Dioctyl sebacate CAS 122-62-3

Product name: Bis(2-ethylhexyl) sebacate

English alias: DIOS; Bis(6-methylheptyl) decanedioate; Sebacic acid diisooctyl ester

CAS: 122-62-3

Molecular formula: C26H50O4

Appearance: Colorless to pale yellow transparent oily liquid

Package: 200 kg/drum, 1000 kg/IBC tank

What is Bis(2-ethylhexyl) sebacate?

Diisooctyl Sebacate (DIOS) is a saturated diester plasticizer derived from sebacic acid and isooctyl alcohol (typically 6-methylheptan-1-ol). It belongs to the class of sebacate esters, which are renowned for their exceptional low-temperature flexibility and high thermal stability. DIOS exhibits very low volatility, excellent resistance to extraction by water and soapy solutions, and good compatibility with a wide range of polymers including PVC, polyurethane, and various elastomers. It is a high-performance plasticizer often used in applications demanding durability under extreme temperature conditions.

COA (Certificate of Analysis):

Item No.	Test purpose	Standard direction	Test result
		Premium grade
1	Appearance	Transparency oil shape liquid, No suspended substance
2	Chroma, (Platinum-cobalt ) ≤	30	25
3	Total ester，% ≥	99.0	99.3
4	Acidity,(mgKOH/g) ≤	0.10	0.05
5	Moisture，%≤	0.10	0.04
6	Density，g/cm3	0.913～0.917	0.916
7	Flash point，℃≥	205	208
8	Heating loss (125 ℃ / 2h,%) ≤	0.2	0.2

Application:

1. Bis(2-ethylhexyl) sebacate used as a primary plasticizer in PVC compounds for applications requiring outstanding low-temperature flexibility, such as automotive interior parts, outdoor cables, and cold-weather films.

2. Employed in synthetic rubbers and elastomers to improve low-temperature performance and flexibility.

3. Applied in polyurethane coatings and adhesives as a plasticizer to enhance elasticity and low-temperature properties.

4. Used in specialty gaskets, seals, and hoses that are exposed to wide temperature ranges.

5. Employed in food-contact applications and medical devices where its low toxicity and high purity are advantageous (specific grades required).

6. Used as a base fluid in synthetic lubricants and greases for wide-temperature operation.

7. Applied in nitrocellulose and other cellulose derivative lacquers.

Safety profile:

Diisooctyl Sebacate is generally considered to have very low toxicity and is not classified as hazardous. It is often used in applications requiring FDA compliance (e.g., 21 CFR 175.105, 21 CFR 181.22, 21 CFR 181.27). It may cause minimal eye or skin irritation. Good industrial hygiene practices are recommended. Use gloves and safety glasses when handling. Ensure adequate ventilation.

Classification:

Classified as a combustible liquid.

Reactivity:

Can react with strong oxidizing acids, caustic solutions, and alkali metals.

Storage requirements:

Store in a cool, dry, well-ventilated area away from direct sunlight, heat, and ignition sources. Keep containers tightly closed to prevent moisture absorption and contamination. Recommended storage temperature: 10-40 °C. Store away from strong oxidizing agents.

Transport & Packaging:

DIOS is typically supplied in 200 kg steel or HDPE drums and 1000 kg IBC containers. Classified as non-hazardous for transport.