Technical Data Sheet (TDS) · Refrigerant technical reference document
Data version: 2026.09.22 | Generated on: 2026-09-28
Identification
Chemical name
Carbon dioxide (CO2)
Common designations
R744
GWP
1
ODP
0
Safety class
A1
Family
自然工质
Regulatory tier
Natural refrigerant
Basic physical properties
Molecular weight (g/mol)
44.010
Triple point temp. (°C)
-56.558
Critical temp. (°C)
30.978
Critical pressure (MPa, abs)
7.3721
Critical density (g/cm³)
0.4676
Acentric factor
0.2239
Liquid relative density (20/4°C)
0.7734
Vapor relative density (air=1)
1.519
Quality standard
Indicator
Limit
Water
≤10 ppm
Acidity (as HCl)
≤1 ppm (as HCl)
Non-condensable gas
≤1.5 % (v/v, @25°C)
High-boiling residue
≤0.01 %
Particulates (visually clean)
visually clean
Chloride test
pass
Other volatile impurities
≤0.5 %
Per AHRI 700 uniform purity requirements (applies to all refrigerants and blends).
Applications
Natural refrigerant for commercial/industrial refrigeration, heat pumps and mobile A/C in transcritical cycles.
Safety & storage
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.
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.