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RAW MATERIALSGELATIN 1
PHOTOGRAPHICALLY ACTIVE IMPURITIES
8 other sections not shown
0-1N silver nitrate A.R. test absorption acetic acid acetone add 1 ml alcohol aliquot alkali ammonia ammonium Anal analysis aqueous barium barium chloride beaker blank boiling buffer calcium carbon caustic soda cellulose Chem chloride chloroform chromatography compounds concentration containing Cool cyanide detected determination dilute to 100 dissolve 1 gm distillation drops electrode endpoint ethyl acetate evaporate excess extract filter filtrate formaldehyde gelatin gelatin solution gm of gelatin halide heat hydrochloric acid hydroquinone indicator iodine layer litre measured methanol methyl metol ml flask ml of 5N ml of hydrochloric ml of sulphuric ml of water nitric acid optical density oxidation paper Phenidone phosphate Photogr plasticiser polarographic potassium bromide potassium iodide potentiometrically precipitate Preferred method procedure reagent residue resin Rosin's test sample shake silver nitrate sodium solvent standard starch steam bath sulphate sulphide sulphuric acid thiosulphate titration Transfer volts wash weight