Dyes

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Dyes

Dyes are soluble colorants used to impart vibrant and uniform coloration to textiles, leather, paper, plastics, inks, and food products. They penetrate target substrates at molecular level, offering strong tinting strength, brightness, and wide shade availability. Modern dye formulations emphasize fastness properties-such as resistance to washing, light, and heat-while supporting eco-friendly and low-impact processing requirements.

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.

7-Hydroxy-8-[[4'-[(4-Hydroxyphenyl)Azo][1,1'-Biphenyl]-4-Yl]Azo]Naphthalene-1,3-Disulphonic Acid CAS NO 117-33-9

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CAS No.:117-33-9

Grade:Pharmacy Grade

Content:99.0%

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o-Dianisidine CAS NO 119-90-4

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CAS No.:119-90-4

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Copper, Diazotized 2-Methoxy-4-Nitrobenzenamine-4-[(8-Hydroxy-6-Sulfo-2-Naphthalenyl)Amino]Benzoic Acid Coupling Products Complexes CAS NO 1325-32-2

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CAS No.:1325-32-2

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Stilbene Yellow CAS NO 1325-37-7

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CAS No.:1325-37-7

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Direct Orange 39 CAS NO 1325-54-8

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CAS No.:1325-54-8

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Sirius Supra Scarlet Gg CAS NO 1325-63-9

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CAS No.:1325-63-9

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Direct Blue 86 CAS NO 1330-38-7

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CAS No.:1330-38-7

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Black 1 CAS NO 1341-93-1

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CAS No.:1341-93-1

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Content:99.0%

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Neutral Dyes

Neutral dyes are specialized dye classes formulated to exhibit balanced ionic behavior, offering improved compatibility with both hydrophobic and hydrophilic substrates. They produce even, smooth shades with moderate to good fastness properties. Neutral dyes are used in applications where neither strongly acidic nor strongly basic dye systems are suitable, making them valuable for blended fibers, leather finishing, paper coloration, and certain plastics. Their controlled charge characteristics help minimize staining irregularities and enhance leveling on difficult substrates. Although not as widely used as other dye categories, neutral dyes fill an important niche in achieving uniform coloration across multi-component materials.

Neutral Black Brl CAS NO 12219-14-6

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CAS No.:12219-14-6

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Content:99.90%

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Neutral Brown Rl CAS NO 12238-94-7

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CAS No.:12238-94-7

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5,6-Dichloro-1-Ethyl-3-Sulfobutyl-2-(3-(5,6-Dichloro-1-Ethyl-3-Sulfobutyl Benzimidazolinylidene-1-Propenyl) Benzimidazolium Hydroxide, Inner Salt,Sodium Salt CAS NO 18462-64-1

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CAS No.:18462-64-1

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Chromat, Bis(3-Hydroxy-4-((2-Hydroxy-3,5-Dinitrophenyl)Azo)-n-Phenyl-2-Naphthalencarboxamidato(2-))-, Ammonium CAS NO 109125-51-1

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CAS No.:109125-51-1

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Chromate(5-), Bis[4-Hydroxy-6-[(2-Hydroxy- 5-Methylphenyl)Azo]-3-[(2-Hydroxy-3-Nitro-5-Sulfophenyl )Azo]-2-Naphthalenesulfonato(4-)]-, Potassium Sodium CAS NO 114886-93-0

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CAS No.:114886-93-0

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Ferrate(1-), Bis[4-[(5-Chloro-2-Hydroxyphenyl) Azo]-3-Hydroxy-n-Phenyl-2-Naphthalene-Carboxamidato(2-)]-, Ammonium Sodium Salt CAS NO 115706-73-5

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CAS No.:115706-73-5

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5,5'-Dimethyl-9-Ethyl-3-(2-Hydroxyethyl)-3'-(3-Sulfatobutyl)Thiacarbocyanine Betaine CAS NO 117898-57-4

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CAS No.:117898-57-4

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Chromate(3-), Bis7-(Aminohydroxyphenyl)Azo-3-5-(Aminosulfonyl)-2-(Hydroxy-.Kappa.O)Phenylazo-.Kappa.N1-4-(Hydroxy-.Kappa.O)-2-Naphthalenesulfonato(3-)-, Trisodium CAS NO 118716-62-4

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CAS No.:118716-62-4

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Solvent Dyes

Solvent dyes are nonionic, water-insoluble dyes that dissolve readily in organic solvents, oils, waxes, plastics, and hydrocarbons. They produce transparent, vivid shades with excellent migration and light fastness. Solvent dyes are widely used in coloring plastics (such as PVC, PS, PMMA, PET), automotive coatings, printing inks, candles, lubricants, and petroleum products. Their molecular structure allows strong solubility in nonpolar media, enabling uniform coloration without precipitation. Many solvent dyes exhibit thermal stability suitable for high-temperature polymer processing. Their brilliance and compatibility with organic systems make them essential for achieving rich, glossy finishes in industrial and decorative applications.