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Direct Black Dyes

Product info Type: Direct Dyes, Direct Black Dyes Product Name: Direct Black 17, Grey D 100% CAS No.:2945-96-2 EINECS: 219-810-2 Molecular Formula:C24H21N6NAO5S Product Description
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Product Introduction

Product info

Type: Direct Dyes, Direct Black Dyes

Product Name: Direct Black 17, Grey D 100%
CAS No.:2945-96-2
EINECS: 220-955-9
Molecular Formula:C24H21N6NAO5S

Molecular Weight: 530.531

Product Description

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Chemical Structure

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Chemical Properities

Direct dyes with sulfonic acid (-so H) or carboxyl (-cooh) and other water-soluble groups molecular structure arranged in a straight line. The aromatic ring structure is in the same plane, so the direct dyes have a greater affinity for cellulose fiber, direct dyeing in the neutral medium, as long as the dye dissolved in dry water, can be dyed.


Application

Direct grey D is widely used for dyeing cotton and viscose fabrics, and also for dyeing and printing silk fabrics. It can get blue, red, grey to green, black, deep and even color. It can also be used with yellow, red, blue, brown and other dyes.It is mainly used for dyeing cellulose fiber fabrics such as cotton, hemp and viscose. It can also be used for dyeing silk, polyamide and its blended fabrics. It can also be used for printing viscose and silk fabrics.After dyeing cotton and viscose fabrics directly with black 17, fixing agent Y or FIXING agent M is usually used, as well as urea formaldehyde resin finishing. After fixing agent Y treatment, the color light is reddish; After fixing agent M treatment, the color light turned dark, after urea formaldehyde resin finishing, the color light basically unchanged.Green light gray to green and black. Black powder. Soluble in water for violet black, 80 ℃ in the solubility of 20 g/L, soluble in ethanol gray light purple. The strong sulfuric acid is a deep blue in green, orange brown after diluted precipitation. The dye solution to join strong hydrochloric acid for dark brown, have precipitation;  Adding concentrated sodium hydroxide solution in gray light purple precipitate. Cellulose fiber of dyeing, the dye absorption rate as well, in 40 ~ 80 ℃ maximum of affinity, discharge the gender is good. Used for cotton or viscose dyeing, is not used for printing. Can also be used for silk, PVA, polyamide fiber and its blended fabric dyeing.

FAQ

1.What is the MOQ for your products?

 The MOQ for our products is 25kg.

2.What packaging methods are available for the product?

Our packaging methods include 25kg iron drum, 25kg woven bag, 25kg carton.

3.What payment options are available?

 We have payment methods of L/C, Western Union, D/P, D/A, T/T, MoneyGram, you

can choose any.

 

Hot Tags: Vat Violet 13 Dyestuff, suppliers, manufacturers, factory, low price


Hot Tags: direct black dyes, suppliers, manufacturers, factory, low price
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