567-13-5

Basic information

• Product Name: 1-AMINO-2-NAPHTHOL-4-SULFONIC ACID
• Synonyms: 4-AMINO-3-NAPHTHOL-1-SULFONIC ACID;4-AMINO-3-HYDROXYNAPHTHALENE-1-SULFONIC ACID;4-AMINO-3-HYDROXY-1-NAPTHALENE SULFONIC ACID;4-AMINO-3-HYDROXY-1-NAPHTHALENESULFONIC ACID;2-HYDROXY-4-SULFO-1-NAPHTHYLAMINE;1-AMINO-2-HYDROXY-4-SULFONAPHTHALENE;1-AMINO-2-HYDROXY-4-NAPHTHALENESULFONIC ACID;1-AMINO-2-NAPHTHOL-4-SULPHONIC ACID
• CAS NO: 567-13-5
• Molecular Formula: C₁₀H₉NO₄S
• Molecular Weight: 239.25
• EINECS: 204-147-3
• Mol File: 567-13-5.mol
• Article Data: 3

Chemical Properties

• Melting Point: 290 °C (dec.)(lit.)
• Boiling Point: °Cat760mmHg
• Flash Point: °C
• Appearance: /
• Density: 1.627 g/cm³
• Refractive Index: 1.748
• PKA: -0.13±0.40(Predicted)
• CAS DataBase Reference: 1-AMINO-2-NAPHTHOL-4-SULFONIC ACID(CAS DataBase Reference)
• NIST Chemistry Reference: 1-AMINO-2-NAPHTHOL-4-SULFONIC ACID(567-13-5)
• EPA Substance Registry System: 1-AMINO-2-NAPHTHOL-4-SULFONIC ACID(567-13-5)

Safety Data

• WGK Germany: 3
• RTECS: QK1292000
• Hazardous Substances Data: 567-13-5(Hazardous Substances Data)

Usage

General Description

1-Amino-2-naphthol-4-sulfonic acid, also known as ANS acid, is a type of organic compound with a molecular formula of C10H9NO4S. This chemical substance, often appearing as a grey to black powder, is frequently used in the production of various dyes and pigments. Its sulfonic acid component allows it to be soluble in water and makes it useful in certain biological applications. However, it is considered a hazardous substance due to its potential to cause irritation to the eyes, skin, and respiratory system. Proper handling and storage measures should thus be adhered to while working with this chemical.

InChI:InChI=1/C10H9NO4S/c11-8-5-9(16(13,14)15)6-3-1-2-4-7(6)10(8)12/h1-5,12H,11H2,(H,13,14,15)

Upstream product

• 23792-56-5 2-benzeneazo-1-naphthol-4-sulfonic acid 
• 120626-07-5 N-chloro-1,2-naphthoquinone 2-imine 
• 7647-01-0 hydrogenchloride 
• 90800-58-1 3-hydroxyimino-4-oxo-3,4-dihydro-naphthalene-1-sulfonic acid 
• 3682-32-4 2-nitroso-1-naphthol-4-sulphonic acid 
• 132-53-6 2-Nitroso-1-naphthol 
• 130-13-2 sodium 4-amino-1-naphthalenesulfonate 
• 6099-57-6 sodium 1-naphthol-4-sulfonate 
• 127367-84-4 C₂₆H₁₆ClN₇O₁₃S₄^(4-)*4Na⁽¹⁺⁾ 
• 67-63-0 isopropyl alcohol 
• 1787-54-8 2-Nitroso-1-naphthol-4-sulfonsaeure Natriumsalz 
• 71735-35-8 4-hydroxy-3-nitro-naphthalene-1-sulfonic acid 
• 6373-60-0 1,2-naphthoquinone-2-oxime 

Downstream Products

• 887-77-4 1-hydroxy-4-sulfo-naphthalene-2-diazonium-betaine 
• 7664-93-9 sulfuric acid 
• 36451-09-9 1,2-naphthoquinone-2-diazide-4-sulfonyl chloride 
• 2066-93-5 3,4-dioxo-3,4-dihydro-naphthalene-1-sulfonic acid 
• 64173-96-2 1,2-Naphthochinondiazid-⁽²⁾-4-sulfonsaeure Natriumsalz 
• 87459-38-9 3-<(3-Benzylamino-4-oxo-1-naphthyliden)amino>-4-hydroxy-1-naphthalinsulfonsaeure 

Relevant articles and documents

Method for preparing amino-naphthol-sulfonic acid through catalytic hydrogenation

The invention discloses a method for preparing amino-naphthol-sulfonic acid through catalytic hydrogenation, belonging to the technical field of organic synthesis. The method is characterized by using Raney nickel, Pt/C or Pd/C as a catalyst and carrying out catalytic hydrogenation reaction at a temperature of 50-120 DEG C and a pressure of 0.5-4MPa for 0.5-5 hours, thus preparing amino-naphthol-sulfonic acid, wherein the amount of the added catalyst is 0.5-8% of the mass of added nitroso group or nitro-naphthol-sulfonic acid. The product has liquid chromatography content of more than 98% and yield of more than 90%. The method has the advantages that the process is simple and convenient to operate and avoids equipment corrosion; the product obtained after reaction is completed can be directly used in the next reaction, without after-treatment, and does not generate any solid or liquid waste, thus avoiding the problems of difficulty in solid waste treatment and pollution in sodium hyposulfite processes; the product obtained by applying the process has good quality; and the production process is environment-friendly and green.

BASIC FEATURES OF THE MECHANISM OF PHOTODECOMPOSITION OF ACTIVE AZO DYES IN SOLUTIONS

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