STABLE 3,3'-DICHLOROBENZIDINE DIHYDROCHLORIDE SUSPENSION

摘要

: Stable 3,3'-dichlorobenzidine dihydrochloride suspenion By means of a 3,3'-dichlorobenzidine dihydrochloride suspension in hydrochloric acid, comprising the components a) 35 to 63.5% by weight of 3,3'-dichlorobenzidine dihydrochloride; b) 11 to 24% by weight of hydrogen chloride; c) and 25 to 55% by weight of water, in each case relative to the total weight of the suspension (100% by weight) and with the proviso that the components a), b) and c) together make 100% by weight; and whose viscosity is in the range from 80 to 1400 mPa?s, 3,3'-dichlorobenzidine dihydrochloride can be stably suspended in hydrochloric acid at high concentration and consequently low water content and at the same lime a suspension having low viscosity can be obtained, so that the slurry flows out of containers without problems oven after rotatively long static storage.