Technical Data Sheet (TDS) · Refrigerant technical reference document
Data version: 2026.09.22 | Generated on: 2026-09-28
Identification
Chemical name
Propane
Common designations
R290
CAS No.
74-98-6
Formula
C3H8
UN No.
UN 1978
GWP
3
ODP
0
Safety class
A3
Family
HC
Regulatory tier
Hydrocarbon (natural refrigerant)
Basic physical properties
Molecular weight (g/mol)
44.096
Triple point temp. (°C)
-187.625
Critical temp. (°C)
96.740
Critical pressure (MPa, abs)
4.2483
Critical density (g/cm³)
0.2205
Acentric factor
0.1521
Liquid relative density (20/4°C)
0.5001
Vapor relative density (air=1)
1.522
Quality standard
Indicator
Premium grade
Qualified grade
Purity, %≥
99.9
99.9
Water, %≤
0.001
0.001
Acidity, %≤
0.0001
0.0001
Non-volatile residue, %≤
0.05
0.05
Non-condensable gas, %≤
1.5
1.5
Applications
Used in domestic/commercial refrigeration and chillers; also as blowing agent, aerosol propellant and process refrigerant.
Safety & storage
Highly flammable gas! Store cool and ventilated, strictly away from ignition sources, sparks and heat; use explosion-proof electricals, prevent static discharge and spark from metal impact; cylinders upright and secured.
Recommended lubricant
compatible with mineral/POE oil
Supplier
Supplier
Wulachem
Contact
sales@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.