Sodium Hyposulfite
Basic information:
CAS NO.7775-14-6
UN NO.1384
Chemical formula:Na2S2O4
Molecular weight:174.10
Character:white crystaline powder
Density:2.3～2.4
Melting point:300℃(dec.)
Boiling point:250g/L (20℃)
Solubleness(mg/mL):Easily soluble in water,insoluble in alcohol
Techical Index(Mass fraction/%)
|
Items |
Superior grade |
First grade |
Qualified |
|
Sulfur dioxide（SO2） %≥ |
99.97 |
99.90 |
99.60 |
|
Residue %≤ |
0.01 |
0.04 |
0.20 |
|
Moisture %≤ |
0.02 |
0.06 |
0.20 |
|
Arsenic （As） %≤ |
0.000004 |
|
|
Uses:
Widely used in printing and dyeing industry, such as cotton fabric AIDS and silk wool fabric bleaching.Also used in medicine, mineral processing, copper plate printing.The paper industry is used as bleaching agent, etc.Food grade products are used as bleach, preservatives and antioxidants.
Package/Capacity of container/Storage:
Packing:in 25kg bag within plastic.
Should be stored in a cool, ventilated, dry warehouse.Prevent from moisture, direct sunlight, stay away from fire source, do not contact with water or steam, do not store and transport with oxidant or other inflammable articles.Immediately after use, tie the mouth, cover, and store properly.