ACID ORANGE 8 Property

Density 

1.525[at 20℃]

vapor pressure 

0Pa at 25℃

storage temp. 

Amber Vial, Refrigerator, Under inert atmosphere

solubility 

Methanol (Slightly), Water (Slightly)

form 

Solid

Colour Index 

15575

color 

Dark Orange to Very Dark Red

Water Solubility 

26.83g/L at 20℃

LogP

-0.954 at 20℃

EPA Substance Registry System

C.I. Acid Orange 8, monosodium salt (5850-86-2)

Safety

WGK Germany 

3

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H372Causes damage to organs through prolonged or repeated exposure

H412Harmful to aquatic life with long lasting effects

Precautionary statements

P260Do not breathe dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P270Do not eat, drink or smoke when using this product.

P273Avoid release to the environment.

P314Get medical advice/attention if you feel unwell.

P501Dispose of contents/container to..…

ACID ORANGE 8 Chemical Properties,Usage,Production

Uses

Acid Orange 8 is a dye/stain. Dyes and metabolites.

Preparation

4-Amino-3-methylbenzenesulfonic acid?diazo, and Naphthalen-2-ol coupling.

Flammability and Explosibility

Non flammable

Properties and Applications

red light orange. For red orange is soluble in water, soluble in soluble fiber element, slightly soluble in ethanol and acetone, insoluble in other organic solvents. The strong sulfuric acid for blue-ray in red, yellow and orange solution diluted into and precipitation; In nitric acid solution for wine red and then into orange. Its water solution and strong hydrochloric acid is cherry red; Add sodium hydroxide with brown precipitation. Used for wool, silk, cotton, vinegar, polyamide fiber and fiber dyeing. Also used for paper, leather dyeing, the heavy metal salt used in organic pigments.

Purification Methods

Salt it out three times with sodium acetate, then extract it repeatedly with EtOH and dry.