EG50

Prop

Base
@25°C

Base
@35°C

Base
@45°C

Base
@55°C

Synano
@25°C

Synano
@45°C

Synano
@35°C

Synano
@55°C

Impr.

OCP
Std.

Thermal Conductivity (mW/mK) 

387

393

399

403

420

426

431

435

+8% (avg)

xxx

Dynamic Viscosity
(Pa·s)

3.60E-03

2.60E-03

2.00E-03

1.60E-03

3.59E-03

2.60E-03

1.98E-03

1.58E-03

-1% (avg)

xxx

Property

Base
@20°C

Base
@40°C

Base
@60°C

Synano
@20°C

Synano
@40°C

Synano
@60°C

Impr.

OCP
Std.

Density
(kg/m³)

1086

1075

1063

1095

1084

1073

+1% (avg)

xxx

Specific Heat Capacity 
(J/kg·K)

3377

3442

3506

3445

3505

3560

+1.8% (avg)

xxx

EG30

Property

Base
@20°C

Base
@40°C

Base
@60°C

Synano
@20°C

Synano
@40°C

Synano
@60°C

Impr.

OCP Standard

Thermal conductivity (W/m·K) 

470

1053

488 

503 

511 

522 

+7% (avg)

xxx

Density
(kg/m³)

1022

1044

1034

1064

1054

1045

+1% (avg)

xxx

Dynamic viscosity
(Pa·s)

0.00227

0.00135 

0.00084 

0.00224 

0.001335 

0.000833 

-1.1% (avg)

xxx

Specific heat capacity 
(J/kg·K)

3791 

3837 

3884 

3849 

3889 

3929 

+1.35% (avg)

xxx

PG25

Technical specifications

Tested according to ASTM and IEC standards.

Property

Base
@20°C

Base @40°C

Base
@60°C

Synano
@20°C

Synano
@40°C

Synano
@60°C

Impr.

OCP
Stand.

Thermal conductivity (W/m·K) 

473

488

503

504

519 

533 

+6.6% (avg)

xxx

Density
(kg/m³)

1022

1015

1003

1028

1021

1008 

+0.6% (avg)

xxx

Dynamic viscosity
(Pa·s)

0.00258

0.00143

0.00093

0.00251

0.00140

0.00092

-2.0% (avg)

xxx

Specific heat capacity 
(J/kg·K)

3967

3997

4027

4008

4035

4060

+0.93% (avg)

xxx

Old Ultra

Technical specifications

Tested according to ASTM and IEC standards.

Property

Standard

Baseline

Synano GTL high conc.

Synano GTL low conc.

Improvement

Thermal conductivity (W/m·K) 

ASTM
D7896-19

0.142

0.159

0.155

+12-9%

Viscosity @40°C (cSt) 

ASTM
D445

10

7.9

7.7

-21-24%

Density @40°C (g/cm³) 

ASTM
D4052

0.7923

0.7987

0.7945

+0.8-0.3%

Specific heat cap. (J/kg·K) 

—

2270

2340

2310

+3-1%

Breakdown voltage (kV) 

IEC 60156

30KV

66KV

57KV

+120-90%

Flash point (°C) 

ASTM-D92

200°C

182°C

178°C

-18°C due to
additive liquids

Dissipation factor (tan δ) 

IEC 60247

0.001

0.11

0.005

Quite high / similar to base

Dielectric constant 

IEC 60247

2.1

2.15

2.1

Similar

Color

—

Transparent

White

Translucent white

—

Odor 

—

Characteristic

Same as base

Same as base

—

PAO

Technical specifications

Tested according to ASTM and IEC standards.

Property

Standard

Baseline

Synano PAO high conc.

Synano PAO low conc.

Improve-ment

OCP Standard

Thermal conductivity (W/m·K) 

ASTM
D7896-19

0.142

0.155

0.150

+9-5%

xxx

Viscosity @40°C (cSt) 

ASTM
D445

5.1

5.19

5.15

Similar to base

xxx

Density @40°C (g/cm³) 

ASTM
D4052

0.7820

0.7928

0.7892

+1.4-0.9%

xxx

Specific heat cap. (J/kg·K) 

—

2100

2150

2130

+2.4-1.4%

xxx

Breakdown voltage (kV) 

IEC 60156

45KV

65KV

56KV

+44-24%

xxx

Flash point (°C) 

ASTM-D92

164

172

168

+8-4°C 

xxx

Dissipation factor (tan δ) 

IEC 60247

0.001

0.017

0.006

Quite high / similar to base

xxx

Dielectric constant 

IEC 60247

2

2.13

2.12

Similar

xxx

Color

—

Transparent

White

Translucent white

—

xxx

Odor 

—

Characteristic

Same as base

Same as base

—

xxx

GTL

Technical specifications

Tested according to ASTM and IEC standards.

Property

Standard

Baseline

Synano GTL high conc.

Synano GTL low conc.

Improve-ment

OCP Standard

Thermal conductivity (W/m·K) 

ASTM
D7896-19

0.142

0.159

0.155

+12-9%

xxx

Viscosity @40°C (cSt) 

ASTM
D445

10

7.9

7.7

-21-24%

xxx

Density @40°C (g/cm³) 

ASTM
D4052

0.7923

0.7987

0.7945

+0.8-0.3%

xxx

Specific heat cap. (J/kg·K) 

—

2270

2340

2310

+3-1%

xxx

Breakdown voltage (kV) 

IEC 60156

30KV

66KV

57KV

+120-90%

xxx

Flash point (°C) 

ASTM-D92

200°C

182°C

178°C

-18°C due to
additive liquids

xxx

Dissipation factor (tan δ) 

IEC 60247

0.001

0.11

0.005

Quite high / similar to base

xxx

Dielectric constant 

IEC 60247

2.1

2.15

2.1

Similar

xxx

Color

—

Transparent

White

Translucent white

—

xxx

Odor 

—

Characteristic

Same as base

Same as base

—

xxx

PG50

Property

Base
@20°C

Base @40°C

Base
@60°C

Synano
@20°C

Synano
@40°C

Synano
@60°C

Impr.

OCP
Stand.

Thermal conductivity (W/m·K) 

473

488

503

504

519 

533 

+6.6% (avg)

xxx

Density
(kg/m³)

1022

1015

1003

1028

1021

1008 

+0.6% (avg)

xxx

Dynamic viscosity
(Pa·s)

0.00258

0.00143

0.00093

0.00251

0.00140

0.00092

-2.0% (avg)

xxx

Specific heat capacity 
(J/kg·K)

3967

3997

4027

4008

4035

4060

+0.93% (avg)

xxx