4-Hydroxy-7-(phenylamino)-2-naphthalenesulfonic acid

CAS: 119-40-4

Ref. 3D-FH37559

Product Information

• Name: 4-Hydroxy-7-(phenylamino)-2-naphthalenesulfonic acid
• Synonyms: 7-Anilino-4-hydroxy-2-naphthalenesulfonic acid, 1-Hydroxy-6-anilinonaphthalene-3-sulfonic acid, 1-Naphthol-3-sulfonic acid, 6-anilino-, 2- Phenylamino-5-Naphthol-7-Sulfonic Acid, 2-(N-Phenylamino)-5-naphthol-7-sulfonic acid, 2-Anilino-5-Naphthol-7-sulfonic acid, 2-Anilino-5-hydroxy-7-naphthalenesulfonic acid, 2-Naphthalenesulfonic acid, 4-hydroxy-7-(phenylamino)-, 2-Naphthalenesulfonic acid, 7-anilino-4-hydroxy-, 4-Hydroxy-7-(Phenylamino)-2-Naphthalenesulfonic Acid, 4-Hydroxy-7-(Phenylamino)Naphthalene-2-Sulfonic Acid, 5-Hydroxy-2-(phenylamino)-7-naphthalenesulfonic acid, 6-(Phenylamino)-1-naphthol-3-sulfonic acid, 6-Phenylamino-1-hydroxynaphthalene-3-sulfonic acid, 7-Anilino-4-hydroxy-2-naphtalenesulfonic acid, N-Phenyl I acid, N-Phenyl J acid, N-Phenyl-2-Amino-5-Naphthol-7-Sulfonic Acid, NSC 10451, NSC 1745, NSC 37153, Phenyl I acid, phenyl J-acid

Description

4-Hydroxy-7-(phenylamino)-2-naphthalenesulfonic acid (4HNPS) is a low energy radiation dye that has been shown to be effective in the detection of naphthalene. It can be used as a colorant to make polyvinyl chloride products and as a reactant in the production of diazonium salts. 4HNPS is also an optical dye, which exhibits strong absorption bands at 450 nm and 590 nm. The reaction mechanism for 4HNPS is a substitution reaction, where the hydroxyl group on the molecule reacts with an electron pair from the electron-rich aromatic ring. This reaction results in the formation of an unstable, highly reactive intermediate called a radical cation. When this radical cation encounters another electron pair, it reacts quickly with it to form a stable product called an excited state of 4HNPS. The light emitted by this excited state is characterized by its long wavelength and

• Brand: Biosynth

Chemical properties

• Molecular weight: 315.34 g/mol
• Formula: C₁₆H₁₃NO₄S
• Purity: Min. 95%
• InChI: InChI=1S/C16H13NO4S/c18-16-10-14(22(19,20)21)9-11-8-13(6-7-15(11)16)17-12-4-2-1-3-5-12/h1-10,17-18H,(H,19,20,21)
• InChI key: InChIKey=YGNDWDUEMICDLW-UHFFFAOYSA-N
• SMILES: O=S(=O)(O)c1cc(O)c2ccc(Nc3ccccc3)cc2c1