Research Article
Physical Characteristics of Tetrahydroxy and Acylated Derivatives of Jojoba Liquid Wax in Lubricant Applications
Table 1
Room temperature solubility and kinematic/dynamic viscosity and viscosity index (VI) of the neat jojoba oil and ester derivatives.
| | Property | ASTM method | Jojoba oil | Jojoba esters | | Acetate | Propionate | Valerate |
| | RT sol (% w/w) | Visual | — | — | — | — | | PAO-6 | — | >50 | <3.2 | >50 | >50 | | OSuO | — | >50 | >50 | >50 | >50 | | Density (g/cm3) | D-7042 | — | — | — | — | | 40°C | — | 0.8487 ± 0.0002 | 0.9617 ± 0.0000 | 0.9618 ± 0.0002 | 0.9435 ± 0.0001 | | 100°C | — | 0.8101 ± 0.0000 | 0.9189 ± 0.0001 | 0.9161 ± 0.0000 | 0.9011 ± 0.0000 | | kVisc (mm2/s) | D-7042 | — | — | — | — | | 40°C | — | 21.8 ± 0.0 | 176.2 ± 0.2 | 39.9 ± 0.0 | 76.8 ± 0.2 | | 100°C | — | 5.9 ± 0.0 | 18.5 ± 0.1 | 7.8 ± 0.0 | 12.5 ± 0.0 | | VI | D-2270 | 242 | 117 | 170 | 161 |
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