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| Hydrosol 500 |  |
Hydrosol 500 Naphthenic Base Oils, produced by Houston Refining, is a high pressure export. |
| Tests | Test Method | Typicals |
| Viscosity, CST @ 40C | D445 | 97.42 |
| Viscosity, SUS @ 100F | D2161 | 518.5 |
| Gravity, API, 60°F | D4052 | 22.3 |
| Density @ 15C, KG/DM3 | D4052 | 0.9195 |
| Flash Point, COC, F | D92 | 404 |
| Pour Point, F | D97 | -24 |
| Color, ASTM | D1500 | L1.0 |
| Aniline Point, F | D611 | 184.4 |
| Total Acid No., MG KOH/G | D974 | 0.04 |
| Aromatic Carbon Atoms, %Ca | D2140 | 12 |
| Naphthenic Carbon Atoms, %Cn | D2140 | 43 |
| Paraffinic Carbon Atoms, %Cp | D2140 | 45 |
| Sulfur, Mass % | D2622 | 0.07 |
| Appearance | D4176 | B & C |
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