Product Description
Applications
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Product Description
The Skydrol 500 series of fluids has the longest service history among phosphate ester products. The first version, Skydrol 500, was introduced in 1952. Steady improvements to the formulation led in 1977 to the current version, Skydrol™ 500B-4 which contains the same breakthrough anti erosion additive and acid scavenger found in Skydrol™ LD-4 . Skydrol 500B-4 is the most worker friendly of the aviation phosphate esters. This has given the product enormous popularity for use in work shops and indoor test stands..
Typical Properties
| Property | Test Method | Typical Value, Units | |
| General | |||
| Acid Number (mg KOH/g) | 0.10 Maximum | ||
| Appearance | Clear, oily liquid | ||
| Autoignition Temperature | ASTM D 2155 | 460 °C (860 °F ) Minimum | |
| Color | Purple, essentially equivalent to intensity and hue standard | ||
| Elemental Content | |||
| Calcium | 10 ppm, Maximum | ||
| Chlorine | 50 ppm, Maximum | ||
| Potassium | 30 ppm, Maximum | ||
| Sodium | 10 ppm, Maximum | ||
| Sulfur | 1185-1460 ppm | ||
| Fire Point | |||
| COC | 191 °C (375 °F ) Minimum | ||
| Flash Point | |||
| COC | 177 °C (350 °F ) Minimum | ||
| Moisture | 0.20 % Maximum | ||
| Particle Contaminationa | |||
| 15-25 micron size | 5,700 Maximum | ||
| 25-50 micron size | 1,012 Maximum | ||
| 50-100 micron size | 180 Maximum | ||
| 5-15 micron size | 32,000 Maximum | ||
| Over 100 micron size | 32 Maximum | ||
| Pour Point | -62 °C (-80 °F ) Maximum | ||
| Specific Gravity | |||
| @ 25°C/25°C | 1.050-1.062 | ||
| Viscosity | |||
| @ 38°C (100°F) | 11.40-12.40 cSt | ||
| @ -54°C (-65°F) | 2900 cSt Maximum | ||
| @ 99°C (210°F) | 3.68-4.00 cSt | ||
aNAS 1638 particle counts per AS4059F
Comments
Properties reported here are typical of average lots. Eastman makes no representation that the material in any particular shipment will conform exactly to the values given.
