• Source: Chrysoine resorcinol

Chrysoine resorcinol is a synthetic azo dye which was formerly used as a food additive. In Europe, it was banned as a food additive in 1977. In the US, it was banned in 1988.
Chrysoine resorcinol can be used as a pH indicator with a color change between pH 11 and pH 12.7.
In colorimetry, it has an absorption maximum of 387 nm.




Preparation


Acid orange 6 can be synthesised via the azo coupling of sulfanilic acid and resorcinol,




Notes






External links


Data at inchem.org
MSDS at Fischer Scientific

Kata Kunci Pencarian:

• Chrysoine resorcinol
• Sulfanilic acid
• International Numbering System for Food Additives
• List of dyes
• List of food additives