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What is hydrogenated rosin

What is hydrogenated rosin

Hydrogenated rosin is one of the rosin modified products. The conjugated double bonds of abietic resin acids in rosin are partially or completely saturated with hydrogen gas under a catalyst, certain temperature, and pressure.

Hydrogenated rosin is an important rosin modified product with good oxygen resistance, low brittleness, high thermal stability, and light color. Hydrogenated rosin is widely used in industries such as adhesives, synthetic rubber, coatings, inks, papermaking, electronics, and food. Mainly used in rubber, food, medicine, electronics, paper making, building materials, etc.

Unilong offers various grades of hydrogenated rosin, including premium and first grade. Level 2, can be selected according to your needs.

Items Ordinary hydrogenated rosin High-purity hydrogenated rosin
Grade Super Grade


First level


Second level


Super Grade


Super Grade


Appearance Transparent
Acid Value mg/g  Min 1262.0 160.0 158.0 164.0 160.0
Softening Point(R&B),℃ Min 72.0 71.0 70.0 73.0 72.0
Alcohol Insoluble Substance,% Max 0.020 0.030 0.040 0.020 0.030
Unsaponifiable Matter,%  Max 7.0 8.0 9.0 7.0 8.0
Abietic Acid.% Max 2.00 2.50 3.00 0.50 1.00
Dehydroabietic Acid,% Max 10.0 10.0 15.0 8.00 10.00
Absorbed by Oxygen,% Max 0.20 0.20 0.30 0.20 0.20
Tetrahydro Resin Acid.% Min —— 30.00
Depends on the choice of customers

What are the uses of hydrogenated rosin?

Hydrogenated rosin is often used as a plasticizer in the adhesive industry for hot melt, pressure sensitive, and rubber type adhesives

In the paint industry, such as automotive coatings prepared from deeply hydrogenated rosin as raw material

In the food industry, it can be used as a chewing gum matrix to ensure long-term storage without discoloration; Hydrogenated rosin can also be used to make fruit protective coatings.

In papermaking, hydrogenated rosin can be used to make high-grade paper with good water resistance and light resistance. In the pharmaceutical industry, hydrogenated rosin can be used as a tackifier for ointments.

In the cosmetics industry, hydrogenated rosin can be used as liquid lipstick; In shampoo, containing hydrogenated rosin can increase hair shine.

We are not unfamiliar with rosin, so what is the difference between hydrogenated rosin and rosin? How should we choose these two products? First, let’s take a look at the differences between them.

Differences in properties between hydrogenated rosin and rosin

Hydrogenated rosin, also known as demethylated rosin, is a product obtained by hydrogenation reaction of rosin after partial removal of methyl groups. Due to the increase of C-H bonds in hydrogenated rosin, this substance has better stability and high temperature resistance, and its melting point is also relatively higher. In contrast, ordinary rosin contains more methyl groups, making it prone to volatilization and producing irritating odors. Hydrogenated rosin has relatively no such problem.

Differences in the Use of Hydrogenated Rosin and Rosin

Due to its excellent properties and stability, hydrogenated rosin is widely used in fields such as inks, coatings, adhesives, and rubber. Rosin is mainly used in the production of daily necessities such as aromatherapy and pixels, as well as in the fields of traditional Chinese medicine and capsules in the pharmaceutical industry.

Differences in production methods between hydrogenated rosin and rosin

The production process of hydrogenated rosin requires the removal of methyl groups and hydrogenation reactions, while rosin production is obtained through steps such as extraction, distillation, and cooling of liquid rosin. Therefore, the production process of hydrogenated rosin is relatively complex.

In summary, although hydrogenated rosin and rosin are both products derived from pine resin, there are significant differences in their properties, uses, and production methods. In practical applications, people need to choose suitable products based on different needs.

Unilong is a high-quality manufacturer in China. Our hydrogenated rosin is one of the rosin modified products. While ensuring product quality, we are also committed to product innovation and providing you with the best products. Our service philosophy is that we are not only a manufacturer, but also your production partner.

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