1.1Â This test method covers the determination of the saponification number of synthetic waxes and natural waxes.
1.2Â This test method is applicable to Fischer Tropsche, microcrystalline, polyethylene, and Montan Ester waxes.
1.3 Certain synthetic waxes, notably copolymers of ethylene, exhibit poor reproducibility when running saponification values. Reproducibility can be improved if cooking time in 7.2 is extended from 3 h to 18–20 h.
1.4 Some oxidized polyethylene and other waxes with a melt temperature above 100°C may give poor reproducibility.
1.5Â Some dark-colored (Gardner Color 14) waxes may obscure the color change of the indicator, resulting in poor reproducibility.
| SDO | ASTM: ASTM International |
| Document Number | D1387 |
| Publication Date | Oct. 1, 2012 |
| Language | en - English |
| Page Count | 2 |
| Revision Level | 89(2012) |
| Supercedes | |
| Committee | D21.02 |