Acid Red 51 Chemical Properties

storage temp. 

2-8°C, sealed storage, away from moisture and light

form 

Powder

color 

Dark maroon

Appearance

Red or brown particles or powder

Water Solubility 

Soluble in water, glycerin and methanol.

Sensitive 

Light Sensitive & Hygroscopic

EPA Substance Registry System

Benzoic acid, 2-(6-hydroxy-2,4,5,7-tetraiodo-3-oxo-3H-xanthen-j9-yl)-, disodium salt (568-63-8)

Safety Information

Hazard Codes 

Xn

Risk Statements 

22

Safety Statements 

36-24/25-22

WGK Germany 

3

RTECS 

LM5950000

TSCA 

Yes

HS Code 

32129000

MSDS

• Language:English Provider:SigmaAldrich
• Language:English Provider:ACROS
• Language:English Provider:ALFA

Acid Red 51 Usage And Synthesis

Uses

Acid Red 51 is brightly colored, has good tinting strength and stability, and is inexpensive, making it commonly used in processed food products and beverages. Because it is poorly absorbed in the digestive tract, it was previously considered a relatively safe synthetic pigment. However, Acid Red 51 actually has strong toxicity, exceeding that of the aforementioned red pigments (carmine, allura red, and amaranth). Its LD50 is 1.9 g/kg orally in rats. Later studies found that in addition to being carcinogenic and teratogenic, long-term intake of Acid Red 51 can also interfere with and damage the human nervous system, easily causing adverse symptoms such as hyperactivity, mood instability, poor concentration, poor self-control, behavioral abnormalities, sleep disorders, and loss of appetite.

Description

2,4,5,7-Tetraiodofluorescein sodium is a red xanthene dye derived from fluorone, commonly used as a food coloring agent.

Definition

ChEBI: Erythrosin B is an organic sodium salt that is the disodium salt of 2-(2,4,5,7-tetraiodo-6-oxido-3-oxo-8a,10a-dihydroxanthen-9-yl)benzoic acid. It has a role as a fluorescent dye. It contains an erythrosin(2-).

Acid Red 51(568-63-8)Related Product Information

• Sodium benzoate
• Trisodium phosphate
• Sodium bicarbonate
• Methanol
• Ethylenediaminetetraacetic acid disodium salt
• Folic acid
• Sodium citrate
• Sulforhodamine B
• Diclofenac sodium
• Sodium hydroxide
• Sodium acetate
• Ethyl 2-(Chlorosulfonyl)acetate
• Hyaluronic acid
• Sodium alginate
• CHLOROPHOSPHONAZO III
• Erythritol
• Citric acid
• Sodium Monofluorophosphate