Chemical Properties
Red powder
Usage
Color additive in foods, drugs and cosmetics. It is used as a food dye and has the E number E129. The study found increased levels of hyperactivity and attention deficit hyperactivity disorder and low
er IQs were observed in children consuming the chemicals. It is banned in Denmark, Belgium, France, Switzerland, Sweden.
Description
FD & C Red No. 40 is principally the disodium salt of 6-hydroxy5-[(2-methoxy-5-methyl-4-sulfophenyl)azo]2-napthalenesulfonic acid.
The colorant is a red powder that dissolves in water to give a solution red at neutrality and in acid and dark red in base. It is slightly soluble in 95% ethanol.
FD & C Red No. 40 is used in gelatins, puddings, custards, alcoholic and nonalcoholic beveraes, sauces, toppings, candy sugars, frostings, fruits, juices, dairy products, bakery products, jams, jellies, condiments, meat, and poultry. FD & C Red No. 40 is also used for coloring drugs and cosmetics.1
.
Definition
ChEBI: Allura red AC is a naphthalenesulfonic acid.
Preparation
4-Amino-5-methoxy-2-methylbenzenesulfonic acid diazo, and 6-Hydroxynaphthalene-2-sulfonic acid?coupling.
Flammability and Explosibility
Nonflammable
Properties and Applications
Yellow light red to red. Deep red powder, odourless. Soluble in water, 0.1% water solution is what with red, can dissolve in glycerin and propylene glycol, slightly soluble in ethanol, insoluble in grease. Has the characteristics of acid dyes. In 100ml 0.2 mol/ L ammonium acetate solution contains 0.001g samples, the maximum absorption wavelength for 499 + 2 nm. Resistance to light sex, heat resistance, the salt resistance, resistance to acidic sex is strong. To such as citric acid, tartaric acid stability. Good alkali resistance and oxidizing is good, the sulfur dioxide well tolerated.
