3804000090 Calcium Lignosulphonate Brown Powder Tanning In Leather

Calcium Lignosulphonate is used in leather tanning HS COAD 3804000090

Calcium Lignosulphonate:

Direct application of lignosulfonate to leather tanning is not effective. Chemically modified lignesulfonates with appropriate particle radius distribution and resulting in better soluble collagen reacting with functional group reactive groups can be used for leather tanning or retanning. The suitable modified sulfonate (re) tanning agent can produce leather properties to meet the market demand and help to reduce the environmental pollution caused by chromium ions in tannery wastewater.

The main improvements of the method are: lignosulfonic acid and phenol, formaldehyde condensates: Lignosulfonic acid and dihydroxymethylurea-phenol sulfonic acid condensates; Condensation of lignosulfonic acid and dihydroxydiphenyl sulfone; Lignic acid with dicyandiamide, formaldehyde condensation; After condensation of sulphonated phenolic aldehyde, aluminum or chromium salts of lignosulfonic acid and chromium compounds are formed. High quality sulfonic acid resin can also be dried to improve the drying power and dispersion of the product spray.

Package and Storage:
(1)The product comes in the form of powdery.The powdery form is packed in PE/PP woven bags, 25kg/package; Jumbo bag.
(2) keep away from moisture.
(3) The product is non-flammable, non-toxic, non-explosive, and can be stored for a long time.

FAQ:
Q1. Which payment is available for your company?
Re: T/T, L/C, D/A, D/P, Western Union, MoneyGram

Q2. How can I get the sample?
Re: We provide you free sample. But you should pay for the postage. When we have a formal transaction, we will refund the postage of this sample.

Q3. How can you guarantee the goods you offer is qualified?
Re: We can provide sample, COA, MSDS and etc to help you insure the quality. And we promise every batch of product will be tested in the factory, and they can only leave the factory after the quality is qualified.

Q4. How can I get your best price?
Re: We will provide you timely market information and the fluctuation trends of raw material to help you determine the most appropriate time for an ord

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