2-Naphthalenesulfonic acid(CAS: 120-18-3)

CAS Number
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Basic Information
Molecular Formula
C10H8O3S
Molecular Weight
208.24 g/mol
Physical Properties
Melting Point
122-126°C
Boiling Point
317.43°C (rough estimate)
Flash Point
°C
Water Solubility
Soluble in water.
Chemical Identifiers
SMILES
C1=CC=C2C=C(C=CC2=C1)S(=O)(=O)O
InChIKey
KVBGVZZKJNLNJU-UHFFFAOYSA-N
Database References
MDL Number
MFCD00149271
FAQ
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.
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.
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.
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.
Safety Notice
Please verify product specifications and safety data before use. Contact the supplier for detailed safety information.
Always follow proper handling procedures
Contact Information
Contact Person
Li Jun
2801519207@qq.com








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