Acid Red 26 (>80%)

Basic Information

View in Editor

CAS Number

3761-53-3

Molecular Formula

C18H14N2Na2O7S2

Molecular Weight

480.4 g/mol

Chemical Classification

Basic Chemical Raw Materials Organic Chemicals Carboxylic Acids

Fine Chemicals Dyes and Pigments Organic Dyes

Fine Chemicals Surfactants Anionic Surfactants

Basic Physical Properties

SMILES

View in Editor

CC1=CC(=C(C=C1)N=NC2=C3C=CC(=CC3=CC(=C2O)S(=O)(=O)[O-])S(=O)(=O)[O-])C.[Na+].[Na+]

InChI

InChI=1S/C18H16N2O7S2.2Na/c1-10-3-6-15(11(2)7-10)19-20-17-14-5-4-13(28(22,23)24)8-12(14)9-16(18(17)21)29(25,26)27;;/h3-9,21H,1-2H3,(H,22,23,24)(H,25,26,27);;/q;2*+1/p-2

InChIKey

YJVBLROMQZEFPA-UHFFFAOYSA-L

LogP

5.54740

Complexity

792

Safety Information

View Safety Information

GHS Hazard Pictograms

H351

Hazard Statement

H351 Suspected of causing cancer
Carcinogenicity

Synonyms & References

English

C.I. Acid Red 26
Acid Scarlet 2B
Red R
Disodium (2,4-dimethylphenylazo)-2-hydroxynaphthalene-3,6-disulphonate
Ponceau 2RL
Tetracid Ponceau 2R
1-Xylylazo-2-naphthol-3,6-disulphonic acid, disodium salt
AKOS024319210
Disodium salt of 1-(2,4-xylylazo)-2-naphthol-3,6-disulfonic acid
EINECS 223-178-3
Hexacol Ponceau 2R
2,7-Naphthalenedisulfonic acid, 4-((2,4-dimethylphenyl)azo)-3-hydroxy-, disodium salt
NSC-10458
Kiton Ponceau R
CI F Food Red 5
D&C RED NO. 5 (DELISTED)
Scarlet R (VAN)
Edicol ponceau rs
Ponceau rg
Edicol Supra Ponceau R
Ponceau 2R (Biological stain)
D and C Red
Cerven kysela 26 [Czech]
AKA503 [INCI]
Hexacol Ponceau MX
Acid Scarlet
Ponceau fr
Pas kwasowy 2 RL
Cerven potravinarska 5
C.I. Food Red 5
Scarlet 2RB

MDL Number

MFCD00003897

FAQ

What are the physical and chemical properties of Acid Red 26 (>80%) (CAS: 3761-53-3)?

Acid Red 26 (>80%) (CAS: 3761-53-3) is a water-insoluble, light-fast azo dye. It has a molecular weight of approximately 660.4 g/mol. The dye exhibits poor solubility in water but can dissolve in organic solvents. It is stable under acidic conditions and exhibits good resistance to light and fading. Its crystalline form is an amorphous solid. It is reactive towards cellulose and protein fibers, making it suitable for dyeing textiles and leather.

How is Acid Red 26 (>80%) (CAS: 3761-53-3) typically synthesized?

Acid Red 26 (>80%) (CAS: 3761-53-3) is synthesized via the coupling of a 4-aminobenzenesulfonic acid derivative with a disazo coupling component. The reaction is conducted in the presence of a strong acid catalyst such as sulfuric acid. The process is selective and yields a high percentage of the desired product. The typical yield is around 80-90%.

What industries use Acid Red 26 (>80%) (CAS: 3761-53-3)?

Acid Red 26 (>80%) (CAS: 3761-53-3) is widely used in the textile and leather dyeing industry for its excellent lightfastness and color stability. It is also utilized in the paper industry for coloring paper products. Additionally, it has applications in the plastics and coatings industry, where it can impart vibrant colors to polymer matrices. In the pharmaceutical industry, it may be used as a reference compound for certain tests.

What precautions should be taken when handling Acid Red 26 (>80%) (CAS: 3761-53-3)?

When handling Acid Red 26 (>80%) (CAS: 3761-53-3), it is essential to wear personal protective equipment (PPE) such as gloves, goggles, and protective clothing to prevent skin contact and eye irritation. Work in a well-ventilated area or under a fume hood to avoid inhalation. Spills should be handled promptly using an appropriate absorbent material. Refer to the Safety Data Sheet (SDS) for detailed handling and storage instructions.