疏松蜡 LMO（轻质机油） — Frequently Asked Questions

Slack Wax LMO是在润滑油提炼的溶剂脱蜡过程中产生的副产品。轻机油蒸馏分离液在溶剂（通常是甲基乙基酮或丙烷）的存在下被冷却，导致蜡质成分结晶。然后通过过滤将这些晶体与液体油分离，得到原生的松软蜡。所得产品保留了一定比例的残留油——在Bio Green Wax的规格中为10-25%——这将其与更精炼的石蜡区别开来。

LMO 硬蜡的 ASTM D-1500 颜色最高为 L1.0，这一标志意味着它在商业上可获得的石油蜡产品中属于最浅色的。'L' 前缀表示该产品比 ASTM 比较器标尺上的标准 1.0 颜色芯片更浅，在实践中呈现为近似无色或非常浅的麦秆黄色。这一浅颜色反映了 LMO 的低芳香烃含量和相对于更重的 硬蜡级别来说的高石蜡纯度。

主要区别在于油含量。完全精炼的石蜡含有不到0.5％的残留油，几乎无色无味，符合食品和化妆品级纯度标准。LMO型松软蜡保留10-25％的残留油，给予它一种较软、更粘稠的性质和略带黄色的色泽。LMO不适合用于食品或直接用于化妆品的接触，除非经过进一步加工，但它的价格明显更便宜，并且在许多油含量不是一个使其失去资格的因素的工业应用中发挥作用。

Slack Wax LMO 的熔点为 47–53°C（按照 ASTM D-87 测量）。这是在四种松软蜡级别（LMO、SPO、MMO、DAO）中最低的熔点，反映了其较轻的分子量和较低的碳链长度分布。凝固点（ASTM D-938）位于 46–53°C，正如预期的那样，对于一种主要的蜡质来说，其值与熔点接近。

Bio Green Wax Ltd 提供的松软蜡（Slack Wax）LMO 的油含量在 10–25% 之间，测量标准为 ASTM D-721。这是一个根据实际供应产品而非理论最大值量身定制的操作范围。在该范围内需要更紧密油含量的买家应与销售团队讨论具体批次需求，因为油含量会影响下游加工的一致性。

Slack Wax LMO在100°C下的动态粘度（kinematic viscosity）为3.1–4.2_centistokes（cSt），按照ASTM D-445进行测量。这是四个slack wax等级中最低的粘度，使得LMO在高温下最具流动性。此低粘度在需要将蜡泵送、混合或涂层的加工环境中是有益的——与MMO或DAO等更重的级别相比，减少了能耗和设备压力。

Slack Wax LMO的最低闪点为145°C， đo量方法采用Pensky-Martens Closed Cup (PMCC)方法，按照ASTM D-93标准。闪点表示加热蜡蒸气在火焰存在的情况下可以点燃的最低温度。闪点为145°C意味着LMO被归类为可燃物质，而不是易燃液体，但在熔化、加工和储存过程中仍应采取适当的预防措施。储存应远离明火和氧化物质。

Slack Wax LMO的硫含量最高为0.30％wt，如ASTM D-1552测量结果所示，这高于其他三种松软蜡等级（SPO，MMO，DAO），后者最高硫含量均为0.20％wt。对于大多数应用——蜡烛、纸张涂层、MDF防水——这一差异是微不足道的。然而，对于橡胶和轮胎应用，如果硫含量会干扰硫化化学反应，购买者应该评估0.30％的最高含量是否在其特定配方的可接受限度之内。

Slack Wax LMO具有广泛的工业应用，包括：蜡烛制造中的蜡扩展剂和基质蜡；火柴和引火器的浸润；中密度纤维板和刨花板的防水処理；橡胶化合中的加工助剂和抗臭氧剂；纸张和纸板的抑湿涂层；织物润滑剂和软化剂配方；蜡乳液制造；精炼石蜡的脱油作业的原料；以及复写纸和墨水制造。其较低的熔点和良好的流动性使其成为易于熔融加工的应用的首选Slack Wax级别。

