alias name: logwood extract haematoxylin is the main part of the logwood color.we can see black-brown powder apasty or liquid. it is absolute a natural pigment abstracted from the core of haematoxylon campechianum by modern biotechnology as black-brown coloring. this product has been exported to eu, japan, usa, asia etc. the physical level and microbiological level can meet the export standards well.for avoiding fakes,this product already has normal enterprise no: q/kle81-2005. package: cardboard drums, with double aseptic food poly bags inside. or by cartons, with vacual aseptic food poly bags inside, 20kgs per carton with 8 bags inside,2.5kg per bag.