Bis(2-ethylhexyl) Sebacate (CAS 122-62-3): Technical Overview & Industrial Applications

Definition and Chemical Identity

Bis(2-ethylhexyl) sebacate, commonly known as Dioctyl Sebacate (DOS), is an organic ester derived from sebacic acid and 2-ethylhexanol. Identified by CAS Number 122-62-3, it is a high-performance plasticizer and lubricant base stock valued for its exceptional low-temperature flexibility and low volatility.

Core Chemical Profile

Primary Applications of Dioctyl Sebacate (DOS)

1. High-Performance Plasticizer

Bis(2-ethylhexyl) sebacate is widely used in the production of PVC, nitrocellulose, and ethyl cellulose. It is particularly essential for products that require durability in extreme environments, such as:

• Cold-resistant cable sheathing and wires.

• Artificial leather and film for outdoor use.

• Specialized rubber compounds requiring low-temperature elasticity.

2. Synthetic Lubricants and Greases

Due to its high viscosity index and thermal stability, CAS 122-62-3 serves as a primary base oil for synthetic lubricants. It is commonly found in:

• Jet engine lubricants and aerospace greases.

• Precision instrument oils.

• Hydraulic fluids for high-altitude or arctic operations.

3. Food Packaging & Medical Grades

In its high-purity form, DOS is utilized in food-contact materials and medical-grade plastics due to its low toxicity profile and resistance to extraction by aqueous media.

Technical Advantages

• Extreme Cold Resistance: Maintains flexibility at temperatures as low as $-60$°C.

• Low Volatility: Minimizes loss of mass and maintains structural integrity during high-temperature processing.

• Weatherability: Exceptional resistance to UV degradation and environmental aging.

• Excellent Electrical Insulation: Ideal for high-spec electronic housing and wiring.

Frequently Asked Questions (FAQs)

What is the difference between DOS and DOP (Dioctyl Phthalate)?

While both are plasticizers, Bis(2-ethylhexyl) sebacate (DOS) provides significantly better low-temperature performance and lower volatility than DOP. DOS is often preferred in high-end synthetic lubricants and specialized cold-weather materials where phthalate-free or higher-performance alternatives are required.

Is Bis(2-ethylhexyl) sebacate biodegradable?

Yes, sebacate esters like DOS are generally considered more biodegradable than many petroleum-based phthalates or branched-chain polymer additives, making them a more environmentally conscious choice for certain industrial applications.

In which solvents is CAS 122-62-3 soluble?

It is virtually insoluble in water but exhibits excellent solubility in most organic solvents, including ethanol, acetone, ether, and hydrocarbons.

What are the storage requirements for Dioctyl Sebacate?

It should be stored in a cool, well-ventilated warehouse. Keep containers tightly closed and separated from strong oxidants and acids to maintain chemical purity and prevent degradation.

Global Supply and Contact Information

We offer high-purity Bis(2-ethylhexyl) sebacate (CAS 122-62-3) for global distribution, backed by comprehensive COA, MSDS, and technical support.

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• Business Scope: Industrial Chemicals, Synthetic Lubricant Bases, and High-Performance Plasticizers.