Description

Sodium m-[(4-amino-3-methoxyphenyl)azo]benzenesulphonate (CAS 6300-07-8) is a high-purity azo dye intermediate with the molecular formula C₁₃H₁₂N₃NaO₄S. This orange to reddish-brown powder is widely used in the synthesis of textile dyes, inks, and biological staining reagents due to its excellent chromophoric properties and stability. With a solubility in water and select organic solvents, it serves as a versatile precursor for covalent conjugation in industrial and research applications. Each batch undergoes rigorous QC testing (HPLC, FTIR, elemental analysis) to ensure ≥98% purity, meeting ISO 9001 standards. Packaged in amber glass bottles or HDPE drums with moisture-resistant liners for optimal shelf life.

Properties

• CAS Number: 6300-07-8
• Complexity: 468
• IUPAC Name: sodium;3-(4-amino-3-methoxy-phenyl)azobenzenesulfonate
• InChI: InChI=1S/C13H13N3O4S.Na/c1-20-13-8-10(5-6-12(13)14)16-15-9-3-2-4-11(7-9)21(17,18)19;/h2-8H,14H2,1H3,(H,17,18,19);/q;+1/p-1
• InChI Key: CSVLGAQNGISLDW-UHFFFAOYSA-M
• Exact Mass: 329.04462133
• Molecular Formula: C13H12N3NaO4S
• Molecular Weight: 329.31
• SMILES: COC1=C(C=CC(=C1)N=NC2=CC(=CC=C2)S(=O)(=O)[O-])N.[Na+]
• Topological: 126
• Monoisotopic Mass: 329.04462133
• Synonyms: 6300-07-8, DTXSID9064213, Sodium m-((4-amino-3-methoxyphenyl)azo)benzenesulphonate, sodium m-[(4-amino-3-methoxyphenyl)azo]benzenesulphonate, DTXCID7043611, 228-581-8, Benzenesulfonic acid, 3-[(4-amino-3-methoxyphenyl)azo]-, monosodium salt, sodium;3-[(4-amino-3-methoxyphenyl)diazenyl]benzenesulfonate, 4-Amino-3-methoxyazobene-3′-sulfonic acid sodium salt, Sodium 3-methoxy-4-aminoazobenzene-3′-sulfonate, Benzenesulfonic acid, 3-((4-amino-3-methoxyphenyl)azo)-, monosodium salt, Direct yellow PG, NSC 45523, 3-((4-Amino-3-methoxyphenyl)azo)benzenesulfonic acid, sodium salt, 3-(4-Amino-3-methoxyphenylazo)benzenesulfonic acid, sodium salt, SCHEMBL11803269, SCHEMBL11803271, CSVLGAQNGISLDW-UHFFFAOYSA-M, EINECS 228-581-8, AKOS015960604, AKOS015960990, AC-12616, FD171368, DB-017574, NS00081307, 4-Amino-3-methoxyazobene-3′-sulfonic acid sodium salt, Sodium3-((4-amino-3-methoxyphenyl)diazenyl)benzenesulfonate, Sodium 3-((4-amino-3-methoxyphenyl)diazenyl)benzenesulfonate, Benzenesulfonic acid, 3-(2-(4-amino-3-methoxyphenyl)diazenyl)-, sodium salt (1:1)

This compound is primarily employed as a diazo component in the synthesis of acid and direct dyes for cotton, silk, and paper. Researchers utilize its azo linkage for covalent protein labeling in fluorescence microscopy and ELISA assays. In material science, it functions as a UV-absorbing additive in polymers. Industrial applications include colorant production for inks and coatings with lightfastness up to ISO 105-B02 Grade 5.

Safety and Hazards

GHS Hazard Statements

• Not Classified
• Reported as not meeting GHS hazard criteria by 2 of 2 companies. For more detailed information, please visit ECHA C&L website.

Hazard Classes and Categories

• Not Classified

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