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HomeProduct name listAcid Blue 9

Acid Blue 9

Synonym(s):Acid Blue 9;Alphazurine FG;E133;Erioglaucine disodium salt;FD&C;BLUE No. 1

  • CAS NO.:2650-18-2
  • Empirical Formula: C37H39N3O9S3
  • Molecular Weight: 765.91
  • MDL number: MFCD00198069
  • EINECS: 220-168-0
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2023-05-04 17:34:36
Acid Blue 9 Structural

What is Acid Blue 9?

Description

FD & C Blue No. 1 is principally the disodium salt of ethyl[4-[p- [ethyl(m-sulfobenzyl)amino]-α-(ο-sulfophenyl)benzylidene]2,5-cyclohexadien-l-ylidene](m-sulfobenzyl) ammonium hydroxide inner salt.
The colorant is a dark purple to bronze powder that dissolves in water to give a solution green-blue at neutrality, green in weak acid, and yellow in stronger acid. Addition of base to its neutral solution produces a violet color only on boiling. When dissolvedin concentrated sulfuric acid, it yields a yellow solution that turns green when diluted with water. It is soluble in 95% ethanol. FD & C Blue No. 1 is used in beverages and beverage powders, dairy products, bakery products, dessert powders, confectionery products, condiments, icings, syrups, jams, jellies, marmalades, liqueurs, and extracts. It is also used for coloring ingested drugs.

Chemical properties

Blue powder

The Uses of Acid Blue 9

Acid Blue 9 (CAS# 2650-18-2) is an organic azo dye. It has been used in the preparation of solar-sensitive liposomes capable of capturing and releasing food dyes for the measurement of sunlight exposure over extended periods of time. Being water soluble, acid blue 9 is often considered a pollutant, and is used as an analyte in the development of azo-dye removal processes.

Preparation

2-Formylbenzenesulfonic acid ?and 3-(Ethyl(phenyl)amino)methyl)benzenesulfonic acid condensation, oxidation, and then the product into the ammonium salt or sodium salt.

Definition

ChEBI: Erioglaucine A is an aromatic amine.

Flammability and Explosibility

Not classified

Safety Profile

Human poison by intravenous route. Human systemic effects by intravenous route: muscle contractions or spasticity and dpspnea. Questionable carcinogen with experimental neoplastigenic and tumorigenic data. Mutation data reported. When heated to decomposition it emits very toxic fumes of NH3, NOx, and SOx.

Properties and Applications

colourful green light blue. Violet powder, soluble in water, in 90 ℃ water solubility of 50 g/L, soluble in ethanol. The strong sulfuric acid in orange, dilute yellowish later. The water solution is green light blue dye, add sodium hydroxide after it shows colorless, and you have a deep purple precipitation. Good levelness, white sex is better, for copper, iron ion sensitive, dyeing should pay attention, or influence colored light. This product used for wool, silk,nylon?with wool blended fabric dyeing and printing. Can also be used as a food dyes and organic pigments, also used for paper shading and anti-epidemic field, can also be used in leather color.

Standard Light Fastness Soaping Persperation Fastness Oxygen bleaching Fastness to seawater
Fading Stain Fading Stain Fading Stain
ISO 3 2-3 3 3 3 3
AATCC 1 4 4 2 2 3-4

Properties of Acid Blue 9

Melting point: 283 °C (dec.)(lit.)
Density  1.1666 (rough estimate)
vapor pressure  0Pa at 25℃
refractive index  1.6000 (estimate)
storage temp.  Amber Vial, Refrigerator
solubility  DMSO (Slightly), Ethyl Acetate (Slightly), Methanol (Slightly)
form  Solid
color  Dark Blue to Very Dark Purple
Water Solubility  1000g/L at 24.3℃
Stability: Light Sensitive
CAS DataBase Reference 2650-18-2(CAS DataBase Reference)
EPA Substance Registry System C.I. Acid Blue 9, diammonium salt (2650-18-2)

Safety information for Acid Blue 9

Computed Descriptors for Acid Blue 9

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