WULACHEM

R600a

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

Identification

Chemical nameIsobutane (2-methylpropane)
Common designationsR600A
CAS No.75-28-5
FormulaC4H10
UN No.UN 1969
GWP3
ODP0
Safety classA3
Hazard classClass 2.1 flammable gas
FamilyHC
Regulatory tierHydrocarbon (natural refrigerant)

Basic physical properties

Molecular weight (g/mol)58.122
Triple point temp. (°C)-159.420
Critical temp. (°C)134.660
Critical pressure (MPa, abs)3.6265
Critical density (g/cm³)0.2255
Acentric factor0.1835
Liquid relative density (20/4°C)0.5569
Vapor relative density (air=1)2.006

Quality standard

IndicatorPremium gradeQualified grade
Purity, %≥99.099.0
Water, %≤0.0020.002
Acidity, %≤0.00010.0001
Non-volatile residue, %≤0.010.01
Non-condensable gas, %≤1.51.5

Applications

Used in domestic/commercial refrigeration and chillers; also as blowing agent, aerosol propellant and process refrigerant.

Safety & storage

Hazard class:Class 2.1 flammable gas

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

must be compatible with mineral/POE oil

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.