Heavy Slack wax

Heavy Slack Wax 5-8% and Its Procedure of Manufacturing with the Best quality

Heavy Slack Wax, particularly with an oil content of 5-8%, plays a vital role in various industrial applications. As a byproduct of the refining process of crude oil into lubricating oil, slack wax contains a significant amount of oil and wax. The presence of oil in slack wax affects its properties and potential uses. In this blog, we will delve into what Heavy Slack Wax 5-8% is, its manufacturing process, applications, advantages, disadvantages, and future prospects. We will also highlight why Paraffin Co. is a trusted supplier of high-quality Heavy Slack Wax.

What is Heavy Slack Wax 5-8%?

Heavy Slack Wax is a petroleum-derived product that is composed primarily of paraffin wax and oil. The designation “5-8%” refers to the oil content within the wax, meaning that 5-8% of the slack wax’s composition is oil, while the remaining portion is solid paraffin wax. The oil content influences the physical characteristics of the slack wax, including its melting point, hardness, and flexibility.

Properties of Heavy Slack Wax 5-8%

The specific properties of Heavy Slack Wax 5-8% depend on its oil content and the refining process used to produce it. Some of the key properties include:

Manufacturing Procedure of Heavy Slack Wax 5-8%

The production of Heavy Slack Wax 5-8% involves several steps, starting from crude oil refining to the final processing of slack wax. Here is an overview of the manufacturing procedure:

  1. Crude Oil Distillation

The process begins with the distillation of crude oil in a refinery. Crude oil is heated in a distillation column, where it is separated into different fractions based on boiling points. The heavier fractions, including those suitable for lubricating oil production, are further processed to extract wax components.

  1. De-waxing

The de-waxing process is crucial for producing slack wax. In this step, the lubricating oil fraction is cooled to a low temperature to crystallize the wax. The solidified wax crystals are then separated from the oil using filtration or centrifugation. The resulting wax-oil mixture is known as slack wax.

  1. Solvent Extraction

To further reduce the oil content and improve the quality of the slack wax, solvent extraction is employed. In this process, solvents such as methyl ethyl ketone (MEK) or toluene are used to dissolve the oil, leaving behind the solid wax. The solvent is then removed through evaporation, resulting in a lower oil content slack wax.

  1. Hydrogenation

Hydrogenation is an optional refining step used to stabilize the slack wax and improve its color and odor. In this process, hydrogen gas is introduced to react with the wax, saturating any unsaturated hydrocarbons and removing impurities. This step enhances the stability and appearance of the final product.

  1. Blending and Filtration

The final step involves blending the slack wax to achieve the desired oil content (5-8%) and other properties. The wax is then filtered to remove any remaining impurities, ensuring a consistent and high-quality product.

Applications of Heavy Slack Wax 5-8%

Heavy Slack Wax 5-8% has a wide range of industrial applications due to its unique properties. Some of the key applications include:

  1. Candle Manufacturing

Slack wax is widely used in the production of candles. Its lower melting point and ability to hold fragrance make it ideal for various types of candles, including container candles, pillar candles, and votive candles. The presence of oil helps in achieving a smooth burn and good scent throw.

  1. Rubber and Tire Industry

In the rubber and tire industry, Heavy Slack Wax is used as a processing aid and plasticizer. It helps improve the flexibility and workability of rubber compounds, enhancing the performance of tires and other rubber products.

  1. Board Sizing

In the production of particleboard and medium-density fiberboard (MDF), slack wax is used as a sizing agent. It helps in binding the wood particles together, improving the board’s water resistance and dimensional stability.

  1. Emulsions and Coatings

Slack wax is also used in the formulation of wax emulsions and coatings. These emulsions are applied to various surfaces, including paper, textiles, and wood, to provide a protective and water-resistant layer.

  1. Petroleum Jelly and Cosmetics

Slack wax can be refined further to produce petroleum jelly, which is used in a wide range of cosmetic and personal care products. The oil content in slack wax helps in achieving the desired consistency and emollient properties of petroleum jelly.

  1. Lubricants and Greases

Slack wax is used as a base material in the production of lubricants and greases. Its oil content provides the necessary lubrication properties, making it suitable for various industrial and automotive applications.

  1. Packaging and Corrugated Boxes

In the packaging industry, slack wax is used as a coating material for corrugated boxes and other packaging materials. It enhances the water resistance and durability of the packaging, ensuring the protection of goods during transportation and storage.

Advantages of Heavy Slack Wax 5-8%

Heavy Slack Wax 5-8% offers several advantages for industrial applications:

Disadvantages of Heavy Slack Wax 5-8%

Despite its numerous advantages, Heavy Slack Wax 5-8% has some limitations:

Future Prospects of Heavy Slack Wax 5-8%

The future of Heavy Slack Wax 5-8% looks promising, with ongoing research and development aimed at improving its properties and expanding its applications. Some potential future prospects include:

Why Paraffin Co. is a Trusted Supplier for Heavy Slack Wax?

Paraffin Co. is a renowned supplier of high-quality slack wax, trusted by various industries for their exceptional products and services. Here are some reasons why Paraffin Co. stands out as a reliable supplier:


Heavy Slack Wax 5-8% is a versatile and essential product in various industrial applications. Its unique properties, including its adjustable oil content, make it suitable for uses ranging from candle manufacturing to rubber processing and packaging. While it has some limitations, ongoing research and development are focused on improving its quality and expanding its applications.

Paraffin Co. stands out as a trusted supplier of high-quality slack wax, offering exceptional products and services to meet the diverse needs of industries worldwide. With a commitment to quality, sustainability, and customer support, Paraffin Co. is well-positioned to continue leading the industry in providing reliable and innovative slack wax solutions.


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