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R600a Refrigerant Specification

Technical Data Sheet(TDS) Isobutane C₄H₁₀ R600a, and.

Document No.:ZJ-TDS-R600A-2026 Version:V1.0 Issue date2026-09-24 Next review:2027-09-24

1 Product Identification

Item Value
Product NameR600a Refrigerant
Chemical NameIsobutane
English NameIsobutane
Molecular FormulaC₄H₁₀
Molecular Weight58.12
CAS Registry Number75-28-5
EINECS No.200-857-2
UN Number1969
Transport Hazard ClassClass 2.1, flammable gas
ASHRAE Safety ClassificationA3(Low toxicity, flammable)
Reference BasisManufacturer data; the batch COA governs

Reference Basis: Compiled from manufacturer data (safety classification per GB/T 7778, ASHRAE 34 / ISO 817)

2 Physical & Chemical Properties

R600a Typicaldata, system and,.

Item Typical Value
AppearanceColorless, transparent liquefied gas
Odorclass Odor
Boiling Point (101.3 kPa)-11.7 ℃
Freezing Point-159.6 ℃
Critical Temperature134.7 ℃
Critical Pressure3.64 MPa
Critical Density225 kg/m³
Vapor Pressure (25 C, absolute)0.350 MPa
Liquid Density(25 ℃)551 kg/m³
Saturated Vapor Density(25 ℃)9.5 kg/m³
Latent Heat of Vaporization (at boiling point)366 kJ/kg
Liquid Specific Heat(25 ℃)2.28 kJ/(kg·K)
Vapor Specific Heat(25 ℃, 101.3 kPa)1.70 kJ/(kg·K)
Liquid Thermal Conductivity(25 ℃)0.093 W/(m·K)
Vapor Thermal Conductivity(25 ℃)0.0169 W/(m·K)
Liquid Viscosity(25 ℃)0.16 mPa·s
Vapor Viscosity(25 ℃)0.0074 mPa·s
Surface Tension(25 ℃)9.9 mN/m
Water Solubility(25 ℃)Insoluble
Auto-Ignition Temperature460 ℃
Flammability Limits in Air (vol.%)1.8 % ~ 8.4 %
Minimum ignition energyapprox. 0.25 mJ
OEL (8 h TWA)1000 ppm
Ozone Depletion Potential (ODP)0
GWP (100 yr, IPCC AR5)approx. 3
Atmospheric Lifetimeapprox. 0.02 years

3 Quality Specifications & Test Methods

R600a Parameter, Batch COA.

Item Parameter Test Method
AppearanceColourless and clear, free of suspended matter and mechanical impuritiesVisual inspection
Purity≥ 99.50 % (High-purity grade ≥ 99.90 %)Gas chromatography GC-FID
Moisture≤ 10 ppmKarl Fischer coulometric method
Sulfur Content≤ 1 ppmMicrocoulometry
Evaporation Residue≤ 0.01 %Gravimetric method
(olefin)≤ 0.05 %Gas chromatography
Non-Condensable Gas(, 25 ℃)≤ 1.5 %Gas chromatography
OdorOdorOlfactory test

4 Comparison with Common Refrigerants

Comparison Item R600a(this product) R134a R290
CompositionSingle compound C₄H₁₀Single compound CH₂FCF₃Single compound C₃H₈
ODP000
GWP(100 years, AR5)approx. 31430approx. 3
ASHRAE Safety ClassificationA3(Flammable)A1A3(Flammable)
Boiling point-11.7 ℃-26.3 ℃-42.1 ℃
Vapor Pressure(25 ℃)0.350 MPa0.665 MPa0.951 MPa
Relative chargeapprox. R134a 45 %Baseline 100 %approx. R134a 50 %
Compatible lubricant/ POE /POE/ POE
Maximum charge150 g( IEC 60335-2-24)No such restriction—
Current selectionrefrigeratordisplay cabinet refrigerantand commercial refrigerationexisting installed basedisplay cabinet and heat pumpLow

