Indigo carmine, or 5,5-indigodisulfonic acid sodium salt, is an organic salt derived from indigo by aromatic sulfonation, which renders the compound soluble in water. It is approved for use as a food colorant in the U.S and E.U. It has the E number E132. It is also a pH indicator. Indigo carmine in a 0.2% aqueous solution is blue at pH 11.4 and yellow at 13.0. Indigo carmine is also a redox indicator, turning yellow upon reduction. Another use is as a dissolved ozone indicator through the conversion to isatin-5-sulfonic acid. This reaction has been shown not to be specific to ozone, however: it also detects superoxide, an important distinction in cell physiology. It is also used as a dye in the manufacturing of capsules. E number: E132 (colors) UNII: D3741U8K7L CAS Number: 860-22-0
Patent Blue V, also called Food Blue 5, Sulphan Blue, Acid Blue 3, L-Blau 3, C-Blau 20, Patentblau V, Sky Blue, or C.I. 42051, is a sky blue synthetic triphenylmethane dye used as a food coloring.[1] As a food additive, it has E number E131. It is a sodium or calcium salt of [4-(�±-(4-diethylaminophenyl)-5-hydroxy- 2,4-disulfophenylmethylidene)-2,5-cyclohexadien-1-ylidene] diethylammonium hydroxide inner salt. In medicine, Patent Blue V is used in lymphangiography and sentinel node biopsy as a dye to color lymph vessels. It is also used in dental disclosing tablets as a stain to show dental plaque on teeth. E number: E131 (colours) EC Number: 243-654-4; Calcium salt: 222-573... CAS Number: 3536-49-0
Allura Red AC is a red azo dye that goes by several names, including FD&C Red 40. It is used as a food dye and has the E number E129. Allura Red AC is also known as FD&C Red 40 It is usually supplied as its red sodium salt, but can also be used as the calcium and potassium salts. These salts are soluble in water. In solution, its maximum absorbance lies at about 504 nm. Orange-red colour used in sweets, drinks and condiments, medications and cosmetics, A red synthetic azo dye introduced in the early eighties to replace Amaranth, E123, in the United States of America where E123 is prohibited E number: E129 (colors) Chemical formula: C18H14N2Na2O8S2 CAS Number: 25956-17-6
Amaranth, FD&C Red No. 2, E123, C.I. Food Red 9, Acid Red 27, Azorubin S, or C.I. 16185 is a modified red azo dye used as a food dye and to color cosmetics. The name was taken from amaranth grain, a plant distinguished by its red color and edible protein-rich seeds. Amaranth is an anionic dye. It can be applied to natural and synthetic fibers, leather, paper, and phenol-formaldehyde resins. As a food additive, it has E number E123. Amaranth usually comes as a trisodium salt. It has the appearance of reddish-brown, dark red to purple water-soluble powder that decomposes at 120 �°C without melting. Its water solution has an absorption maximum of about 520 nm. Like all azo dyes, Amaranth was, during the middle of the 20th century, made from coal tar; modern synthetics are more likely to be made from petroleum byproducts. E number: E123 (colours) EC Number: 213-022-2 CAS Number: 915-67-3
Sunset Yellow FCF (also known as Orange Yellow S, or C.I. 15985) is a petroleum-derived orange azo dye with a pH-dependent maximum absorption at about 480 nm at pH 1 and 443 nm at pH 13 with a shoulder at 500 nm. When added to foods sold in the United States it is known as FD&C Yellow 6; when sold in Europe, it is denoted by E Number E110. Uses: Sunset Yellow is used in foods, cosmetics, and drugs. Sunset Yellow FCF is used as an orange or yellow-orange dye For example, it is used in candy, desserts, snacks, sauces, and preserved fruits. Sunset Yellow is often used in conjunction with E123, amaranth, to produce a brown coloring in both chocolates and caramel. E number: E110 (colors) Chemical formula: C16H10N2Na2O7S2 CAS Number: 2783-94-0
Tartrazine is a synthetic lemon yellow azo dye primarily used as a food coloring. It is also known as E number E102, C.I. 19140, FD&C Yellow 5, Yellow 5 Lake, Acid Yellow 23, Food Yellow 4, and trisodium 1-(4-sulfonatophenyl)-4-(4-sulfonatophenylazo)-5-pyrazolone-3-carboxylate) Tartrazine is a commonly used color all over the world, mainly for yellow, and can also be used with Brilliant Blue FCF (FD&C Blue 1, E133) or Green S (E142) to produce various green shades. E number: E102 (colors) Solubility in water: 20 g/100 mL CAS Number: 1934-21-0 Solubility: 18 g/100 mL in glycerol, negligible
Sunset Yellow Is A Azo Dye That Can Be Used In A Food.
