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Multigard Propylene Glycol

(used in systems with copper, brass or aluminum)

Performance Specifications

This is a heat transfer fluid with an organic acid based formulation which contains no nitrites, amines, borates, or phosphates. This will provide a pH of 8.0 - 8.5 in 50% heat transfer fluids. It is designed for multi-metal systems made entirely or partly of aluminum which protects all commonly used metals that are compatable with most plastic and elastomers.

Our Multigard PG can be used in any heating/cooling system but is usually recommended for high aluminum content systems operating over 65°C. Azoles are included to supplement "soft" metal protection (copper, brass, solder and aluminum). The organic salts used will coat all metal surfaces and protect it from corrosion. The water used to dilute can be low hardness, city or well water although deionized or distilled water is best.

  
                SPECIFIC GRAVITY, 60°F                
                1.035
              
                PROPYLENE GLYCOL, VOLUME %
                96
              
                FLASH POINT, °F
                220
              
                COLOUR
                PURPLE

MIXING TABLE

VOL. % PROPYLENE GLYCOL	VOL. % FINISHED PRODUCT	FREEZE POINT, °F	BOILING POINT, °F
15	15.6	23.6	215
30	31.2	3.7	220
40	41.6	-2.7	223
50	52.1	-34.6	226
60	62.5	-60	228

PERFORMANCE SPECIFICATIONS

PHYSICAL PROPERTY	TEMP °F SOLUTION	15% GLYCOL SOLUTION	30% GLYCOL SOLUTION	40% GLYCOL SOLUTION	50% GLYCOL SOLUTION	60% GLYCOL SOLUTION
THERMAL CONDUCTIVITY [BTU/(HR-FT3)( °F/FT)]	40	0.265	0.253	0.234	0.215	0.199
THERMAL CONDUCTIVITY [BTU/(HR-FT3)( °F/FT)]	180	0.307	0.291	0.267	0.241	0.22
THERMAL CONDUCTIVITY [BTU/(HR-FT3)( °F/FT)]	250	0.31	0.293	0.269	0.245	0.224
SPECIFIC HEAT [BTU/LB-°F )]	40	0.885	0.862	0.82	0.774	0.724
SPECIFIC HEAT [BTU/LB-°F )]	180	0.933	0.915	0.883	0.849	0.816
SPECIFIC HEAT [BTU/LB-°F )]	250	0.958	0.944	0.913	0.882	0.845
VISCOSITY, CENTIPOISE	40	3.11	3.59	4.94	6.81	9.93
VISCOSITY, CENTIPOISE	180	0.59	0.66	1.82	0.96	1.09
VISCOSITY, CENTIPOISE	250	0.37	0.4	0.47	0.55	0.59
DENSITY, (LB/FT3)	40	65.19	65.71	66.61	67.5	68.33
DENSITY, (LB/FT3)	180	62.9	63.31	64.1	64.83	65.55
DENSITY, (LB/FT3)	250	61.05	61.42	62.15	62.81	63.44