WULACHEM

R134a

Technical Data Sheet (TDS) · Refrigerant technical reference document
Data version: 2026.09.22 | Generated on: 2026-09-28

Identification

Chemical name1,1,1,2-Tetrafluoroethane
Common designationsR134a、HFC-134a、R-134a
CAS No.811-97-2
FormulaC2H2F4
UN No.UN 3159
GWP1430
ODP0
Safety classA1
Hazard classClass 2.2 non-flammable gas
FamilyHFC
Regulatory tierF-gas (high GWP, F-Gas regulated)

Basic physical properties

Molecular weight (g/mol)102
Triple point temp. (°C)-103
Critical temp. (°C)101
Critical pressure (MPa, abs)4
Critical density (g/cm³)0.512
Acentric factor0.33
Liquid relative density (20/4°C)1.21
Vapor relative density (air=1)3.5

Quality standard

IndicatorPremium gradeQualified grade
Purity, %≥99.9099.50
Water, %≤0.0010.001
Impurity limitChloride (Cl⁻) test pass
Acidity, %≤0.00010.0001
Non-volatile residue, %≤0.0050.01
Non-condensable gas, %≤1.51.5
Halogenated unsaturated hydrocarbon, %≤0.0040—

Applications

Mainly used as a refrigerant in room A/C, commercial refrigeration, cold-chain and heat-pump systems.

Safety & storage

Hazard class:Class 2.2 non-flammable gas

Store in a cool, dry, well-ventilated place away from heat and open flame; keep cylinders upright and secured against rolling or impact. Although non-flammable, avoid high temperature that raises cylinder pressure.

Recommended lubricant

requires POE oil

Alternatives

R1234yf, R513A, R450A or hydrocarbon R600a

Supplier

SupplierWulachem
Contactsales@wulachem.cn

Disclaimer

The values and limits in this Technical Data Sheet are taken from this site’s refrigerant property database (based on CoolProp reference data and relevant quality standards) and are provided for product selection and technical reference only. Before charging, storage and system integration, always verify against the latest official Safety Data Sheet (SDS) and the manufacturer’s technical documentation, and strictly follow applicable regulations and equipment manufacturer requirements. This site accepts no liability for any decisions or consequences based on this document.