Acid red 1 - Materials / Alfa Chemistry

NAVIGATION

Acid red 1

PRICE INQUIRY

Catalog Number

ACMA00016814

Product Name

Acid red 1

Category

Polymers

IUPAC Name

disodium;5-acetamido-4-hydroxy-3-phenyldiazenylnaphthalene-2,7-disulfonate

Molecular Weight

509.4g/mol

Molecular Formula

C18H13N3Na2O8S2

Canonical SMILES

CC(=O)NC1=C2C(=CC(=C1)S(=O)(=O)[O-])C=C(C(=C2O)N=NC3=CC=CC=C3)S(=O)(=O)[O-].[Na+].[Na+]

InChI

InChI=1S/C18H15N3O8S2.2Na/c1-10(22)19-14-9-13(30(24,25)26)7-11-8-15(31(27,28)29)17(18(23)16(11)14)21-20-12-5-3-2-4-6-12;;/h2-9,23H,1H3,(H,19,22)(H,24,25,26)(H,27,28,29);;/q;2*+1/p-2

InChI Key

WXLFIFHRGFOVCD-UHFFFAOYSA-L

Application

Acid Red 1 is a synthetic red azo dye primarily used as a colorant in various applications. It appears as a dark red powder and is soluble in water, resulting in a vivid red solution. Its unique properties are leveraged in industries such as textiles, where it is used for dyeing wool, polyamide fibers, and silk fabrics-especially under acidic conditions. Acid Red 1 is also utilized for coloring leather, cosmetics, paper, soap, and timber, and it plays a role in ink production. Despite its versatility, the compound presents certain chemical reactivities: in strong sulfuric acid, it appears blue-red, and when diluted, shifts to yellow and then red; it turns orange in nitric acid and forms a red precipitate in strong hydrochloric acid, dissolving when diluted. Interaction with copper and iron ions results in noteworthy color changes. While Acid Red 1 offers good dyeing levelness, concerns exist regarding its conversion to aniline, a toxic compound that may affect blood hemoglobin. Additionally, it exhibits varying degrees of fastness to light, soaping, perspiration, and seawater, as indicated by standardized fastness ratings. Safe handling and usage considerations are essential due to these characteristics.

Complexity

863

Covalently-Bonded Unit Count

EC Number

223-098-9

Exact Mass

508.993945g/mol

Formal Charge

Heavy Atom Count

MeSH Entry Terms

azofloxin;azophloxine;benzeneazo-8-acetylamino-1-naphthol-3,6-disulfonic acid, sodium salt;C.I. 18050;red 2G

Monoisotopic Mass