Di-capped Polyalkylene Glycol
Double-end-capped Poly Alkylene Glycol (PAG) base oil designed for refrigeration applications, e.g., automotive air-conditioning compressors with HFC refrigerants (R-134a), and HFO refrigerants(R-1234yf).
Description
Introduction
CHORUS offers double-capped polyalkylene glycol (PAG) for automotive air-conditioning compressor Oils (AC refrigerant oils).
Synthetic Poly Alkylene Glycol (PAG) base oil with a double-capped structure, specifically designed for refrigeration applications, e.g., automotive air-conditioning compressors with HFC refrigerants (R-134a, R-404a, R-410a, and R-407c), and Hydro fluoro olefins (HFO) refrigerants(R-1234yf).
Features
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Excellent miscibility with R-134a and good miscibility with various HFC, HFO refrigerants, including R-404A, R-410A, R-407C, and R-1234yf.
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Excellent hydrolytic stability, reduced hygroscopicity compared to uncapped PAGs, minimizing potential issues associated with ice formation in capillary tubes and moisture-induced degradation.
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High Viscosity Index (VI): Ensures the formation of a stable lubricating film at elevated temperatures to protect against wear. And, it's relatively lower viscosity promotes superior fluidity and refrigerant miscibility during cold starts.
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Enhanced thermal & oxidative stability, even under conditions of high temperature and high humidity.
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Excellent miscibility with R-134a and other refrigerants across a wide operating temperature range. Miscibility temperature bands typically span from -60°C to 0°C and from 0°C to 80°C.
Specifications
|
Items |
DiC PAG-46 |
DiC PAG-56 |
DiC PAG-68 |
DiC PAG-100 |
DiC PAG-150 |
Method |
|
Viscosity, mm²/s (40°C) |
43-50 |
53-61 |
62-72 |
90-106 |
135-159 |
ASTM D445 |
|
Viscosity, mm²/s (100°C) |
10 |
12 |
14 |
18 |
26 |
ASTM D445 |
|
Appearance |
Colourless to yellowish transparent liquid |
Visual |
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|
Capping rate |
>85% |
ASTM E326 |
||||
|
Moisture (%) |
≤0.03 |
ASTM E1064 |
||||
|
Acid Value (mgKOH/g) |
≤0.03 |
ASTM D974 |
||||
|
Flash point (°C) |
≥205 |
ASTM D92 |
||||
|
VI (Viscosity Index) |
≥190 |
ASTM D2270 |
||||
|
Colour APHA |
≤80 |
ASTM D1209 |
||||
|
K+, Na+ (PPM) |
≤10 |
Q/CH 019 |
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Package, Handle & Storage
● N.W.:200kg/ drum( galvanized).
● Stored in a dry and ventilated place
Why Choose Double-end-capped PAG base oil?
| Property | Dual-End-Capped PAGs | Mono-End-Capped PAGs |
| Thermal Stability | Higher (capping reduces oxidation/degradation risk) | Lower (free hydroxyl groups prone to oxidation) |
| Hydrolytic Stability | Excellent (resistant to moisture attack) | Poor (hydroxyl groups react with water) |
| Refrigerant Compatibility | Broader (compatible with HFCs, CO₂, HFOs, etc.) | Limited (may react with certain refrigerants) |
| Lubricity | Superior (stable molecular structure) | Good (but may degrade at high temps) |
| Hygroscopicity | Very low (strong hydrophobicity) | Higher (hydrophilic hydroxyl groups) |
Hot Tags: di-capped,polyalkylene glycol,double-end-capped, PAG, refrigeration, air-conditioning, Compressor Oil, , PAG for Compressor Oil, PAG for Gear Oil, Polyether, Polyether PAG
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