SINOPEC 4521-1 Semi-synthetic Refrigeration Compressor Oil is the lubricant dedicated to ammonia refrigeration system and blended with semi-synthetic base oil of special structure and high efficiency additive without acid.
Advantages
♦ Excellent low temperature fluidity, ensuring little oil entered system returning back to compressor
♦ Relatively high viscosity index, ensuring good lubricity and sealing of equipment in wide temperature range
♦ Relatively low acid number, not likely to react with refrigerant to produce harmful mater such as deposit
♦ Good anti-rust and anti-corrosion performance, preventing parts of compressor from corrosion
Applications
♦ Suitable for lubrication of rotary screw, reciprocating and rotary vane compressors in ammonia refrigeration system in food and chemical engineering industries
♦ Applied temperature range: -35 ºC~100 ºC, possibly reaching 130 ºC in short time
Typical properties
Items
|
4521-1 semi-synthetic
refrigeration compressor oil |
|||
32
|
46
|
68
|
||
Kinematic viscosity(40 ºC)mm2/s
|
30.29
|
45.56
|
63.54
|
|
Viscosity index
|
120
|
118
|
115
|
|
Flash point (COC), ºC
|
232
|
236
|
246
|
|
Pour point, ºC
|
-40
|
-40
|
-42
|
|
Acid number, mgKOH/g
|
0.01
|
0.01
|
0.01
|
|
Corrosion (T2Cu, 100ºC, 3h), level
|
Pass
|
Pass
|
Pass
|