4-Hydroxy-1-naphthalenesulfonic acid

Basic Information

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CAS Number

84-87-7

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

Physical State

White to Yellow Solid

Melting Point

170℃

Boiling Point

335.63°C (rough estimate)

Density

1.4643 (rough estimate)

Refractive Index

1.7040 (estimate)

SMILES

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C1=CC=C2C(=C1)C(=CC=C2S(=O)(=O)O)O

InChI

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

InChIKey

HGWQOFDAUWCQDA-UHFFFAOYSA-N

LogP

1.7921

Topological Polar Surface Area

74.6 Å²

Hydrogen Bond Donor/Acceptor

2 / 4

Complexity

319

Safety Information

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Hazard Statement

H302 Harmful if swallowed
Acute toxicity, oral

H315 Causes skin irritation
Skin corrosion/irritation

H319 Causes serious eye irritation
Serious eye damage/eye irritation

H335 May cause respiratory irritation
Specific target organ toxicity, single exposure; Respiratory tract irritation

Synonyms & References

English

HGWQOFDAUWCQDA-UHFFFAOYSA-N
MFCD00065324
1-hydroxynaphthalene-4-sulphonic acid
84-87-7
4-hydroxy-naphthalene-1-sulfonic acid
1-Hydroxy-4-naphthalenesulfonic acid
NSC-9587
UNII-6W41U3C9YN
1-Naphtho-4-sulfonic acid
4-Hydroxynaphthalene-1-sulphonic acid
1-naphthalenesulfonic acid,4-hydroxy-
NSC 9587
Nevile and Winther's acid
.alpha.-Naphthol-4-sulfonic acid
1-NAPHTHOL-4-SULFONIC ACID
CS-0171427
Neville-winther acid
SCHEMBL249254
6W41U3C9YN
EINECS 201-568-4
AKOS007930282
EC 201-568-4
DTXSID2058910
4-Hydroxynaphthalene-1-sulfonicacid
4-hydroxynaphthalen-1-sulfonsyre
FT-0631389
Q27265617
alpha-Naphthol-4-sulfonic acid
1-Naphthalenesulfonicacid, 4-hydroxy-
AC-10634
NSC9587

MDL Number

MFCD00065324

Customs Code

2908999090

FAQ

What is 4-Hydroxy-1-naphthalenesulfonic acid (CAS: 84-87-7)?

4-Hydroxy-1-naphthalenesulfonic acid (CAS: 84-87-7) is an organic compound with the chemical formula C10H8O3S. It is a white crystalline solid that is soluble in water and commonly used as a precursor in the synthesis of various dyes and pharmaceutical intermediates. The compound contains a naphthalene ring with a sulfonic acid group and a hydroxyl group, providing it with unique chemical reactivity and functional properties.

What are the main uses of 4-Hydroxy-1-naphthalenesulfonic acid (CAS: 84-87-7)?

4-Hydroxy-1-naphthalenesulfonic acid (CAS: 84-87-7) is primarily used in the production of azo dyes, such as tartrazine and sunset yellow, which are widely applied in the food and textile industries. It also serves as an important intermediate in pharmaceutical synthesis, contributing to the development of drugs and other chemical products. Additionally, it finds applications in research and industrial chemical processes due to its reactivity and structural versatility.

Is 4-Hydroxy-1-naphthalenesulfonic acid (CAS: 84-87-7) safe?

4-Hydroxy-1-naphthalenesulfonic acid (CAS: 84-87-7) is generally considered safe when handled properly. However, it may cause skin and eye irritation, and prolonged exposure could lead to respiratory issues. Safety precautions include wearing appropriate personal protective equipment (PPE) such as gloves, goggles, and a lab coat. It is advisable to follow safety standards set by OSHA and other regulatory bodies to ensure safe usage in industrial and laboratory settings.

How should 4-Hydroxy-1-naphthalenesulfonic acid (CAS: 84-87-7) be stored?

4-Hydroxy-1-naphthalenesulfonic acid (CAS: 84-87-7) should be stored in a cool, dry, and well-ventilated area, away from direct sunlight. It is best kept in a sealed container to prevent moisture absorption and maintain stability. Storage at temperatures below 25°C is recommended, and exposure to humidity or light should be minimized to avoid degradation of the compound.