Diisooctyl sebacate CAS 27214-90-0
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Diisooctyl sebacate is a high-performance synthetic ester plasticizer and functional additive, which is esterified by sebacic acid and isooctyl alcohol. Its unique chemical structure gives it excellent low-temperature flexibility, thermal stability and lubricity. It is an excellent low-temperature plasticizer and is widely used in polymer materials, lubricants and catalytic systems.
27214-90-0
C26H50O4
426.67
2483332
| CAS | 27214-90-0 |
| Molecular formula | C26H50O4 |
| Molecular weight | 426.67 |
| EIENCS | 2483332 |
| Form | Liquid |
| Melting point | / |
| boling point | 225 °C / 2mmHg |
| Density | 0,91 g/cm3 |
| Solubility | / |
| PKA | / |
| Color | Colourless |
| Storage temp | 2-8°C |
Diisodecyl Sebacate (DIDS, chemical formula: C₁₀H₁₈O₄·2C₁₀H₂₁) is a high-performance synthetic ester plasticizer and functional additive, which is esterified by sebacic acid and isooctyl alcohol (usually 2-ethylhexanol). Its unique chemical structure gives it excellent low-temperature flexibility, thermal stability and lubricity, and it is widely used in polymer materials, lubricants and catalytic systems.
(1) Plasticizer for polymer materials (core function)
Mechanism of action:
Inserted between polymer chains, weakening intermolecular forces, improving material flexibility and processing fluidity.
Advantages:
Low-temperature performance: Keep PVC/rubber from cracking at -40°C (automotive sealing strips, refrigeration equipment pipelines).
Migration resistance: Branched structure reduces exudation and extends product life.
Application scenarios:
Automotive interior (instrument panel, seat leather), medical catheters, food packaging film.
(2) Lubricant base oil/additive (auxiliary agent)
Function:
As a synthetic ester lubricant or viscosity index improver.
Mechanism of action:
Polar ester groups adsorb on metal surfaces to form an oil film, reducing friction and wear.
Maintains stable viscosity over a wide temperature range (-50°C~180°C).
Application areas:
Aerospace engine oil, compressor oil, biodegradable grease.
(3) Catalyst carrier/reaction medium
Solvents for homogeneous catalytic systems:
Dissolves metal catalysts such as palladium and platinum for hydrogenation and coupling reactions (such as olefin hydrogenation).
The high boiling point allows high temperature reactions (>150°C) to improve catalytic efficiency.
Phase transfer catalysis (PTC) additives:
Promotes mass transfer in solid-liquid multiphase reactions (such as alkylation reactions).
(4) Polymer processing additives
Rheology modifiers:
Improve the leveling of PVC paste resins and prevent cracking of spray coatings.
Antistatic agent carriers:
Dissolve ionic antistatic agents (such as quaternary ammonium salts) and disperse them evenly in plastics.
Low toxicity: Passed FDA 21 CFR 175.300 (food contact materials)
Biodegradability: OECD 301B test degradation rate > 80%
Non-phthalate structure: Complies with REACH/ROHS regulations, no reproductive toxicity risk
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