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| HR Tufflo® 500 |  |
HR Tufflo 500 is a Naphthenic Base Oil product sold exclusively by Calumet Specialty Products. |
| Tests | Test Method | Typicals |
| Viscosity, CST @ 40C | D445 | 94.0 |
| Viscosity, SUS @ 100F | D2161 | 505.0 |
| Gravity, API, 60°F | D4052 | 22.6 |
| Density @ 15C, KG/DM3 | D4052 | 0.918 |
| Flash Point, COC, F | D92 | 400 |
| Pour Point, F | D97 | -20 |
| Color, ASTM | D1500 | L1.5 |
| Aniline Point, F | D611 | 184.0 |
| Total Acid No., MG KOH/G | D974 | 0.06 |
| Aromatic Carbon Atoms, %Ca | D2140 | 13 |
| Naphthenic Carbon Atoms, %Cn | D2140 | 40 |
| Paraffinic Carbon Atoms, %Cp | D2140 | 47 |
| Sulfur, Mass % | D2622 | 0.06 |
| Appearance | D4176 | B & C |
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