5-Amino-2-naphthalenesulfonic acid(CAS: 119-79-9)

5-Amino-2-naphthalenesulfonic acid (CAS: 119-79-9) is a crystalline solid with a molecular weight of approximately 222.17 g/mol. It has a solubility of about 17 g/L in water at 20°C. It is moderately reactive, often used in acidic conditions for dyeing and other analytical applications.

5-Amino-2-naphthalenesulfonic acid is typically synthesized through the sulfonation of 2-naphthol followed by reduction of the sulfonic acid group. Common methods include using sulfur trioxide and potassium hydroxide as catalysts, with yields up to 90%. Selectivity and purity can be controlled through careful reaction conditions.

5-Amino-2-naphthalenesulfonic acid (CAS: 119-79-9) is used in various industries including pharmaceuticals, dyes and pigments, and environmental monitoring. It serves as a reagent in analytical chemistry and is also used in the synthesis of other chemicals and materials.

When handling 5-Amino-2-naphthalenesulfonic acid (CAS: 119-79-9), it is important to wear appropriate personal protective equipment (PPE) such as gloves and safety glasses. Store in a well-ventilated area, away from strong acids and oxidizers. In case of spill, use appropriate spill cleanup procedures and consult the safety data sheet (SDS) for detailed instructions.