Product Name: Basic Brown 4
CAS No.: 5421-6-9
Other Names: Bismark Brown R
MF: C21H24N8
Molecular Weight: 388.47 gm/mol
Place of Origin: Gujarat, India
Type: Basic Dye
Usage: Ink Dyestuffs, Leather Dyestuffs, Paper Dyestuffs, Textile Dyestuffs
Brand Name: Shramik Chemicals
Model Number: SC/202
Appearance: Red Light Brown Powder
Sample: Free
C.I.NO: 21010
H. S. Code: 32041392
Purity: 100%
CAS No.: 2611-82-7
Other Names: Scarlet 3R
MF: C20H11N2Na3O10S3
Place of Origin: Gujarat, India
Type: Acid Dye
Usage: Ink Dyestuffs, Leather Dyestuffs, Paper Dyestuffs, Textile Dyestuffs, Wool Dyestuffs
Brand Name: Shramik Chemicals
Model Number: SC/103
Appearance: Bright Red Powder
Sample: Free
C.I.NO: 16255
H. S. Code: 32041213
Purity: 140% to 50%
Acid dyes are used to color silk, wool, feathers, other protein fibers nylons, and paper and nothing does it better! Extremely brilliant and colorfast, Acid Dyes are highly concentrated, powdered hot water dyes that produce level, uniform color during immersion dyeing. They exhaust well and wonâ??t bleed or fade with washing. Of all the colorants in the world, acid dyes are known to produce the most luscious colors of all, and is unsurpassed for quality, intensity and consistency.
Product Name: Acid Red 97
CAS No.: 10169-02-5
Other Names: Acid Red GG
MF: C32H20N4Na2O8S2
Place of Origin: Gujarat, India
Type: Acid Dye
Usage: Leather Dyestuffs, Paper Dyestuffs, Textile Dyestuffs, Wool Dyestuffs
Brand Name: Shramik Chemicals
Model Number: SC/105
Appearance: Red Powder
Sample: Free
C.I.NO: 22890
H. S. Code: 32041213
Purity: 100%
Product Name: Basic Brown 1
CAS No.: 1052-36-6
Other Names: Bismark Brown G/Y
MF: C18H18N8
Molecular Weight: 346.39 gm/mol
Place of Origin: Gujarat, India
Type: Basic Dye
Usage: Ink Dyestuffs, Leather Dyestuffs, Paper Dyestuffs, Textile Dyestuffs
Brand Name: Shramik Chemicals
Model Number: SC/203
Appearance: Red Light Brown Powder
Sample: Free
C.I.NO: 21000
H. S. Code: 32041392
Purity: 100%
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1.Disperse dyes are nonionic dyes. So they are free from ionizing group.
2.They are ready made dyes and are insoluble in water or have very low water solubility.
3.They are organic coloring substances which are suitable for dyeing hydrophobic fibers.
4.Disperse dyes are used for dyeing man made cellulose ester and synthetic fibers specially acetate and polyester fibers and sometimes nylon and acrylic fibers.
5.Carrier or dispersing agents are required for dyeing with disperse dyes.
6.Disperse dyes have fair to good light fastness with rating about 4-5.
7.The wash fastness of these dyes is moderate to good with rating about 3-4.
8.Of all dyestuffs disperse dyes are of smallest molecular size.
9.Generally disperse dyes are derivatives of azo, anthroquinone, nitro and quinine groups.
10.They do not undergo any chemical change during dyeing.
11.In presence of nitrous oxide, textile materials dyed with certain blue and violet disperse dyes with an anthraquinone structure will fade. This is called gas fading of disperse dyes which is a defect of this dye.
Acid dyes are highly water soluble, and have better light fastness than basic dyes. The textile acid dyes are effective for protein fibers such as silk, wool, nylon and modified acrylics. They contain sulphonic acid groups, which are usually present as sodium sulphonate salts. These increase solubility in water, and give the dye molecules a negative charge. In an acidic solution, the -NH2 functionalities of the fibres are protonated to give a positive charge: -NH3+. This charge interacts with the negative dye charge, allowing the formation of ionic interactions. As well as this, Van-der-Waals bonds, dipolar bonds and hydrogen bonds are formed between dye and fibre. As a group, acid dyes can be divided into two sub-groups: acid-leveling or acid-milling.
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