Formula: CH2F2
or R32, Halocarbon 32
Difluoromethane is a colorless, flammable gas with a slight ether-like odor. It is shipped as a liquefied gas under its own vapor pressure (207 psig @ 70° F).
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Applications
Applications of difluoromethane include the following:
- Currently used as a substitute for R-410a in residential and commercial air conditioners in Japan, China, and India
- Plating agent and surface treating agent
- Plasma etching
- Heat transfer fluid
- Used in refrigerant blends
| Grade 3 | Grade 4 | |
|---|---|---|
| Purity | 99.9% | 99.99% |
| Nitrogen | < 300 ppmv | < 40 ppmv |
| Oxygen | < 50 ppmv | < 10 ppmv |
| Carbon Dioxide | < 5 ppmv | |
| Moisture | < 100 ppmv | < 5 ppmv |
| Other Halocarbons | < 60 ppmv | |
| Acidity | < 0.1 ppm/w | |
| Other Organics | < 700 ppmv |
**Moisture level guaranteed only when Electronic Fluorocarbons prepares the cylinders.
All concentrations are on a mol/mol basis unless otherwise stated.
Product sold on the basis of total impurities. Individual impurities may vary slightly.
| Chemical & Physical Properties | |
| Molecular Weight | 52.02 |
| Specific Volume | 7.19 cu.ft/lb |
| Pressure @ 70° F | 207 psig |
| Valve Outlet: CGA 350 | CGA 350 DISS 724 |
| Shipping Data | |
| DOT Name | Difluoromethane |
| Hazard Class | 2.1 |
| DOT No. | UN 3252 |
| DOT Label | Red, Flammable Gas |
| CAS No. | 75–10–5 |
| Cylinder Size | Fill Weight (lbs) |
| 44L/Size 200 | 65 |
| 16L/Size 80 | 25 |
| 7L/Size 35 | 15 |
*This gas not available for purchase online.
