... 4.Crude scale95%min Usage glacial acetic acid,CAS:64-19-7/E260,food grade mainly used in ... qualified acetic acid . Specifications glacial acetic acid,CAS:64-19-7/E260,food gradeItemStandardAppearanceColorless transparent liquidColor(platinum-cobalt ... color Number/hazen units) 10maxAcidity,w% 99.5minPotassium permanganate experiment minute 32minEvaporites deposits,w/% 0.005maxFreezing ...