product name :
sodium hydrosulphite
overview
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cas no :
7775-14-6
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einecs no :
231-890-0
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hs code :
2831101000
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grade standard :
88%,90%,85%min tech grade
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appearance :
free-flowing white crystalline powder
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packaging details :
50kg/drums
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application :
textile dyeing,reduction cleaning and etc.
product description
product name: sodium hydrosulphite(sodium hydrosulfite)
mol. formula: na2s2o4
molecular wt.:174.11
properties: the bulk specific weight is 0.7-1.0g/m3 , dissolve in water, slightly dissolve in ethanol. give off heat and cause combustion easily. spontaneous decomposition occurs when the temperature is higher than 85℃, heats up to 190℃cause detonation. self-ignition point is 250℃.
items | specifications |
appearance | free-flowing white crystalline powder |
chemical formula | na2s2o4 |
process | manufactured by sodium formate |
molecular wt. | 174 |
bulk density | 0.9 |
melting point : | >300℃ (decomposes) |
solubility | soluble in water, insoluble in alcohol and methanol. |
odour | none or slightly smell of sulfur dioxide |
shelf life | 10 months from the date of packing if stored in a sealed air-tight container. |
grades(contents) | low purity 74% min, & 80% min. |
standard purity 85% min & 88% min. | |
high purity 90% min. | |
application | i)strong reducing agent; |
packing | 50 kg net in iron drum with double plastic liners |
storage stability | keep in closed or covered containers when not in use. store in cool dry place with adequate ventilation. do not store near oxidants, acids or combustible materials. |
safety precautions | in case of fire, use sand or use carbon dioxide fire extinguisher. do not use water. |
shipping details | one fcl of 20 feet can accommodate 21 mt. |
un no. | 1384 |
imco class | 4.2 |
imdg page | 4262 |
hs code | 2831.101 |
cas no. | 7775-14-6 |
package class | ii |
warning | flammable! may spontaneously ignite in moist air or upon contact with water. |
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