Food Red 4

CAS: 2302-96-7

Ref. 3D-CAA30296

Product Information

• Name: Food Red 4
• Synonyms: 1-Naphthalenesulfonic acid, 4-[(2-hydroxy-6-sulfo-1-naphthalenyl)azo]-, disodium salt, 1-Naphthalenesulfonic acid, 4-[2-(2-hydroxy-6-sulfo-1-naphthalenyl)diazenyl]-, sodium salt (1:2), 1869 Red, Acid Leather Red IBW, Acid Red 13, Acidal Red E, Acidol Red E, Acilan Red E, Brilliant Ponceau 3RF extra, Certicol Fast Red E, Cherry Red A Geigy, Cilefa Red E, Crispin Fast Red E, Dalf Fast Red, Fast Red E, Fast Red EA, Fast Red Specially Pure, HD Fast Red E, HD Fast Red E Supra, Hexacol Fast Red E, Hexalan Fast Red E, Hispacid Fast Red E, Naphthalene Red EA, Naphthionic Red A, Neklacid Fast Red E, Neklacid Red E, Red E for Food, Tertracid Red E, disodium 4-[(2Z)-2-(2-oxo-6-sulfonatonaphthalen-1(2H)-ylidene)hydrazinyl]naphthalene-1-sulfonate
• CAS: 2302-96-7

Description

Food Red 4 is a synthetic red dye that is soluble in organic solvents. It can be used as a food, drug, and cosmetic additive. The dye has been shown to have high binding constants for both metal ions and carbon nanotubes. A Langmuir adsorption isotherm was used to determine the equilibrium adsorption of this dye onto polyvinyl monomeric particles. The electron microscopic analysis showed average particle diameters of ˜1 μm. This dye has been synthesized using an azobenzene monomer and a polymer film.

• Brand: Biosynth

Chemical properties

• Molecular weight: 504.45 g/mol
• Formula: C₂₀H₁₄N₂O₇S₂•Na₂
• Purity: Min. 95%
• Color/Form: Powder