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.

4-Amino-6-[(4-aminophenyl)azo]-3-[[4'-[[5-[(4-aminophenyl)azo]-2,4-diaminophenyl]azo][1,1'-biphenyl]-4-yl]azo]-5-hydroxynaphthalene-2,7-disulfonic acid disodium salt CAS NO 6473-08-1

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CAS No.:6473-08-1

Grade:Pharmacy Grade

Content:99.90%

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7-[(2,4-Diaminophenyl)azo]-7'-[[4-[[4-[(2,4-diaminophenyl)azo]phenyl]amino]-3-sodiosulfophenyl]azo]-1,8'-dihydroxy[2,2'-azobisnaphthalene]-3,6'-disulfonic acid disodium salt CAS NO 6473-14-9

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CAS No.:6473-14-9

Grade:Pharmacy Grade

Content:99.90%

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6-[(2,4-Diaminophenyl)azo]-3-[[4'-[[2,4-diamino-5-[(4-sodiosulfophenyl)azo]phenyl]azo]-3'-sodiosulfo[1,1'-biphenyl]-4-yl]azo]-4-hydroxynaphthalene-2-sulfonic acid sodium salt CAS NO 6546-67-4

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CAS No.:6546-67-4

Grade:Pharmacy Grade

Content:99.90%

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2-Hydroxy-5-[[4-[[6-hydroxy-2-[3-[(1-hydroxy-4-sodiosulfo-2-naphthalenyl)azo]phenyl]-8-sodiosulfo-1H-naphth[1,2-d]imidazol-7-yl]azo]benzoyl]amino]-3-methylbenzoic acid sodium salt CAS NO 6598-53-4

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CAS No.:6598-53-4

Grade:Pharmacy Grade

Content:99.90%

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7-[[4-[(4-Amino-3-sodiosulfophenyl)azo]-2-ethoxy-1-naphthalenyl]azo]-6-hydroxy-2-[3-[(2,4-dihydroxyphenyl)azo]phenyl]-1H-naphth[1,2-d]imidazole-8-sulfonic acid sodium salt CAS NO 6598-60-3

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CAS No.:6598-60-3

Grade:Pharmacy Grade

Content:99.90%

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7-Amino-3-[[4'-[[6-amino-5-[(4-aminophenyl)azo]-1-hydroxy-3-sodiosulfo-2-naphthalenyl]azo][1,1'-biphenyl]-4-yl]azo]-8-[(4-amino-2-sodiosulfophenyl)azo]-4-hydroxynaphthalene-2-sulfonic acid sodium salt CAS NO 6661-39-8

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CAS No.:6661-39-8

Grade:Pharmacy Grade

Content:99.90%

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tetrasodium 3-[[4-[[[[4-[(2-amino-8-hydroxy-6-sulphonato-1-naphthyl)azo]-3-sulphonatophenyl]amino]carbonyl]amino]-2-sulphonatophenyl]azo]-4-hydroxy-7-(phenylamino)naphthalene-2-sulphonate CAS NO 6771-82-0

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CAS No.:6771-82-0

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Content:99.90%

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N-[5-[(7-Amino-1-hydroxy-3-sodiosulfo-2-naphthalenyl)azo]-2-[[4'-[(7-amino-1-hydroxy-3-sodiosulfo-2-naphthalenyl)azo]-3,3'-dimethyl[1,1'-biphenyl]-4-yl]azo]phenyl]oxamidic acid sodium salt CAS NO 6771-91-1

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CAS No.:6771-91-1

Grade:Pharmacy Grade

Content:99.90%

Packaging:Customizable

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