2-Naphthol-6-sulfonic acid

Basic Information

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CAS Number

93-01-6

Molecular Formula

C10H8O4S

Molecular Weight

224.24 g/mol

Chemical Classification

Basic Chemical Raw Materials Organic Chemicals Carboxylic Acids

Fine Chemicals Dyes and Pigments Organic Dyes

Basic Physical Properties

Melting Point

>300 °C

Boiling Point

335.63°C (rough estimate)

Density

1.4643 (rough estimate)

Refractive Index

1.5400 (estimate)

SMILES

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C1=CC2=C(C=CC(=C2)S(=O)(=O)O)C=C1O

InChI

InChI=1S/C10H8O4S/c11-9-3-1-8-6-10(15(12,13)14)4-2-7(8)5-9/h1-6,11H,(H,12,13,14)

InChIKey

VVPHSMHEYVOVLH-UHFFFAOYSA-N

LogP

1.7921

Topological Polar Surface Area

74.6 Å²

Hydrogen Bond Donor/Acceptor

2 / 4

Complexity

319

Synonyms & References

English

6-Hydroxynaphthalene-2-sulfonic acid
6-Hydroxy-2-Naphthalenesulfonic Acid
6-Hydroxy-6-Sulfonic Acid
2-naphthol-6-sulphonic acid
Scheffers acid
2-Naphthol-6-sodium sulfonate
2-Naphthol-6-sulfonate potassium
2-NAPHTHOL-6-SULFONIC ACID
6-Hydroxynaphthalene-2-sulphonic acid
2-Hydroxy-6-naphthalenesulfonic acid
2-hydroxy-6-sulphonaphthalene
2-hydroxy-naphthalene-6-sulphonic acid
2-Naphthalenesulfonic acid,6-hydroxy
2-Naphtol-6-sulfosaure
6-naphthenol-2-sulfonic acid
Kyselina schaferova [Czech]
Schaeffer's acid
6-Hydroxy-2-naphthalenesulfonic acid (ACI)
2-Hydroxy-naphthalene-6-sulphonic acid
2-Naphthol-6-sulfonic acid
NSC 5871
Schaeffer's β-acid
Schaeffer's β-naphtholsulfonic acid
Schaffer's acid
β-Naphthol-6-sulfonic acid
β-Naphtholsulfonic acid S
DTXSID2047014
6-hydroxynaphthalene-2-sulfonic acid
4-11-00-00622 (Beilstein Handbook Reference)
6-hydroxy-beta-naphthalenesufonic acid
6-Hydroxynaphthalene-2-sulfonicacid

MDL Number

MFCD00035733

Customs Code

2908999090

FAQ

What are the physical and chemical properties of 2-Naphthol-6-sulfonic acid (CAS: 93-01-6)?

2-Naphthol-6-sulfonic acid is a white crystalline solid with a molecular weight of approximately 216.17 g/mol. It is soluble in water and slightly soluble in ethanol. Chemically, it is highly reactive towards nucleophiles and can form stable complexes with various metal ions. It is also a weak acid and exhibits mild acidity in aqueous solutions.

How is 2-Naphthol-6-sulfonic acid (CAS: 93-01-6) typically synthesized?

2-Naphthol-6-sulfonic acid is typically synthesized by the sulfonation of 2-naphthol using concentrated sulfuric acid. The reaction is carried out at high temperatures, and the use of a sulfonation catalyst like iron(III) sulfate can improve the yield and selectivity. The product is purified by recrystallization from water.

What industries use 2-Naphthol-6-sulfonic acid (CAS: 93-01-6)?

2-Naphthol-6-sulfonic acid finds applications in various industries. It is used in the pharmaceutical sector for the synthesis of certain medications, in the polymer industry as a colorant, in sensor technology for detecting specific substances, and in the semiconductor industry as a dopant in the manufacturing of electronic devices.

What precautions should be taken when handling 2-Naphthol-6-sulfonic acid (CAS: 93-01-6)?

When handling 2-Naphthol-6-sulfonic acid, it is crucial to wear appropriate personal protective equipment (PPE) such as gloves, goggles, and a lab coat. Work should be carried out in a well-ventilated area or a fume hood to prevent inhalation of the compound. Spills should be handled with caution using appropriate absorbent materials, and the material safety data sheet (MSDS) should be consulted for detailed spill cleanup procedures.