Industry grade 99% Dioctyl Phthalate CAS 117-84-0 DOP

1. Product Overview

Dioctyl phthalate — in industrial practice the general-purpose plasticizer bis(2-ethylhexyl) phthalate (DEHP, CAS 117-81-7) — is the world's most widely used phthalate plasticizer. It is a high-boiling, low-volatility, almost water-insoluble ester of phthalic anhydride and 2-ethylhexanol, added to polyvinyl chloride (PVC) and other polymers to impart flexibility, softness and processability. Its applications span flexible PVC wire and cable, film, flooring, footwear, hoses and synthetic leather, coatings and printing inks, rubbers, adhesives and cellulose esters. DEHP delivers the best cost/performance balance among general-purpose plasticizers

One product,three core value propositions:

General-Purpose PVC Plasticizer (Core Application):

● flexibility, softness, low-temperature performance and processability at the best cost/performance ratio;

Broad Polymer Compatibility:

● works in PVC, PVC copolymers, rubbers (NBR/CR), coatings, inks and cellulose esters;

Excellent Electrical & Physical Properties:

● high dielectric strength, low volatility and good permanence for wire-and-cable and film

2. Product Information (Quick Facts)

3. Chemistry & Structure

DEHP is the diester of phthalic acid (1,2-benzenedicarboxylic acid) and 2-ethylhexanol, C₂₄H₃₈O₄. It is manufactured by esterifying phthalic anhydride with 2-ethylhexanol under acid or titanium catalysis, typically reaching ester content above 99%. A colorless, faintly odorous oily liquid, it boils around 385 °C and is practically insoluble in water (0.27 mg/L) but miscible with most organic solvents — properties that make it a compatible, low-volatility plasticizer for PVC. Its branched 2-ethylhexyl chains give it excellent low-temperature flexibility. Naming note: industrial “DOP” almost always means DEHP (CAS 117-81-7); the straight-chain di-n-octyl phthalate (DNOP, CAS 117-84-0) is a different product.

4. Key Features & Benefits

● Best cost/performance: the benchmark general-purpose plasticizer for flexible PVC.

● High compatibility: excellent solvation and miscibility with PVC and PVC copolymers.

● Low volatility, high boiling point (≈ 385 °C): good permanence and heat stability in service.

● Good low-temperature flexibility: branched 2-ethylhexyl chains keep soft PVC pliable in cold service.

● Excellent electrical properties: high volume resistivity — preferred for wire-and-cable compounds.

● Versatile: effective in PVC, rubbers, coatings, inks, adhesives and cellulose esters.

● Stable quality: controlled ester content (≥ 99%), acid value, moisture, color and impurities (COA).

● Flexible supply: ISO tank, IBC and drum packing; samples and custom packing available.

5. Main Applications

5.1 Flexible PVC Plasticizer (Core Application)

● Wire and cable: insulation and sheathing compounds with high dielectric strength;

● Film and sheet: packaging film, agricultural film, lamination and flexible sheet;

● Flooring: vinyl floor tiles, planks and sheet flooring;

● Footwear and soft goods: shoe soles, sandals and flexible articles;

● Hoses, tubing and profiles: flexible pipes, tubing, seals and gaskets;

● Synthetic leather: artificial leather for upholstery, garments and automotive interiors.

5.2 Coatings & Printing Inks

● Industrial coatings: plasticizing alkyd, nitrocellulose and lacquer systems;

● Printing inks: flexibility and adhesion improvement in flexo and gravure inks;

● Paint formulation: film flexibility and anti-cracking performance in specialty paints.

5.3 Rubber & Elastomers

● Nitrile rubber (NBR): plasticizing for oil-resistant compounds;

● Chloroprene rubber (CR) and blends: flexibility and processability;

● PVC-NBR blends: cable and flooring compounds combining PVC and rubber.

5.4 Adhesives & Sealants

● Hot-melt and solvent adhesives: tack and flexibility control;

● PVC plastisol sealants and coatings: viscosity and fusion control;

● Construction sealants: flexibility and durability in service.

5.5 Cellulose Esters & Specialty Processing

● Cellulose ester plasticizing: nitrocellulose and cellulose acetate formulations;

● Lubricating greases and processing aids: low-volatility fluid in specialty formulations;

● Chemical intermediate: feedstock for downstream phthalate derivatives (restricted in the EU).

6. Packaging, Storage

Packaging (customizable):

● ISO tank or flexitank for bulk; 1,000 L IBC; 200 L drums;

Storage:

● Store in a cool, dry, well-ventilated area away from direct sunlight and heat sources;

● Keep containers tightly closed to avoid contamination with water or moisture;

● Keep away from strong oxidizing agents and food/feed materials.

7. Why Choose Jinan Future Chemical Co., Ltd.?

● Factory-direct supply: own production and sourcing capability, transparent pricing, no middleman markup;

● Stable quality: strict internal control, every batch tested (ester content ≥ 99%, acid value, moisture, color), COA with every shipment;sample orders welcome;

● Compliance support: current regulatory information (REACH/RoHS/Prop 65) and destination-market guidance for buyers;

● Export experience: experienced in bulk liquid shipping (ISO tank/IBC) worldwide;

8. FAQ

Q1: What is dioctyl phthalate (DOP/DEHP) used for?

DOP/DEHP is the world's benchmark general-purpose plasticizer, used mainly to soften rigid PVC into flexible products: wire and cable, film and sheet, flooring, footwear, hoses, profiles and synthetic leather. It is also used in coatings and printing inks, rubber (NBR/CR) compounds, adhesives and sealants, and cellulose esters. Its role is to penetrate the polymer, separate the chains and give flexibility, softness, low-temperature performance and processability at low cost.

Q2: Why is DEHP the standard general-purpose PVC plasticizer?

DEHP combines (1) excellent compatibility with PVC — its phthalate diester structure solvates PVC chains efficiently; (2) a high boiling point (≈ 385 °C) and low volatility for good permanence; (3) excellent low-temperature flexibility from its branched 2-ethylhexyl chains; (4) outstanding electrical properties for wire-and-cable; and (5) the lowest cost among full-performance phthalates. Together these give the best cost/performance balance, which is why it became the industry benchmark. The trade-off is its regulatory profile (see Q4).