Сера темно-синее 3R

Physicochemical Property: Deep-blue powder. Water insoluble. Soluble in sodium sulfide solution, show brown-green and bright blue. Produce blue solution in concentrated sulfuric acid, show blue sediment after diluted. Dyes show olive in kalinous rongalite solution. Fade in sodium hypochlorite solution. Turn black in concentrated sulfuric acid. Quality Standards Index name Index Appearance Deep blue-gray powderColour Similar Intensity100±3 to standard productsMoisture content %≤4% Impurities insoluble in Na2S %≤2% Freevulcanization content %≤0.7% Fineness (residue through thesieve of 60μm), %:≤5% Fastness dyes on cotton fabricStandard compliantPackage: 40kg Woven bag with plastic bag underneath. Uses: Used for cotton, jute, viscose, vinylon & cotton blend and leather’s dyeing. Sometimes also used for cotton’s printing. Application performance SunlightSoap washingIn waterIn perspirationIroning RubbingColourfadedTransferofcolourColourfadedTransferOfcolourColour faded Transfer of colourDry Wet 32-345 3-4 5442