Meta Phenylene Diamine 4 Sulfonic Acid (MPDSA) Item Index (1)Appearance Orange to Brown Powder (2)Purity 90% (3)Water 1% (4)Insolubles 0.20% (5)Sulphate Content 2500PPM (6)Ash Content 0.25 (7)PAAB3SA Content 1% (8)PAAB Content 0.1% (9)EC Number 203-187-9 Main use:Acid Yellow 6, Acid Red 151, Acid Red 7, Acid Red 142, Direct Red 152,/153/154, Direct Red 81, Direct Red 117, Direct Brown 202, Direct Orange 34, Direct Orange 37, Direct Orange 39, Mordant Orange 6, etc Packing: dry product: in 25kg woven bags or upon clients' request.