Purpose: mainly used in medicine industry, manufacturing paper, bleaching plant fiber, food industry, hides tanning and processi

Purpose: mainly used in medicine industry, manufacturing paper, bleaching plant fiber,food industry, hides tanning and processing, leather printing and dyeing.Packing: Double-layered plastic knitted bag

Item	Standard	Index
appearance	White crystals powder
Most Content%	≥96%	96.34
Water Insoluble Matter%	≤0.03%	0.02
Free alkali%	≤0.40%	0.35
Fe%	≤0.004%	0.0039

Anhydrous Sodium Sulfite