dye|World dye variety

Name:C.I.Food Blue 1:1,C.I.73015:1

Molecular Structure: Indigo class

C.I.Food Blue 1:1,C.I.73015:1,CAS 16521-38-3,422.39,C16H10N2O8S2

Molecular Formula:C₁₆H₁₀N₂O₈S₂

Molecular Weight: 422.39

CAS Registry Number:16521-38-3

Manufacturing Methods : with strong sulfuric acid or low concentration fuming sulfuric acid sulphonated 3H-indol-3-one,2-(1,3-dihydro-3-oxo-2H-indol-2-ylidene)-1,2-dihydro-, and then into aluminum salt deposit color.

Properties and Applications: green light blue. Blue fine powder, odourless. Hardly soluble in water, oil and most solvent, but can be scattered, mixed with water, oil liquid and solid powder. Resistance to light sex, heat resistance, the salt resistance equal ratio of use 3H-indol-3-one,2-(1,3-dihydro-3-oxo-2H-indol-2-ylidene)-1,2-dihydro-. This product is suitable for oil products, powder of solid and colloid water-soluble colorants are difficult to use items shading. The product is made of a certain amount of strong HCL, added with a certain volume of two potassium hydrogen sulfate solution diluted, the maximum absorption wavelength for 612 + 2 nm.

List of Suppliers:

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Indigo Carmine Lake 15009( Anstead International )

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Indigotine Lake ( Warner-Jenkinson Co )

Neelilake Indigo Carmine ( Neelikon Food Dyes and Chemicals Ltd )

San-Ei Gen Food Blue No. 2 Aluminium Lak ( Kaseihin Kogyo Kyokai )

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Simlake Indigo Carmine ( Simpsons (UK) Ltd )

Usalake FD&C Blue No 2( Warner-Jenkinson Co )