to in following text.

Benefits : Jktan is a lightfast neutralizing agent with mellow retanning effect and high affinity for acids.  It is noted for a mild, penetrating deacidifying effect.

Jktan NG does not loosen the grain during neutralization and no coarsening of the grain occurs during subsequent application of vegetable and synthetic tanning agents.

Jktan NG helps to disperse the retanning agent and thus distribute it more evenly in the leather.

Jktan NG has a leveling action with only minimal shade-weakening effect.  With its anionic charge and its buffer effect, Jktan NG improves the penetration of anionic dyes.

Owning to its acid-binding properties, Jktan NG has a basifying effect on chromium slats.  With its high buffer properties, Jktan NG can be used without risk in chromium baths.

Application : In general, 1-4% Jktan NG (calculated on the shaved weight) is applied in the neutralizing stage Jktan NG can be applied in combination with common neutralizing agents like sodium bicarbonate, when higher pH values are required.  In Powder form, the quantity of Jktan NG used will be reduced substantially.


Product Specification

Test Point Requirement / Tolerance Test Method
Trade Form Liquid Visual
Colour/Appearance Reddish brown Visual
pH Value (10 g/l) 6.3 7.2 Glass electrode DIN 19268
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