Allura Red

Allura Red AC

Allura Red AC is an organic compound classified as an azo compound and a disulfonate. Also known as FD&C Red 40 or E129, it is a red dye commonly used in food. 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.

Red

Red is the color at the long wavelength end of the visible spectrum of light, next to orange and opposite violet. It has a dominant wavelength of approximately 625–750 nanometers. It is a primary color in the RGB color model and a secondary color in the CMYK color model, and is the complementary color of cyan. Reds range from the brilliant yellow-tinged scarlet and vermillion to bluish-red crimson, and vary in shade from the pale red pink to the dark red burgundy.

red

Noun

1. The color of the setting sun, blood, and strawberries; the color which is evoked by the longest visible wavelengths (between about 625–740 nm), and a primary additive color.
2. A revolutionary socialist or (most commonly) a Communist; a Bolshevik, a supporter of the Bolsheviks in the Russian Civil War.

Adjective

1. Of a red hue.
2. Having an orange-brown or orange-blond colour; ginger.