ExxonMobil’s low viscosity SpectraSyn™ PAO Group IV category products are hydrogenated olefin oligomers manufactured by the catalytic polymerization of linear alphaolefins. They have well-defined, wax-free isoparaffinic structures.
The low viscosity SpectraSyn™ PAO products feature numerous performance advantages compared to mineral oils. These advantages include better low temperature properties (pour point and viscosity), low volatility, and improved thermal stability. Because of their excellent response to antioxidant additives, SpectraSyn™ PAO products can be formulated to provide very high oxidation resistance. SpectraSyn™ PAO products have high viscosity indices, which translate into improved flow at low temperatures and increased film thickness at high temperatures. In addition, low viscosity SpectraSyn™ PAO products are hydrolytically stable, have good compatibility with mineral oils and can be combined with other synthetic basestocks (e.g. esters or alkylated naphthalenes) for improved solvency and deposit control. All of these features make the low viscosity SpectraSyn™ PAO products attractive blend components for upgrading basestock quality.
ExxonMobil’s low viscosity SpectraSyn™ PAO products provide superior lubrication as the primary basestocks for synthetic lubricants used in passenger car engines, heavy-duty diesel engines, transmissions, gear boxes and a variety of industrial applications. SpectraSyn™ PAO can also be combined with our high viscosity SpectraSyn PAO and/or SpectraSyn Ultra™ PAO to meet a wide range of viscosity targets including wide cross-grade engine and automotive gear oils as well as various ISO VG industrial oils. SpectraSyn™ PAO should be considered for upgrading mineral oil basestocks and for other applications where high-quality, high-purity hydrocarbons are required.
SpectraSyn™ PAO products are registered worldwide, meet the FDA 21 CFR 178.3620(b) requirements for Technical White Oil, have USDA H1 approval for lubricants with incidental food contact, and are listed in the National Sanitation Foundation (NSF) White book.
| SpectraSyn™ | 2 | 2B | 2C* | 4 | 5* | 6 | 8 | 10 |
|---|---|---|---|---|---|---|---|---|
| Specific Gravity @ 15.6/15.6°C | 0.798 | 0.799 | 0.798 | 0.820 | 0.824 | 0.827 | 0.833 | 0.835 |
| Kinematic Viscosity @ 100°C, mm²/s (cSt) | 1.7 | 1.8 | 2.0 | 4.1 | 5.1 | 5.8 | 8.0 | 10.0 |
| Kinematic Viscosity @ 40°C, mm²/s (cSt) | 5 | 5 | 6.4 | 19 | 25 | 31 | 48 | 66 |
| Kinematic Viscosity @ -40°C, mm²/s (cSt)a | 262 | --- | --- | 2,900 | 4,920 | 7,800 | 19,000 | 39,000 |
| Viscosity Index | --- | --- | --- | 126 | 138 | 138 | 139 | 137 |
| Pour Point, °C | -66 | -54 | -57 | -66 | -57 | -57 | -48 | -48 |
| Flash Point, Open Cup, °C | 157 | 149 | >150 | 220 | 240 | 246 | 260 | 266 |
| Water, ppm | <50 | <50 | <50 | <50 | <50 | <50 | <50 | <50 |
| Refractive Index @ 25.0°Ca | 1.4418 | --- | 1.4400 | 1.4535 | --- | 1.4565 | 1.4605 | 1.4615 |
| Total Acid Number (TAN), mg KOH/g | <0.05 | <0.05 | <0.05 | <0.05 | <0.05 | <0.05 | <0.05 | <0.05 |
| SpectraSyn™ | 2 | 2B | 2C* | 4 | 5* | 6 | 8 | 10 |
|---|---|---|---|---|---|---|---|---|
| Appearance (B&C = Bright & Clear) | B&C | B&C | B&C | B&C | B&C | B&C | B&C | B&C |
| Color, ASTM | <0.5 | <0.5 | <0.5 | <0.5 | <0.5 | <0.5 | <0.5 | <0.5 |
| SpectraSyn™ | 2 | 2B | 2C* | 4 | 5* | 6 | 8 | 10 |
|---|---|---|---|---|---|---|---|---|
| Kinematic Viscosity @ 0°C, mm²/s (cSt)a | 19 | --- | --- | 100 | --- | 208 | 402 | 593 |
