Dimeric Acid
Your Leading Dimeric Acid Supplier
Jiangsu Heli Oil Chemistry Technology Co.,Ltd. is located in Funing Economic Development Zone, Jiangsu Province, which is a professional manufacture engaged in non-edible plant oil productions research,development,sales as one of the AAA level credit enterprises.
Why choose us?
Our factory
The company covers an area of 18,000 square meters, construction area of 8,000 square meters. The company has more than 60 sets of production equipments, with a storage capacity of more than 5,000 tons. Annual output of more than 50,000 tons.
Our certification
It has successfully passed iso9001:2015 quality management system certification and iso4500:2018 occupational health and safety management system certification.
Product application
Our core products are widely used in surfactants, plasticizers, paints and coatings, inks, anti-wear agents, flotation agents for mineral processing, lubricants, daily chemical detergents and other industries.
Rich products
The main products are low freezing point fatty acid, diesel anti-wear agent, oleic acid, stearic acid, dimeric acid, tall oil fatty acid, etc.

Dimer acids, or dimerized fatty acids, are dicarboxylic acids prepared by dimerizing unsaturated fatty acids obtained from tall oil, usually on clay catalysts. The CAS number of the material is [61788-89-4]. Dimer acids are used primarily for synthesis of polyamide resins and polyamide hot melt adhesives. They are also used in alkyd resins, adhesives, surfactants, as fuel oil additives, lubricants, etc. It is a light yellow or yellow viscous transparent liquid.
Dimer acid usually contains predominantly a dimer of oleic acid. It is also called C36 dimer acid.
Application of Dimeric Acid
Applications in Surface Coatings
One of the primary uses of dimer acid is in the production of alkyd resins. These resins are mainly used for synthetic paintings and coatings, particularly in the construction industry. Alkyd resins offer excellent properties like durability, gloss, and adhesion, making them a preferred choice for both indoor and outdoor applications.
Role in Lubricants
Dimer acid also finds its application in the formulation of oil additives and lubricants. The high molecular weight and unique structure of dimer acid contribute to enhanced lubricity and thermal stability. These characteristics make it an ideal component in automotive and industrial lubricants.
Fuel Additives and More
The versatility of dimer acid extends to its role as a surfactant in fuel oil. It helps in improving the fuel’s flow properties and combustion efficiency. The compound is also used in the formulation of adhesives and hot melt resins, which are employed in various manufacturing processes.
Dimer acid is a key ingredient in the production of adhesives. Its unique chemical structure allows it to form strong bonds, making it a preferred choice for heavy-duty applications. The adhesives find their use in automotive, construction, and even in the aerospace industry.
Surfactants and Cleaning Agents
Beyond its role in coatings and lubricants, dimer acid is also used in the production of surfactants. These surfactants are employed in cleaning agents, detergents, and even in personal care products. The compound’s effectiveness in breaking down oils and fats makes it a valuable component in these applications.
Dimer acid production methods
Drying oil, semi-drying oil and other vegetable oils, such as soybean oil, cottonseed oil, rice bran oil containing high linoleic acid, oleic acid natural oils, fatty acid obtained by purification, and then by intermittently pressure catalytic polymerization or continuous catalytic polymerization or intermittent discharge atmospheric oxygen methanol vapor polymerization processes in the system.
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Principal properties: |
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- Light yellow transparent thick fluid. |
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- Adhesive force. |
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- Good flexibility,anti-chemicals oroperties. |
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- Nontoxic, no irritation. |
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- Anti-temperature and fine smooth surface. |
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- He polymer has fine flexibilty, sealing properties, airproof and fine adhesive force. |
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Storage |
Store at RT,away from moisture |
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General tips |
Please select the appropriate solvent to prepare the stock solution according to the solubility of the product in different solvents; once the solution is prepared, please store it in separate packages to avoid product failure caused by repeated freezing and thawing.Storage method and period of the stock solution: When stored at -80°C, please use it within 6 months; when stored at -20°C, please use it within 1 month. To increase solubility, heat the tube to 37°C and then oscillate in an ultrasonic bath for some time. |
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Shipping Condition |
Evaluation sample solution: shipped with blue ice. All other sizes available: with RT, or with Blue Ice upon request. |
Technical indicators
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Item |
Polyacid |
Industrial Dimeric Acid |
Refined Dimeric Acid |
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HL-10 |
HL-60 |
HL-80 |
HL-4017 |
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Color (Gardner) |
5 Max |
8 Max |
8 Max |
8 Max |
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Acid Value (mgKOH/g) |
180-195 |
189-200 |
190-198 |
190-198 |
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Saponification Value (mgKOH/g) |
183-200 |
192-202 |
192-200 |
192-200 |
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Viscosity (mpa,s,25℃) |
800-1300 |
5500-6500 |
6000-8500 |
6500-9500 |
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Moisture (%) |
1.5 Max |
0.2 Max |
0.2 Max |
0.2 Max |
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Content |
Monacid (%) |
25-35 |
2-6 |
6 Max |
6 Max |
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Dimer (%) |
60-68 |
75-82 |
78 Min |
78.5 Min |
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Trimer (%) |
5-15 |
15-22 |
18 Max |
18.5 Max |
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Exposure controls/personal protection
General protective and hygienic measures
Keep away from foodstuffs, beverages and feed.
Immediately remove all soiled and contaminated clothing.
Wash hands before breaks and at the end of work.
Avoid contact with the eyes.
Avoid contact with the eyes and skin.
Breathing equipment
In case of brief exposure or low pollution use respiratory filter device. In case of intensive or longer exposure use respiratory protective device that is independent of circulating air.


Protection of hands
Protective gloves
The glove material has to be impermeable and resistant to the product/ the substance/ the preparation.
Due to missing tests no recommendation to the glove material can be given for the product/ the preparation/ the chemical mixture.
Selection of the glove material on consideration of the penetration times, rates of diffusion and the degradation.
Material of gloves
The selection of the suitable gloves does not only depend on the material, but also on further marks of quality and varies from manufacturer to manufacturer.
FAQ
We're well-known as one of the leading dimeric acid manufacturers and suppliers in China. If you're going to buy high quality dimeric acid made in China, welcome to get more information from our factory.
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