2-Naphthalenesulfonic acid

Basic Information

View in Editor

CAS Number

120-18-3

Molecular Formula

C10H8O3S

Molecular Weight

208.24 g/mol

Chemical Classification

Basic Chemical Raw Materials Organic Chemicals Carboxylic Acids

Fine Chemicals Dyes and Pigments Organic Dyes

Basic Physical Properties

Melting Point

122-126°C

Boiling Point

317.43°C (rough estimate)

Water Solubility

Soluble in water.

Solubility

water: freely soluble(lit.)

Refractive Index

1.4998 (estimate)

SMILES

View in Editor

C1=CC=C2C=C(C=CC2=C1)S(=O)(=O)O

InChI

InChI=1S/C10H8O3S/c11-14(12,13)10-6-5-8-3-1-2-4-9(8)7-10/h1-7H,(H,11,12,13)

InChIKey

KVBGVZZKJNLNJU-UHFFFAOYSA-N

LogP

2.0865

Topological Polar Surface Area

54.370000000000005 Å²

Hydrogen Bond Donor/Acceptor

1 / 3

Complexity

291

Safety Information

View Safety Information

GHS Hazard Pictograms

H314

Hazard Statement

H314 Causes severe skin burns and eye damage
Skin corrosion/irritation

Hazard Class

Class 8 Class 8

Sensitiveness

Hygroscopic

Synonyms & References

English

2-Naphthalene Sulfonic Acid
naphthalene-2-sulfonicacid
2-Naphthalenesulfonic acid, monohydrate
2-Naphthalenesulfonic acid monohydrate (Salt/Mix)
UNII-O9S4K2S25E
Tox21_301657
CHEBI:44229
CHEMBL1234624
.beta.-Naphthalenesulfonic acid
DB08254
PD004600
O9S4K2S25E
DTXCID3024788
2-Naphthylsulfonic acid
Naphthalene-2-sulfonic acid hydrate (Salt/Mix)
AKOS015897326
DTXSID5044788
beta-Naphthylsulfonic acid
Naphthalene-2-sulfonic acid
4-11-00-00527 (Beilstein Handbook Reference)
Naphthalene-2-sulfonic acid 2-Naphthalenesulfonic acid
I(2)-NaphthalinsulfosA currencyure
MFCD00004089
2-Sulfonaphthalene
.beta.-Naphthylsulfonic acid
N0437
BRN 1955756
EC 204-375-3
NS00000299
Q10395590
120-18-3

MDL Number

MFCD00149271

Customs Code

2904100000

FAQ

What is 2-Naphthalenesulfonic acid (CAS: 120-18-3)?

2-Naphthalenesulfonic acid (CAS: 120-18-3) is a sulfonic acid derivative of naphthalene with the chemical formula C10H8SO3. It is a white crystalline solid, soluble in water and organic solvents, and exhibits acidic properties due to the sulfonyl group. Commonly used as a precursor in organic synthesis, it plays a key role in producing dyes, pharmaceuticals, and other industrial chemicals.

What are the main uses of 2-Naphthalenesulfonic acid (CAS: 120-18-3)?

2-Naphthalenesulfonic acid (CAS: 120-18-3) is widely used in the dye industry for creating azo dyes and sulphonated compounds. It serves as an intermediate in pharmaceuticals, such as antihistamines and antifungals, and is also applied in polymer synthesis and research for functional group modification. Its versatility makes it essential in chemical manufacturing processes.

Is 2-Naphthalenesulfonic acid (CAS: 120-18-3) safe?

2-Naphthalenesulfonic acid (CAS: 120-18-3) is toxic if inhaled, ingested, or absorbed through the skin. It may cause irritation to the respiratory system, eyes, and skin. Safety precautions include wearing protective gloves, goggles, and clothing, and ensuring proper ventilation. Handling should follow OSHA guidelines to minimize exposure risks.

How should 2-Naphthalenesulfonic acid (CAS: 120-18-3) be stored?

2-Naphthalenesulfonic acid (CAS: 120-18-3) should be stored in a cool, dry place, away from light and moisture. Keep in a sealed, airtight container to maintain stability. It is generally stable under normal storage conditions but should avoid contact with water to prevent hydrolysis. Store in a well-ventilated area for safety.