Direct Dyes

Dyes

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Direct Dyes

Direct dyes are water-soluble anionic dyes capable of coloring cellulose fibers such as cotton, rayon, and paper without requiring a mordant. Their planar molecular structure allows them to align and bond with cellulose through hydrogen bonding and Van der Waals forces. Direct dyes are valued for their simplicity of application, low cost, and broad shade range, including yellows, reds, blues, and blacks. While their wash fastness is moderate compared to reactive or vat dyes, their ease of use makes them suitable for household textiles, decorative fabrics, and low-cost apparel. Various after-treatment agents may be used to improve fastness when needed. Their role in paper dyeing and specialty applications remains significant.

Direct Black 154 CAS NO 37372-50-2

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CAS No.:37372-50-2

Grade:Pharmacy Grade

Content:99.90%

Packaging:Customizable

Disodium 5-[[4-[Bis(2-Hydroxyethyl)Amino]Phenyl]Azo]-8-[(4-Sulphonatophenyl)Azo]Naphthalene-2-Sulphonate CAS NO 38124-99-1

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CAS No.:38124-99-1

Grade:Pharmacy Grade

Content:99.90%

Packaging:Customizable

Disodium 4-Amino-3-[[4'-[(2,4-Diaminophenyl)Azo]-3,3'-Dimethoxy[1,1'-Biphenyl]-4-Yl]Azo]-5-Hydroxy-6-(Phenylazo)Naphthalene-2,7-Disulphonate CAS NO 38449-92-2

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CAS No.:38449-92-2

Grade:Pharmacy Grade

Content:99.90%

Packaging:Customizable

Trisodium 2-[2-(4-Nitro-2-Sulphonatophenyl)Vinyl]-5-[[4-[(4-Sulphonatophenyl)Azo]Phenyl]-Nno-Azoxy]Benzenesulphonate CAS NO 39363-31-0

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CAS No.:39363-31-0

Grade:Pharmacy Grade

Content:99.90%

Packaging:Customizable

Direct Black 38 CAS NO 381937-37-7

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CAS No.:381937-37-7

Grade:Pharmacy Grade

Content:99.90%

Packaging:Customizable

Tetrasodium 3,3'-[(3,3'-Dimethoxy[1,1'-Biphenyl]-4,4'-Diyl)Bis(Azo)]Bis[4,5-Dihydroxynaphthalene-2,7-Disulphonate] CAS NO 4198-19-0

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CAS No.:4198-19-0

Grade:Pharmacy Grade

Content:99.90%

Packaging:Customizable

Diamine Green B CAS NO 4335-09-5

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CAS No.:4335-09-5

Grade:Pharmacy Grade

Content:99.90%

Packaging:Customizable

Direct Blue 71 CAS NO 4399-55-7

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CAS No.:4399-55-7

Grade:Pharmacy Grade

Content:99.90%

Packaging:Customizable

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