... point : 40 -45oC , Relative density :1.729( 17 oC ). 5.Application:used in fixers, plating, leather, reductant, dechlorinating agent, sulfur ... gradeAnhydrous gradeAppearancecolorless transparent crystalcolorless transparent crystalwhite powderAssay≥99.00%≥98.5%≥97.0%Water Insoluble matter≤0.01%≤0.03%≤ ... ≤0.001%≤0.003%≤0.005%PH6.5-9.56.5-9.56.5~9.5Water solution reactionin accordance with the ...