... and benzene.It present yellow or brown because of a small amount polymer containing hydrocyanic acid.Packing ... In addition, it can be used to synthesize various intermediates of pharmaceutical, pesticide, dye, pigment, such as triazole, ... mainly used as the material for dispersing dyes Quality index:Name of indexindexappearanceShallow brown crystallizationContent %≥99.0Dry weightlessness %≤0. ...