DOS (Dioctyl Sebacate) Plasticizer High-Quality Plasticizer

Short Description:

Chemical Formula : C26H59O4
Cas No. 122-62-3

Description

DOS is a mono constituent substance organic origin, obtained by esterification of Sebacic acid and 2-ethylhexyl alcohol. This substance acts as primary monomeric plasticizer. 

Applications

DOS is used in a lot of applications in the thermoplastic industries due to maintain very good flexibility and functionality at low temperatures over PVC and its polymers modification, ethyl cellulose, cellulose nitrate, chlorinated rubber, and nitrile rubber.

PVC products: Commonly used in the production of various soft PVC products that require cold resistance, such as PVC film, artificial leather, wire and cable sheaths, etc. In PVC film, it can keep the film soft and transparent at low temperatures, which is suitable for the use of agricultural film in cold seasons; in wire and cable sheaths, it can improve the flexibility and crack resistance of the sheath in low temperature environments, ensuring the safe use of wires and cables in cold areas.

Rubber products: It can be used for the processing of natural rubber and synthetic rubber, can improve the processing performance of rubber, reduce its hardness, improve its flexibility, cold resistance and aging resistance, and make rubber products more suitable for various application scenarios, such as rubber seals, hoses, tires, etc. in low temperature environments.

Other fields: It can also be used in coatings, inks, adhesives and other fields. In coatings, it can be used as a plasticizer to improve the film-forming property, flexibility and adhesion of coatings; in inks, it can improve the fluidity and transferability of inks, making printed products have better gloss and flexibility; in adhesives, it helps to improve the adhesion and flexibility of adhesives to different materials.

Characteristics

Excellent low temperature performance: DOS has good cold resistance, which can make plastic products maintain good flexibility and softness in low temperature environment, and is not easy to harden and become brittle. Its brittle temperature can be as low as -55℃ or below.

Good heat resistance: It has good thermal stability at higher temperatures, which can inhibit the thermal degradation and discoloration of plastic products during processing and use to a certain extent, and can be used for a long time in the temperature range of 100℃ - 120℃.

Low volatility: It has low volatility. During the use of plastic products, it can be retained in the product for a long time, and continue to play a plasticizing role, reducing the performance changes and environmental pollution caused by the volatilization of plasticizers.

Excellent water resistance and oil resistance: It has good water resistance and oil resistance, which enables plastic products to maintain good stability when in contact with water or oil, and is not easy to be swollen or dissolved by water or oil, thereby maintaining its physical properties and appearance quality.

Good compatibility with polymers: It has good compatibility with polyvinyl chloride (PVC), vinyl chloride-vinyl acetate copolymer, polystyrene, natural rubber, synthetic rubber and other polymers. It can be evenly dispersed in the polymer matrix to form a stable system and effectively play a plasticizing role.

Precautions

Storage conditions: It should be stored in a cool, ventilated and dry warehouse, avoid direct sunlight and high temperature environment, and stay away from fire and heat sources. The storage temperature should be controlled between 5℃ - 35℃ to prevent DOS from volatilizing or deteriorating due to excessive temperature. Too low temperature may cause it to solidify and affect its use.

Safety of use: DOS is irritating to the skin and eyes. Protective gloves, goggles and other protective equipment should be worn during operation to avoid direct contact. If it accidentally contacts the skin, it should be rinsed immediately with plenty of water; if it splashes into the eyes, it should be rinsed immediately with clean water and seek medical attention.

Although DOS is less toxic, it is still necessary to pay attention to protection during production and use to avoid long-term contact or inhalation of its vapor and dust.

Environmental requirements: In some countries and regions, there are strict restrictions on the amount of plasticizers used in different products. In the fields of plastic products and toys that come into contact with food, it is necessary to follow the strict limit standards for the content of plasticizers in relevant regulations to ensure human health and environmental safety.

Therefore, when using DOS, its usage should be reasonably controlled according to the specific application field and regulatory requirements, and products that meet environmental protection requirements should be selected.

Combination with other additives: In actual applications, DOS is usually used in combination with other additives such as lubricants, antioxidants, and ultraviolet absorbers.

Attention should be paid to the interaction between these additives to avoid adverse reactions that affect the effect of the plasticizer and the overall performance of the material. Before use, it is recommended to conduct sufficient testing and evaluation to determine the best additive formula and use process.

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