VDF is a kind of colorless gas under normal temperature and pressure, nontoxic, flammable, with little ether odor.
Vinylidene Fluoride(VDF)
Conformable with:Q/DYS 007-2007
VDF is a kind of colorless gas under normal temperature and pressure, nontoxic, flammable, with little ether odor. It has the common gender of alkene, and can be polymerized and synthesized as intermediate.
Quality Specification
Items | Unit | Index | ||
High grade | 1st grade | Qualified | ||
Appearance | --- | colorless flammable gas, with little ether odor | ||
Purity, ≥ | % | 99.99 | 99.9 | 99.5 |
Moisture, ≤ | ppm | 100 | 100 | 100 |
Oxygen index, ≤ | ppm | 30 | 30 | 30 |
Acid index (HCl), ≤ | mg/kg | No | 10 | 30 |
Physical properties
Items | Unit | Index |
Chemical Name |
| 1,1-difluoroethylene |
CAS |
| 75-38-7 |
Molecular formula | --- | C2H2F2;CH2CF2 |
Structural formula | --- | CH2=CF2 |
Molecular weight | g/mol | 64.0 |
Boiling point(101.3KPa) | °C | -85.7 |
Melting point | °C | -144 |
Critical temperature | °C | 29.7 |
Critical Pressure | KPa | 4458.3 |
Liquid density(23.6°C) | g/ml | 0.617 |
Vapor pressure (20°C) | KPa | 3594.33 |
Explosive limit in air(volume), | % | 5.5~21.3 |
Toxicity LC50 | ppm | 128000 |
Danger Label |
| 4(flammable) |
Main Applications
VDF is one important fluoride monomer. It can be polymerized into PVDF,and copolymerize with perfluoropropylene and tetrafluoroethylene to get F26 and F246. VDF can also be used to prepare fluoride sulfonic compound which working as pesticide and special solvent.
Package, Transportation and Storage
1. VDF should be stored in jacketed stainless steel tank with persistent -35°C refrigerating salt brine.
2. Usually, VDF is forbidden to be stored in cylinder. When necessary, special high-pressure cylinder should be used. The cylinder material should be low temperature resistant.
3. During transportation, please tightly close cylinder valves with safety helmet. No Fire or smoke. Avoid exposure to sunshine during transportation in summer. Handle carefully while shipping, shock and collision avoided.
4. VDF is slightly poisonous. Forbidding inhaling.
