Eastman Skydrol® LD4 Fire Resistant Hydraulic Fluid

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Eastman Skydrol® LD4 Fire Resistant Hydraulic Fluid
Categories:	Fluid
Material Notes:	Product Description: Skydrol LD-4 was introduced in 1977 , and is well known around the world. At the time of its introduction it was a breakthrough product, solving problems of valve erosion and thermal stability common in earlier fluids. Its excellent thermal stability under real world conditions has given it a reputation as the gold standard among Type IV fluids. Skydrol LD-4 features low density, excellent thermal stability, valve erosion prevention, and deposit control. Application/Uses: Aviation hydraulic systems Information provided by Eastman
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Physical Properties	Metric	English	Comments

Density	1.003 - 1.013 g/cc	0.03624 - 0.03660 lb/in³
Viscosity Measure	3.66 - 4.0 cSt @Temperature 99.0 °C	3.66 - 4.0 cSt @Temperature 210 °F
	10.65 - 11.65 cSt @Temperature 38.0 °C	10.65 - 11.65 cSt @Temperature 100 °F
	<= 2000 cSt @Temperature -54.0 °C	<= 2000 cSt @Temperature -65.2 °F

Chemical Properties	Metric	English	Comments
Total Acid Number	<= 0.10	<= 0.10	[mg KOH/g]

Thermal Properties	Metric	English	Comments
Pour Point	<= -62.0 °C	<= -79.6 °F
Flash Point	>= 160 °C	>= 320 °F

Processing Properties	Metric	English	Comments
Moisture Content	<= 0.20 %	<= 0.20 %

Descriptive Properties
Appearance	Clear, oily liquid
Color	Purple
Content	<10 ppm		Calcium
	<10 ppm		Sodium
	<30 ppm		Potassium
	<50 ppm		Chlorine
	1185-1540 ppm		Sulfur
Fire Point	>177°C

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PEATM5584 / 222778

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