A database about Preparation of Laboratory Reagents. A Project of SCIENCE Pakistan

Aminonaphtholsulfonic Acid


Accurately weigh 5 g of sodium sulfite, 94.3 g of sodium bisulfite, and 700 mg of 1,2,4-aminonaphtholsulfonic acid, and mix. Prepare aminonaphtholsulfonic acid TS fresh on the day of use by dissolving 1.5 g of the dry mixture in 10 mL of water. 
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