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Standard:GB/T 3637-93
Uses:It can be used to produce Sulfite and can be used as material of organic synthesis, or can be used as cryogen, antiseptic.
Technical requirements:
| Index name |
Index |
| Top-grade |
First grade |
Qualified product |
| Appearance |
colorless or slight yellow transparent liquid |
| Sulfur dioxideSO2), % ≥ |
99.97 |
99.90 |
99.60 |
| Residue , % ≤ |
0.010 |
0.040 |
0.20 |
| Moisture, % ≤ |
0.020 |
0.060 |
0.20 |
| As), % ≤ |
0.000004 |
-- |
-- |
Note: liquid sulfur dioxide which is made of sulfur should check the assay of As every season.
* GB/T 3637-93is similar to Γ OCT2918-79(84)
* Juhua liquid sulfur dioxide is international standard product of Zhejiang province, No.:ZBCZ10473.
Molecular formula:SO2
Relative molecular mass :64.06
Properties:it is colorless transparent liquid. gas, with irritation to human,condensing temperature is -10.09°C, crystallization temperature is -72.7°C, Density in 20°C is 1.3828g/cm3.
Packing & Storage: steel gas cylinder , ampoule bottle in common wood box; transport in the regulation of railway ministry of China. Do not mix with inflammable/flammable matter, oxidant, reductant, food chemicals. Avoid insolation.
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