Aluminium, 7-hydroxy-8-[(4-sulfo-1-naphthalenyl)azo]-1,3-naphthalenedisulfonic acid complex
Aluminium, 7-hydroxy-8-[(4-sulfo-1-naphthalenyl)azo]-1,3-naphthalenedisulfonic acid complex Basic information
- Product Name:
- Aluminium, 7-hydroxy-8-[(4-sulfo-1-naphthalenyl)azo]-1,3-naphthalenedisulfonic acid complex
- Synonyms:
-
- aluminum,(8Z)-7-oxo-8-[(4-sulfonatonaphthalen-1-yl)hydrazinylidene]naphthalene-1,3-disulfonate
- Aluminium, 7-hydroxy-8-[(4-sulfo-1-naphthalenyl)azo]-1,3-naphthalenedisulfonic acid complex
- Food Red 7:1
- C.I. Food Red 7:1
- C.I.Food Red 7:1:C.I.16255:1
- CAS:
- 12227-64-4
- MF:
- C20H11AlN2O10S3
- MW:
- 562.485278
- EINECS:
- 235-438-3
- Mol File:
- 12227-64-4.mol
Aluminium, 7-hydroxy-8-[(4-sulfo-1-naphthalenyl)azo]-1,3-naphthalenedisulfonic acid complex Chemical Properties
- Cosmetics Ingredients Functions
- HAIR DYEING
Aluminium, 7-hydroxy-8-[(4-sulfo-1-naphthalenyl)azo]-1,3-naphthalenedisulfonic acid complex Usage And Synthesis
Description
Acid Red 18 Aluminum Lake is an insoluble pigment composed of the aluminum salt of Acid Red 18 extended on an appropriate substrate.
Preparation
4-Hydroxynaphthalene-1-sulfonic acid diazo, and 7-Hydroxynaphthalene-1,3-disulfonic acid coupling, and then into aluminum salt deposit color.
Properties and Applications
red. Red fine powder, odourless. Hardly soluble in water, oil and most solvent, but can be scattered, mixed with water, oil and other liquid and solid powder. Resistance to light sex, salt tolerance, good sex, heat resistance than C.I. Food Red 7 a bit better. When using the use effect of the acid and alkali through influence. This product is particularly suitable for oil products, powder solid and colloid water-soluble colorants difficult to chromatic 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 508 + 2 nm.