Compositions
Mixture of condensation product of naphthalene and organic salt.
Properties
It has excellent light-fastness and it could neutralize mildly and deeply.
The grain is tight and smooth while it accelerate penetration of syntan and vegetable tannin in following process.
It helps tannin and dyestuff to disperse uniformly and also could be used as a basification without any risk.
Package and Storage
Paper bag with 20kgs;
Storing condition: cool and dry;
Shelf-life: 18months.
Applications
It could be used in neutralizing process and suitable for all kinds of leathers.
It is also suitable for producing white leather as its excellent light-fastness.
Usually the recommended dosage is 1-3%.（% based on shaved weight）
You can add it together with sodium format, sodium bicarbonate and ammonium bicarbonate while high PH value is need.
While used with syntan, filling tannin and vegetable tannin in filling process, the suggested dosage is 2-3%.
In dyeing process, we can add 1-2% into drum run for 10-15mins, and then add the dyestuffs.