5 Packaging Specifications

Package Type Specification Filling Ratio Valve Connection Application
disposable cylinder5 kg(customizable 2 kg / 6.5 kg)≤ 0.49 kg/LW21.8-14(customizable CGA / DIN)refrigerator Servicing and small-batch use
steel cylinder180 kg(customizable 400 kg)≤ 0.49 kg/LW21.8-14bulk supply
cylinder pallet12 × 5 kgPer cylinderW21.8-14Distribution via service networks
ISO ISO tankapprox. 12 tper ISO tankISO tankconnectionand Transport

Filling Ratioper"", steel cylinderper.

6 Applications

  • refrigerator and display cabinet
  • commercial refrigeration and cold storage
  • See the Technical Data Sheet (TDS) for full specifications.
  • polyurethanerigid foamfoam blowing(foam blowingapprox.)

Equipment Compatibility & Charging Advice

  • R600a A3 Flammable refrigerant, charging IEC 60335-2-24 ( 150 g).
  • equipment and serviceexplosion-proof: explosion-proof,, ventilation and Flammable.
  • R600a and,, POE, system and and HFC system.
  • serviceexplosion-proofcharging and recovery equipment, enclosedemissions, 5 open flames and High temperatureheat source.
  • charging R134a(approx. 45 %), retrofit or Specification,.

7 Storage & Transport

  • Storage,, ventilation, 40 ℃, ignition source, heat source and.
  • steel cylinder, and,,, and.
  • 2.1 class Flammable, perexplosion-proof equipment, Flammable and explosion-proofventilation.
  • and oxygen,, Flammable, explosion-proof and.
  • and, Low 0.05 MPa.
  • Transportper Danger 2.1 class, Firefighting and, and.

8 Safety & Handling

  • Flammability and explosion riskR600a A3 Flammable refrigerant, Explosive limits 1.8 % ~ 8.4 %, Minimum ignition energyapprox. 0.25 mJ,, explosion-proof, ventilation.
  • Spillageignition sourceventilation,;explosion-proof and;explosion-proofleak detection,.
  • Firefightingor carbon dioxide Firefighting, steel cylinder. Spillage Flame,.
  • Charge limitcharging IEC 60335-2-24 ( 150 g), charging;service or explosion-proof.
  • frostbite ProtectionLiquefied gasfrostbite, and;frostbite 40 ℃.
  • Inhalation andVapourasphyxiation, and, fresh airoxygen;Skin contact Liquefied gasperfrostbite.

9 Quality Assurance & Shipping Documents

  • Batch COA, Purity( or ), Moisture, Acidity and Evaporation Residue.
  • Moisture, and Low temperature.
  • 12 months, Batch, No. and.
  • perthird-party test report(SGS / ), SDS Description REACH, RoHS.

10 Frequently Asked Questions

R600a refrigeratorservice Risk?

Flammability and explosion risk. R600a Explosive limits 1.8 % ~ 8.4 %, Minimum ignition energyapprox. 0.25 mJ, sparks,, explosion-proof. serviceventilation explosion-proof, explosion-proofcharging and recovery equipment, system refrigerantrecoverynitrogen.

R600a Can it be used with R134a ?

. Operating pressure, charging and, R600a system compressor and perexplosion-proof. R134a R600a system; R600a explosion-proof R134a.

Why is R600a charging 150 g?

IEC 60335-2-24 A3 Flammable refrigerant: Spillage,. charging, refrigeratordisplay cabinet R600a charging 150 g.

R600a Shelf life?

steel cylinder, Storage, R600a Shelf Life 24 months., steel cylinder and.

Disclaimer
Specificationdata Typical,;Parameter Batch COA. and, or or, equipment and Regulations.

| Reviewed by: | Approved by: | Hubei Zhongjin Fluorine Chemical Co., Ltd.

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