GALDEN® HT-270

Galden® HT is a line of dielectric fluids with boiling points ranging from 55° C to 270° C. The excellent dielectric properties of these perfluorinated polyethers (PFPE) and their high chemical stability combined with the capacity to operate at very low as well as elevated temperatures, make them the best heat transfer fluids for the aggressive conditions found in semiconductor, electronic, and solar industries.

 

Galden® HT PFPE:

Property	Units	HT55	HT70	HT80	HT110	HT135	HT170	HT200	HT230	HT270
Boiling Point	°C	55	70	80	110	135	170	200	230	270
Pour Point	°C	<– 125	<– 110	– 110	– 100	– 100	– 97	– 85	– 77	– 66
Density	g/cm3	1.65	1.68	1.69	1.71	1.72	1.77	1.79	1.82	1.85
Kinematic Viscosity	cSt	0.45	0.50	0.57	0.77	1.00	1.80	2.40	4.40	14.00
Vapor Pressure	torr	225	141	105	17	5.8	0.8	0.2	0.03	<10-2
Specific Heat	cal/g·°C	0.23	0.23	0.23	0.23	0.23	0.23	0.23	0.23	0.23
Heat of Vaporization		22	17	17	17	16	16	15	15	15
Refractive Index	cal/g	1.280	1.280	1.280	1.280	1.280	1.280	1.281	1.283	1.283
Thermal Expansion	cm3/cm3·°C	0.0011	0.0011	0.0011	0.0011	0.0011	0.0011	0.0011	0.0011	0.0011
Surface Tension	dyne/cm	14	14	16	16	17	18	19	19	20
Thermal Conductivity	W/m·K	0.065	0.065	0.065	0.065	0.065	0.065	0.065	0.065	0.065
Dielectric Strength	kV		40	40	40	40	40	40	40	40
Dielectric Constant		1.86	1.86	1.89	1.92	1.92	1.94	1.94	1.94	1.94
Average Molecular Weight	g/mol	340	410	430	580	610	760	870	1020	1550
Solubility of Water	ppm (wt)	< 10	< 10	< 10	< 10	< 10	< 10	< 10	< 10	< 10
Solubility of Air	cm3 gas	26	26	26	26	26	26	26	26	26