CAS NO. : 9064-67-9Grade : food gradeRaw material : fresh fish skin (mainly tilapias fish, others: grass carp, also cod fish)Character : tasteless, odorless, colorless and highly solubleAppearance : White or Off-white Powder Protein Content : =95% Molecular weight : 3KDa max, Heavy Meta : Pb0.5 ppm; As0.3ppm; Hg0.50.5ppm. Loss on drying : =2.0%Storage : Preserve in tight container Validity:Two years