Государственный оптический институт им.С.И.Вавилова
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FIELD: photographic materials. SUBSTANCE: method involves the use of a mixture of potassium permanganate and sulfuric acid as reversing whitening agent at concentrations 0.3-0.6 g/l and 0.6-1.2 ml/l (specific gravity is 1.84 g/cm) as an aqueous solution. EFFECT: improved method of treatment. 1 tbl
SU4760847/25A1989-10-171989-10-17Method of treatment of halide-silver holographic photomaterial
SU1837721A1
(en)
Purification of reaction mixture produced on manufacturing 2,3-epoxypropyltrialkylammonium chloride by treating chlorohydroxypropyltrialkylammonium chloride with alkali functional substance in aqueous medium