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Direct Black 56 Dyes

Product info Type: Direct Dyes, Direct Black Dyes Product Name: Direct Black 56, Fast Grey LBN 200% CAS No.:8003-57-4 EINECS: NO Molecular Formula:C36H22N7Na3O10S3 Product Description
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Product Introduction

Product info


Type: Direct Dyes, Direct Black Dyes

Product Name: Direct Black 56, Fast Grey LBN 200%
CAS No.:8003-57-4
EINECS: NO
Molecular Formula:C36H22N7Na3O10S3


Product Description


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Formula

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Chmeical Properties


Gray powder. The aqueous solution is dark purple and insoluble in ethanol. Its aqueous solution is added with concentrated hydrochloric acid to produce dark blue precipitation. The addition of a strong base produces a dark purple precipitate. In concentrated sulfuric acid, it is greenish grayish blue, and purple after dilution. Slightly sensitive to hard water.


Application


Grey LBN is mainly used for dyeing cotton, hemp and viscose fabrics, as well as for dyeing silk fabrics, leather and paper pulp.

It is mainly used for dyeing cellulose fiber fabrics such as cotton, hemp, viscose, etc. It can also be used for dyeing silk fabrics, leather and paper pulp.


FAQ:1.Are you a trade company or a manufacturer?We are a munufacturer with more than 15 years' experience.



2.Do you have certificates? And what certificates are there? Yes, We have OEKO-TEX, BLUESIGN certificates.


3.Can you provide free samples for test?

Yes, of course.We can provide 20g free samples for each item.



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