Acid green 111 for wool, nylon dyeing, also suitable for colouring leather. End Use:-Inks Textiles Leather Synonyms:-Acid Dark Green 2BS,Acid Green BS
Apply to wool and poly-amide fiber dyeing, also can be used for leather colour. End Use:-Textile Leather Ink Synonyms:-Acid Green NGB
This product is suitable for the wool, silk, wool blended fabric, poly-amide fiber of dyeing and printing, also suitable for leather and paper colour. End Use:-Textile Leather Ink Synonyms:-Acid Dark Green 6B,Acid Green B
Mainly used in solar salt industry and wool, silk and nylon fabric dyeing and printing, can also be used for leather dyeing. End Use: Textile Leather Ink Synonyms:Napthol Green B,Acid Green PXC
Acid Blue 193 Used for wool, silk, poly-amide fiber dyeing, also can be used for leather dyeing. End Use:-Textile Ink Leather Synonyms:-Acid Navy Blue MTR,Neutral Blue M-TR,Neutral Blue S-TR,Neutral Navy Blue 2BL
Acid Red 357 used for wool, silk, and poly-amide fiber fabric dyeing and printing. End Use:-Inks Textiles Leather Synonyms:-Acidol Scarlet M-L,Airedale Fast Red,Dorolan Scarlet ML
Acid Orange 142 is Red orange. Applicable in rapid dyeing equipment dyeing wool, 80-90, PH 3.5 ~ 4.0, dyeing time can be reduced. End Use: Textile Leather Ink synonyms:-Acidol Orange M-RL Airedale Fast Orange Dorolan Orange MRL
Acid orange 61 used for wool, silk, and poly-amide fiber dyeing, etc. End Use :-Coatings Textiles Leather Synonyms:-Fast Orange 2GC,Orange 3J,Orange 2G
Acid Yellow 194 used for wool, silk, and poly-amide fiber dyeing, also can be used for leather colour. End Use;- Textiles Leather Synonyms:-Aadol Yellow M-3RL Dorolan Yellow M3RL
Acid Yellow 23 Used for wool, silk, vinegar, poly-amide fiber dyeing and printing directly. The Barium salt also used for paper, leather, soap, drug, plastic, aluminium surface shading, can also be used in cosmetics and food colouring. End Use: Textile Leather Ink Synonymes:-Acid Yellow N,Acid Tartrazine
Acid Brown 434 used for wool, nylon, silk, paper, leather, Ink, etc. End Use:Inks Textiles Leather Synonyms :-Acid Brown RL;Everlan Brown ERL
Acid Brown 432 used for wool, silk printing, and dyeing, also suitable for leather shading. End Use :Textiles Leather Synonyms: Acid Complex Brown M2R,Dermafix Brown R
A yellowish brown dye recommended for all types of aniline leather. But the product is used for shoe uppers, upholstery leather and leather garments. Acid Brown 425 used for wool, nylon, silk, paper, leather, ink, etc. End Use:-Inks Leather Wool Polyamide Fiber Silk Synonyms:Acid Havana 2RL
