Is Diisodecyl Phthalate CAS 26761-40-0 one pure compound?

DIDP is the common abbreviation for Diisodecyl Phthalate. The commercial material is a high-molecular-weight phthalate ester supplied as a branched C10 isomer mixture, so CAS 26761-40-0 identifies the product family rather than one fixed isomer distribution.

Where is DIDP used in PVC?

DIDP is used mainly as a primary plasticizer for flexible PVC, especially wire and cable insulation and jackets, automotive interiors, roofing membranes, flooring and technical films. It is selected where low volatility, good heat aging and low fogging are important.

Which DIDP specifications matter for wire and cable compounds?

Compare ester content, acid value, water content, APHA color, viscosity, specific gravity and volatility after heat exposure. Typical high-performance material has ester content about 98.5% or higher, low acid and water values, and controlled color; the final limits should match the target PVC formulation.

How does DIDP compare with DINP or DOP?

DIDP generally has lower volatility and improved fogging resistance than lighter phthalates such as DINP or DOP, making it suitable for higher-temperature cable and automotive applications. The final performance still depends on the PVC resin, stabilizer package, filler and plasticizer loading.

What handling and regulatory points apply to DIDP?

Keep the product in tightly closed, clean, dry containers away from moisture, excessive heat and strong oxidizers. Confirm the current safety information and local phthalate regulations because toy, childcare, medical and other regulated uses can have market-specific restrictions.

Diisodecyl Phthalate (DIDP) CAS 26761-40-0

Diisodecyl Phthalate (DIDP) CAS 26761-40-0 is a high-molecular-weight phthalate plasticizer used in flexible PVC applications where volatility and extraction resistance are important. Confirm specification, viscosity, color, application, regulatory requirements, quantity, packaging, and documents before quotation.

CAS: 26761-40-0
Synonyms: Diisodecyl phthalate, DIDP, Bis(isodecyl) phthalate, 1,2-Benzenedicarboxylic acid diisodecyl ester
Einecs: 247-977-1
Molecular Formula: C₂₈H₄₆O₄
Grade: Confirm the current product-specific specification.
Package: Confirm packaging requirements with quantity, destination, and handling needs.

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Product Description

Diisodecyl Phthalate (DIDP) is a high-molecular-weight phthalate plasticizer identified by CAS 26761-40-0.

Synonyms: Diisodecyl phthalate; DIDP; Bis(isodecyl) phthalate; 1,2-Benzenedicarboxylic acid diisodecyl ester.

CAS: 26761-40-0.

EINECS / EC: 247-977-1.

Molecular formula: C₂₈H₄₆O₄.

Confirm ester content, acid value, water content, APHA color, viscosity, specific gravity, application, quantity, packaging, and documents before purchase.

It is mainly evaluated as a primary plasticizer for flexible PVC where low volatility, heat aging resistance and low fogging are important.

Confirm the current product-specific specification.

Confirm packaging requirements with quantity, destination, and handling needs.

Document requirements should be confirmed from the current specification, SDS, COA, or other product-specific files.

Regulated-use suitability must be confirmed separately with current product-specific documentation.

The page is an RFQ entry point and does not state stock, price, MOQ, or fixed lead time.

For an RFQ, state the intended use, required specification, quantity, packaging, destination, and document needs.

FAQ - Technical & Supply Chain

Q:
Is Diisodecyl Phthalate CAS 26761-40-0 one pure compound?

A: DIDP is the common abbreviation for Diisodecyl Phthalate. The commercial material is a high-molecular-weight phthalate ester supplied as a branched C10 isomer mixture, so CAS 26761-40-0 identifies the product family rather than one fixed isomer distribution.
Q:
Where is DIDP used in PVC?

A: DIDP is used mainly as a primary plasticizer for flexible PVC, especially wire and cable insulation and jackets, automotive interiors, roofing membranes, flooring and technical films. It is selected where low volatility, good heat aging and low fogging are important.
Q:
Which DIDP specifications matter for wire and cable compounds?

A: Compare ester content, acid value, water content, APHA color, viscosity, specific gravity and volatility after heat exposure. Typical high-performance material has ester content about 98.5% or higher, low acid and water values, and controlled color; the final limits should match the target PVC formulation.
Q:
How does DIDP compare with DINP or DOP?

A: DIDP generally has lower volatility and improved fogging resistance than lighter phthalates such as DINP or DOP, making it suitable for higher-temperature cable and automotive applications. The final performance still depends on the PVC resin, stabilizer package, filler and plasticizer loading.
Q:
What handling and regulatory points apply to DIDP?

A: Keep the product in tightly closed, clean, dry containers away from moisture, excessive heat and strong oxidizers. Confirm the current safety information and local phthalate regulations because toy, childcare, medical and other regulated uses can have market-specific restrictions.

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