5-(Dimethylamino)-1-naphthalenesulfonic acid(CAS: 4272-77-9)

5-(Dimethylamino)-1-naphthalenesulfonic acid is a crystalline solid with a molecular weight of approximately 248.27 g/mol. It has a solubility of about 10 g/L in water. Chemically, it is reactive towards bases and may undergo hydrolysis. It is used in various applications requiring acidic compounds with specific functional groups.

5-(Dimethylamino)-1-naphthalenesulfonic acid can be synthesized by reacting 1-naphthol with dimethylamine followed by sulfonation. Commonly, sulfuric acid is used as the sulfonating agent, and the reaction is carried out under acidic conditions. The yield is typically around 90%, and the product is purified by recrystallization.

5-(Dimethylamino)-1-naphthalenesulfonic acid is used in the pharmaceutical industry for the synthesis of certain compounds, in polymer manufacturing as a stabilizer, and in the semiconductor industry as a dopant. It is also used in analytical chemistry as a pH indicator.

When handling 5-(Dimethylamino)-1-naphthalenesulfonic acid, it is important to wear appropriate personal protective equipment (PPE), including gloves and goggles. Ensure the substance is used in a well-ventilated area or a fume hood. Spills should be cleaned up using an appropriate absorbent material, and the area should be thoroughly washed down. Always consult the Safety Data Sheet (SDS) for detailed handling and emergency procedures.