CHEMICALCHARACTER: Basic Chromium Sulphate
Ph of 6% Solution: 3.0±0.2
chem-tan-basic chrome sulfate is a powder easily soluble in cold water and highly soluble in hot water in the proportion of 1:2.
It contains compatible additives to help fast penetration and better exhaustion. The product is made in such a way as to ensure a high degree of solubility in cold water. The tanner has the obvious advantage of controlling his masking by the addition of suitable masking agents. The basicity variation from batch to batch is very minimal and one can be assured of a starting material of standard basicity.
Because of the ease of solubility, this can be used in dry tannage or floatless tannage without any problem. The product could also be dissolved in water in the proportion of 1:2 and used for tannages where definite floats are employed. Since they are not masked, the tanner can add the requisite amount of masking agent which has the advantage of controlled and uniform dyeing at the later stage. As such, when used, it gives an optimum bluish green color and uniform tanning is achieved.
method of tannage
Starting material: Pickled pelt
Flood: 60% Water 1hr.60%水
Basify: 1.5-2 Basifying agent in 20% water.
(added in 3 feeds at intervals of 15mts. Run for 1/2 hr. after last addition)
Final Ph: 3.8-4.0 PH：3.8-4.0
10-12% CHEM-TAN-BAGS added in three feed sat 30mts. Intervals;
20-30% Water run for finally 1 hr.
1.5-2% Basifying Salt in 20%Water (added in feeds at intervals of 15mts. Run for 1/2 hr. after last addition)
1. It is better to add 0.-0.2% of preservation at the end of Chrome Tanning, when storage is contemplated.
2. The powder should be kept well packed without exposure to air as it is highly hygroscopic.
PACKING: Available in 25/50kgs. Packings
Packed in kraft Paper Bags/HDPE Woven bags with an additional inner polythene liner.
(The above procedure outlined is for guidance only and is without obligation)
Contact Name: Andy
Company Name: Hongxinweiye (Tianjin) Chemicals Co., Ltd
Street Address: 1405-A, Creative
Center (Jinnan), Binhai New Area,
Member name: supplychemical
Member Since: 08 December 2009
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