Industrial / Energy Fluids

XCELTHERM® SX800

Silicone Heat Transfer Fluid

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Typical Properties

Engineering Properties

Safety Data Sheet

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Terms and Conditions

Typical Properties

Key Operating Temperatures	XCELTHERM® SX800
Bulk Operating Temperature, maximum	400°C		750°F
Maximum Film Temperature	427°C		800°F
Pour Point	-60°C		-76°F
Flash Point (Pensky Martens Closed Cup) (ASTM D93)	162°C		324°F
Flash Point by Cleveland Open Cup (ASTM D92)	177°C		350°F
Fire Point by Cleveland Open Cup	193°C		380°F
Autoignition Temperature	385°C		725°F
Physical Properties	XCELTHERM ® SX800
Appearance		Clear, colorless
Odor		Characteristic
Composition	Polydimethylsiloxane
Kinematic Viscosity, mm 2 /s (cSt) at 25°C (77°F) at 40°C (104°F) at 100°C (212°F)		9.8 7.5 3.40
Average Molecular Weight		1250 g/mol
Moisture Content, maximum		100 ppm
Density at 25°C (77°F)	936 kg/m 3		(7.76 lbs/gal)
Specific Gravity at 25°C/25°C (77°F/77°F)		0.93
Coefficient of Thermal Expansion at 200°C (392°F)	0.00098/°C		0.00054/°F
Refractive Index at 25°C (77°F)		1.399
Dielectric Constant at 100 cycles at 23°C (73.4°F)		2.68
Acid Number		0.00 mg∙KOH/g
Viscosity - Temperature Coefficient		0.56
Heat of Combustion	28,659 kJ/kg		12,300 BTU/lb
Vapor Pressure at 600°F	596 kPa		86.5 psia
Critical Temperature	367°C		692°F
Critical Pressure	10.8 atm		10.9 bar
Critical Volume	0.0032 m3/kg		0.0515 3/lb
Specific Heat at 25°C (77°F)	1,507 J/(kg-K)		0.36 BTU/(lb-°F)
Specific Heat at 100°C (212°F)	1,658 J/(kg-K)		0.396 BTU/(lb-°F)
Thermal Conductivity at 40°C (104°F)	0.14 W/(m-K)		0.081 BTU/(hr- -°F)
Thermal Conductivity at 100°C (212°F)	0.12 W/(m-K)		0.0687 BTU/(hr- -°F)
Data represents typical laboratory samples and are not guaranteed for all samples.
XCELTHERM® is a registered trademark of Radco Industries, Inc.
© 2024 Radco Industries, Inc. \| All rights reserved

Engineering Properties

°C	°F	cP	mm 2/s (cSt)	kg/m 3	lbs/ft 3	J/g-K	BTU/lb-°F	W/m-K	BTU/ft-hr-°F	kg/cm 2	psia
-40	-40	60	61	991	61.87	1.506	0.3597	0.1468	0.0848
-20	-4	29	30	975	60.89	1.540	0.3678	0.1428	0.0825
0	32	16.1	16.9	960	59.91	1.574	0.3760	0.1388	0.0802	0.00	0.00
20	68	10.1	10.8	944	58.93	1.608	0.3841	0.1348	0.0779	0.00	0.00
40	104	6.9	7.5	928	57.95	1.642	0.3922	0.1308	0.0756	0.00	0.02
60	140	5.0	5.5	913	56.97	1.676	0.4003	0.1268	0.0733	0.01	0.10
80	176	3.8	4.2	897	55.99	1.710	0.4084	0.1228	0.0710	0.02	0.32
100	212	3.0	3.4	881	55.01	1.744	0.4166	0.1188	0.0686	0.06	0.83
120	248	2.4	2.8	865	54.03	1.778	0.4247	0.1148	0.0663	0.13	1.80
140	284	1.99	2.4	850	53.05	1.812	0.4328	0.1108	0.0640	0.24	3.46
160	320	1.68	2.02	834	52.07	1.846	0.4409	0.1068	0.0617	0.43	6.08
180	356	1.44	1.77	818	51.09	1.880	0.4490	0.1028	0.0594	0.70	10.01
200	392	1.25	1.57	803	50.11	1.914	0.4572	0.0988	0.0571	1.10	15.62
220	428	1.10	1.41	787	49.13	1.948	0.4653	0.0948	0.0548	1.64	23.38
240	464	0.98	1.27	771	48.15	1.982	0.4734	0.0908	0.0525	2.37	33.78
260	500	0.88	1.16	756	47.17	2.016	0.4815	0.0868	0.0502	3.33	47.39
280	536	0.79	1.07	740	46.19	2.050	0.4896	0.0828	0.0478	4.56	64.83
300	572	0.72	1.00	724	45.21	2.084	0.4978	0.0788	0.0455	6.10	86.80
320	608	0.66	0.93	709	44.23	2.118	0.5059	0.0748	0.0432	8.02	114.04
340	644	0.60	0.87	693	43.25	2.152	0.5140	0.0708	0.0409	10.36	147.36
360	680	0.55	0.82	677	42.27	2.186	0.5221	0.0668	0.0386	13.19	187.66
380	716	0.51	0.78	661	41.29	2.220	0.5302	0.0628	0.0363	16.58	235.87
400	752	0.48	0.74	646	40.31	2.254	0.5384	0.0588	0.0340	20.60	293.01
Data represents typical laboratory samples and are not guaranteed for all samples.
XCELTHERM® is a registered trademark of Radco Industries, Inc.
© 2024 Radco Industries, Inc. \| All rights reserved