Table 1. Properties of Hydrocarbon Waxes as Defined by TR-29.
| property | units | test method | requirements |
|---|---|---|---|
| chemical type | see footnotea | hydrocarbon waxa | |
| congealing point | °F (°C) | ASTM D938 | 149–169 (65–76) |
| viscosity at 210 °F | cSt | ASTM D445 | 5.5–7.5 |
| kinematic carbon number distribution of normal hydrocarbons | % | ASTM D5442 | min 80% C26–C50 |
| <20% C26 and lower | |||
| <10% above C50 | |||
| zero above C85 | |||
| non-normal paraffin | % | ASTM D5442 | 10–50 |
| needle penetration at 77 °F | ASTM D1321 | 10–18 | |
| oil content | % | ASTM D721 | max 1% |
| flash point | °F (°C) | ASTM D92 | 449 (230) |
| color (Saybolt) | ASTM D156 | min +10 | |
| acid number | ASTM D1386 | max 0.5 | |
| density | g/cm3 | ASTM D792 | 0.915–0.940 |
| physical appearance | small uniform flake, prill or powderb |
a
Hydrocarbon waxes containing linear and branched chains with carbon numbers from C20 to C60.
b
This requirement is not applicable if the wax is added as liquid.