|
Standard:Q/JHGS 20-2002
Uses: Material of Fluoro-refrigerant 141b &142b, or material of coating and Vinyon N, or polyvinylidene chloride emulsion and resin .
Technical requirements:
| Index name |
Index value |
| Top-grade |
First grade |
Qualified product |
| Vinylidene chloride , % ≥ |
99.90 |
99.60 |
99.50 |
| Low boiling matter , % ≤ |
0.04 |
0.08 |
0.12 |
| High boiling matter , % ≤ |
0.15 |
0.30 |
0.35 |
| Moisture, mg/kg ≤ |
100 |
250 |
300 |
| PH value ≥ |
4.0 |
/ |
/ |
Molecular formula:C2H2Cl2
Relative molecular mass :96.93
Properties: colorless transparent liquid,
Packing & Storage: steel barrel with small mouth, steel cylinder; the steel cylinder should wear protecting cap. Do not mix with oxidant and halogen. Avoid insolation.
|
