Technical Data Sheet (TDS) · Refrigerant technical reference document
Data version: 2026.09.22 | Generated on: 2026-09-28
Identification
Chemical name
Pentafluorobutane (HFC-365mfc)
Common designations
R365MFC
CAS No.
406-58-6
Formula
C4H5F5
UN No.
UN 3163
GWP
804
ODP
0
Safety class
A1
Family
HFC
Regulatory tier
F-gas (mid GWP)
Basic physical properties
Molecular weight (g/mol)
148.075
Triple point temp. (°C)
-34.150
Critical temp. (°C)
186.853
Critical pressure (MPa, abs)
3.2637
Critical density (g/cm³)
0.4738
Acentric factor
0.3774
Liquid relative density (20/4°C)
1.2676
Vapor relative density (air=1)
5.111
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
Mainly used as a refrigerant in room A/C, commercial refrigeration, cold-chain and heat-pump systems.
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.