It is solid at normal temperature and does not belong to dangerous goods.The package is 25KG/ bag.Product grades are divided into industrial grade (content 96%-98%) and electronic grade (content above 99.5%)。Main application: it is used to produce two types of optical brightening agent CBS351 (main raw materials biphenyl dichlorobenzyl, o-sulfonic acid benzaldehyde) and optical brightening agent FP127 (main raw materials biphenyl dichlorobenzyl, o-ethoxybenzaldehyde)