Classifications
UN Number: 3159
Class: 2.2
Uses and Features
- Wide use in household and commercial refrigeration, and automotive air-conditioning. Properties make R134a suitable for use in medium temperature food cabinets, water chillers and fountains, heat pumps and dehumidifiers
- Increasing use as a replacement for CFC-12.
- Blowing agent for various foams.
- Propellant for aerosol pharmaceuticals, lacquers, deodourants, perfumes, mousses, airfresheners, insecticides, cleaning and other household products.
Material Compatibility
Most common materials are suitable for use under normal conditions in a dry system. At high temperatures, use stainless steel or lnconel to resist corrosive breakdown products. Avoid using alloys with more than 2% magnesium (i.e some aluminium alloys) especially when moisture is present. May react violently with sodium, potassium, barium and other alkali or alkaline earth metals. Flexible hoses or gaskets should not contain natural rubber as rapid withdrawals of gas/liquid can extract compounding ingredients and it also suffers from excessive swelling.
Oil Compatibility
Physical Properties
| Chemical Formul |
1 ,1,1 ,2-tetrafluoroethane |
| Boiling Point |
| °C@101.3kPa |
-26.1 |
| °F@14.7psia |
-14.9 |
| Critical Temperature |
| °C |
101.1 |
| °F |
214.0 |
| Purity |
99.9 |
| % by weight(min) |
| Water Content |
10 |
| ppm by weight(max) |
| Acidity |
1.0 |
| ppm by weight(max) (as HCI) |
Non Condensable Gasses
Content Measured on Vapour Phase |
1.5 |
| % by volume(max) |
| Residues at High Boiling Point |
0.01 |
| % by volume(max) |
| Chloride |
pass |
| No visible turbidity |
