Ammonium dichromate density

The most common bleaching agents are copper sulfate, potassium permanganate, potassium ferricyanide, and potassium or ammonium dichromate. Most B R toners require a darker print than usual as there is often a loss of density. However, this is not always the case as copper bleaches will intensify the print. 

DIBA = diisobutyladipate 163 dibutylphthalate 95 163 298 327 dibutylsebacate 163 dibutyltartrate 163 dichromate d ammonium 14 Dichte = density 77 dicyanodiamide 63 156 231 diethyldiphenylurea = Centralit I 56 ... 

An alternative method of preparation depends upon the interaction in aqueous solution of ammonium chloride and potassium diehromate. Ammonium diehromate is very soluble in water, and may be separated from ammonium chloride and potassium diehromate by precipitatioi-i with alcohol.1 The crystals are monochnicii (probably isomorphous with the monoclinic form of potassium dichromate), and have i density 2-15. On heating, nitrogen is evolved (at a red heat, flame is produced), but the reaction is not so simple as that expressed by the usual equation ... 

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