是的，松软蜡LMO主要用于蜡烛制造，作为蜡的混合成分或延伸料，而不是单独的蜡烛蜡。它与完全精炼或半精炼的石蜡混合，可以调节硬度、熔池特性和成本。其浅色（ASTM ≤ L1.0）意味着它不会明显影响浅色蜡烛的视觉外观。由于其油含量可能会影响燃烧性能和香精载量，它不适合作为单独的蜡烛蜡，尤其是在高浓度时。

是的，Slack Wax LMO被用作橡胶配方中的加工助剂和抗臭氧剂。在橡胶配方中，蜡会迁移到硫化橡胶制品的表面形成一层薄的保护膜，以防止大气臭氧的降解——这是一种被称为静态臭氧保护的过程。LMO的轻分子量和流动性使其与橡胶混合工艺兼容。然而，购买者应该与他们的技术团队核实硫含量的要求，因为LMO的硫含量最高（0.30%wt）高于其他Slack Wax等级。

Yes, one of LMO's key industrial roles is as a deoiling feedstock for the production of fully refined paraffin wax. In deoiling plants, the residual oil in LMO is removed through further solvent dewaxing and filtration steps until the oil content drops below 0.5%, at which point the product meets fully refined paraffin specification. LMO's relatively low viscosity compared to heavier slack wax grades (SPO, MMO, DAO) reduces the energy required for chilling and filtration in the deoiling process, making it the preferred feedstock for this application.

No. Slack Wax LMO is not suitable for direct food contact, food coating, or pharmaceutical applications. Its oil content of 10–25% and residual aromatic compounds mean it does not meet the purity requirements of food-grade regulations (FDA 21 CFR, EU Regulation 10/2011) or pharmaceutical standards. For food, cosmetic, or pharmaceutical wax applications, fully refined paraffin wax (oil content <0.5%) should be specified instead.

Bio Green Wax Ltd operates as a B2B supplier of Slack Wax LMO in industrial bulk quantities. Minimum order quantities are discussed based on your specific requirements and destination. Please contact the sales team via biogreenwax.com or at info@biogreenwax.com to receive pricing and MOQ information tailored to your volume and logistics needs.

Bio Green Wax Ltd offers flexible international shipping terms for Slack Wax LMO, including FOB (Free on Board), CIF (Cost, Insurance and Freight), and DDP (Delivered Duty Paid). DDP is the most buyer-friendly option as it includes all freight, insurance, and import duty costs to the named destination. The most appropriate Incoterm depends on your location, logistics infrastructure, and preference for cost control. Contact us to discuss the best option for your shipment.

Bio Green Wax Ltd supplies full trade and compliance documentation with every shipment of Slack Wax LMO. Standard documents include a Certificate of Analysis (CoA) covering all ASTM-tested parameters (colour, melting point, oil content, viscosity, flash point, specific gravity, sulphur content), a Safety Data Sheet (SDS/MSDS), commercial invoice, packing list, and bill of lading. Additional documentation such as a Certificate of Origin or specific regulatory compliance documents can be arranged on request.

Slack Wax LMO should be stored in a cool, dry, well-ventilated location away from direct sunlight, heat sources, and open flames. As a combustible material with a flash point of minimum 145°C, it should be kept away from ignition sources during storage and handling. In solid form at ambient temperature, it is stable and non-reactive. Bulk storage in heated tanks is common in industrial settings, where temperatures should be maintained above the melting point (47–53°C) but well below the flash point. Containers should be kept sealed when not in use to prevent contamination.

Yes. Bio Green Wax Ltd is a UK-registered global B2B supplier and exports Slack Wax LMO to buyers across Europe, the Middle East, Asia, and Africa. We have experience handling international logistics for bulk wax shipments and can assist with documentation, compliance requirements, and preferred Incoterms. Visit biogreenwax.com or contact info@biogreenwax.com to discuss your country-specific requirements.