... professional chemical company, we could offer you ice dying intermediates Naphthol AS series, our products' details are as folllows, please ... : Cream-coloured powder Strength: 100 of standard substance 2. Naphthol AS-E Assay ≥99.0% Appreance: Light cream-coloured powder ... Strength: 100 of standard substance And for Naphthol AS-BO,Naphthol AS-PH, Naphthol AS-OL,Naphthol AS-LC ect, we could also offer ...