| Kinematic Viscosity @ -20°C, mm²/s (cSt)a | 42 | --- | --- | 392 | --- | 980 | 2,060 | 3,380 |
| Kinematic Viscosity @ -54°C, mm²/s (cSt)a | --- | --- | --- | 14,500 | --- | 68,500 | --- | --- |
| Apparent Viscosity @ -40°C by Mini-rotary Viscometer, cPa | --- | --- | --- | <5,000 | 4,200 | 6,500 | 16,200 | --- |
| Brookfield Viscosity @ -40°C, cPa | 360 | --- | --- | 2,500 | --- | 7,310 | 17,590 | 36,650 |
| Cold Cranking Simulator @ -25°C, cPa | --- | --- | --- | --- | --- | 1,410 | 2,880 | 5,080 |
| Cold Cranking Simulator @ -30°C, cPa | --- | --- | --- | 910 | --- | 2,260 | 4,800 | 8,840 |
| Cold Cranking Simulator @ -35°C, cPa | --- | --- | --- | 1,424 | 2,420 | --- | --- | --- |
| High-Temp. High-Shear Viscosity @ 150°C, cPa | --- | --- | --- | 1.46 | --- | 2.08 | 2.58 | --- |
| Surface Tension @ 24°C, mN/m, (dynes/cm)a | 28.0 | --- | 27.3 | 29.1 | --- | 29.7 | 29.8 | 30.2 |
| 2 | 2B | 2C* | 4 | 5* | 6 | 8 | 10 | |
|---|---|---|---|---|---|---|---|---|
| Specific Heat @ (Temperature °C)a | 0.55(39) | --- | --- | 0.53(37) | --- | 0.55(75) | 0.55(75) | 0.55(75) |
| Autoignition Temperature, °Ca | 350 | --- | --- | 351 | --- | 378 | 378 | --- |
| Density Correction Factor, (g/cc)/°Ca | 6.73 x 10⁻⁴ | --- | 6.47 x 10⁻⁴ | 6.41 x 10⁻⁴ | --- | 6.28 x 10⁻⁴ | 6.24 x 10⁻⁴ | 6.32 x 10⁻⁴ |
| Fire Point, °Ca | 176 | --- | 256 | --- | 266 | 286 | 296 | --- |
| Evaporation Loss 150°C for 22 hrs. wt.%a | 75.3 | --- | 1.6 | --- | 1.4 | 0.8 | 0.7 | --- |
| Evaporation Loss 205°C for 6.5 hrs. wt.%a | --- | --- | --- | --- | 10.3 | 5.5 | --- | --- |
| Noack Volatility, wt.% | --- | --- | --- | 14 | 6.8 | 6.4 | 4.1 | 3.2 |
| Thermal Conductivity @ [BTU/hr(ft)²(°F/ft)] (Temp °C)a | 0.0810(39) | --- | 0.0850(39) | --- | 0.0903(38) | 0.0906(38) | --- | --- |
| Vapor Pressure @ 150°C, mm Hg abs.a | 18 | 14.4 | --- | 0.23 | --- | 0.14 | 0.11 | --- |
| 2 | 2B | 2C* | 4 | 5* | 6 | 8 | 10 | |
|---|---|---|---|---|---|---|---|---|
| Aniline Point, °Ca | 100.8 | 103.7 | 104.5 | 119.2 | --- | 126.1 | 130.8 | 134.6 |
| Kauri-Butanol Value (KB)a | +4.0 | --- | --- | -3.8 | --- | -9.5 | -16.1 | -18.4 |
| Solubility Parameter @ 25°C, (cal/cc)0.5 b | 7.99 | --- | 8.04 | 8.09 | --- | 8.14 | 8.15 | 8.17 |
| 2 | 2B | 2C* | 4 | 5* | 6 | 8 | 10 | |
|---|---|---|---|---|---|---|---|---|
| Dielectric Constant @ 25°Ca | 2.08 | --- | --- | 2.10 | --- | 2.11 | 2.12 | --- |
| Dielectric Strength, kva | 43.1 | --- | --- | 43.6 | --- | 39.4 | 37.7 | 35.6 |
| Copper Corrosion @ 100°C for 3hrs.a | 1b | --- | 1b | 1b | --- | 1b | 1b | 1b |
| Demulsibility @ 82°C 40-40-0, mina | 0 | --- | --- | 0 | 0 | 0 | 0 | 0 |
| Foam, Seq. 1, mL/mLa | 0/0 | --- | 0/0 | 0/0 | --- | 15/0 | 25/0 | 70/0 |
a Single sample or two sample average determinations
b Calculated
* Contact sales representatives for information on SpectraSyn™ 2C & 5
For information on toxicology and safe handling of these products refer to the Material Safety Data Sheets, available on request or visit our website at http://www.exxonmobilsynthetics.com.
DOT Hazard Class: Not Regulated
DOT Hazard Labeling: None Required
ExxonMobil SpectraSyn™ PAO products are available in drums and in bulk. Samples are available upon request. Please call 1.800.682.8342 in the U.S., 32.2.722.36.50 in Brussels; 86.21.2407.5157 in Shanghai; 65.6885.8419 in Singapore or 81.3.6713.4040 in Tokyo. Or visit our website at http://www.exxonmobilsynthetics.com.