Name:2-NAPHTHOL 6-SULFONIC ACID (POTASSIUM SALT) CAS No:833-66-9 Product specification:White to gray white powder; content ≥ 85% (calculated by sodium salt); purity ≥ 98.5%; R salt content ≤ 1% (HPLC); insoluble matter in soda ash ≤ 0.2% Product packaging:25kg / bag
