Sulphur Deep-blue 3R Dye

Sulphur Deep-blue 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 StandardsIndex 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 compliant3. Package: 40kg Woven bag with plastic bag underneath. 4. Uses: Used for cotton, jute, viscose, vinylon & cotton blend and leather’s dyeing. Sometimes also used for cotton’s printing. 5.Application performance SunlightSoap washingIn waterIn perspirationIroningRubbingColourfadedTransferofcolourColourfadedTransferOfcolourColour faded Transfer of colourDry Wet 32-345 3-4 5442 Sulphur Deep-blue 3R Dye