DOWEI

Dielectric breakdown (kV)

45

40

52

43

56

Viscosity (cSt) 40°C

9.2

39

113

29

33

Viscosity (cSt) 100°C

2.3

17

12

5.6

8

Flash point (°C)

147

300

276

270

324

Fire point (°C)

165

343

312

306

360

Specific heat

0.39

0.36

0.45

0.45

0.50

Pour point (°C)

- 50

- 55

- 21

- 50

- 21

Specific gravity

0.87

0.96

0.87

0.97

0.92

Biological oxygen demand (ppm)

6

0

6

24

250

Density at 20°C

< 0.895

0.91

< 0.895

Viscosity at 40°C mm²/s

< 11.0

< 12.0

< 11.0

Viscosity at – 30°C mm²/s

< 1800

< 1800

Pour Point °C

< - 45

< - 40

< - 45

Flash point PM °C

> 130

> 130

Flash point COC °C

> 145

Neutralisation value Mg KOH/g

< 0.03

< 0.03

< 0.03

Antioxidant content for uninhibited oils %

Not detectable

0.08

Not detectable

Water content %

< 0.003% for bulk

< 0.0035 %

< 0.003% for bulk

< 0.004% for drums

< 0.004% for drums

Interfacial tension nM/m

> 40

> 40

-

Breakdown voltage as delivered kV

> 30

-

> 30

Treated kV

> 50

> 70

-

Dielectric dissipation factor at 90°C

0.005

0.003 (at 100°C)

0.005

Oxidation stability

No comparable requirement

The comparisons are between the following national or international standards

IEC

International Electrotechnical Commission

ASTM

American Society for Testing Materials

BS

British Standard