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这种石油蜡膏以凝固点而非熔点标定:按 ASTM D938 测定为 60–67 °C,批次证书上的结果为 62.6 °C。蜡中含油量(质量分数)须低于 13%(该批次测得 4.25%),色度按 ASTM D1500 色标限定为 0.5。100 °C 时运动粘度为 6.0 至 9.0 mm²/s,闪点为 200 °C 或以上。
蜡膏是在润滑油脱蜡过程中分离出的粗蜡。其常见用途是经脱油制成粗石蜡和石蜡;未经进一步精制时,它可用于刨花板和纤维板施胶用乳液、瓦楞纸板防潮涂层、蜡烛和引火物配混料以及橡胶配混。
锥入度和密度没有规定限值;证书报告按 ASTM D937 测得锥入度为 22(0.1 mm),15 °C 时密度为 0.8385 g/mL,因此对硬度或密度有要求的买方应事先商定限值。供货前,请确认安全数据表、物理形态、包装和批次证书,并在预期工艺中试用该蜡。
规格
Congealing point (ASTM D938)60–67 °C; 62.6 °C on the batch certificate
Oil in wax (ASTM D721)Below 13% by weight; 4.25% on the batch certificate
ASTM colour (ASTM D1500)0.5 max; L0.5 on the batch certificate
Kinematic viscosity at 100 °C (ASTM D445)6.0–9.0 mm²/s; 7.127 mm²/s on the batch certificate
Flash point (ASTM D92)200 °C min; 268 °C on the batch certificate
Cone penetration, 0.1 mm (ASTM D937)Reported; 22 on the batch certificate
Density at 15 °C (ASTM D1298)Reported; 0.8385 g/mL on the batch certificate
应用
Feedstock for de-oiling into scale and paraffin waxesWax emulsions for particleboard and fibreboardMoisture-resistant corrugated board coatingsCandle and firelighter blendsRubber compounding



