Di-n-octyl phthalate
Di-n-octyl phthalate (CAS: 117-84-0), with the molecular formula C24H38O4 and a molar mass of 390.56 g/mol, is a high-molecular-weight phthalate ester. It is recognised for its utility as a plasticiser and a chemical intermediate. This compound is widely employed in various industrial applications, primarily for its ability to impart flexibility and durability to polymer materials, making it a valuable component in the formulation of plastics and coatings.
- IUPAC
- DNOP,Phthalic acid di-n-octyl ester
- Synonyms
- DNOPPhthalic acid di-n-octyl ester

Plasticiser in Polymers
Di-n-octyl phthalate serves as an effective plasticiser, enhancing the flexibility, workability, and durability of polymers such as PVC. Its incorporation allows for easier processing and improved physical properties in end products like films, cables, and flooring.
Chemical Intermediate
As a versatile organic compound, it functions as an intermediate in the synthesis of various chemicals. Its ester functionality allows for participation in numerous organic reactions, contributing to the production of more complex molecules.
Component in Coatings and Adhesives
The compound finds application in the formulation of industrial coatings and adhesives. It helps to improve film formation, adhesion, and resistance properties, contributing to the performance of protective and bonding agents.
| Molecular weight | 390.56 |
|---|---|
| Empirical formula | C24H38O4 |
| Assay | ≥98.0% (GC) |
| Density | 0.980 g/mL at 20 °C(lit.) |
| Refractive index | n20/D 1.485 |
| Protective equipment | Eyeshields, Gloves |
|---|---|
| Flash point | 109 °C / 228.2 °F |
| Transport (UN / ADR) | UN 3082 9 / PGIII |
| Water hazard class (WGK, DE) | 2 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Acid Value | ≤3 |
|---|
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Di-n-octyl phthalate used for?
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Di-n-octyl phthalate (CAS: 117-84-0) is primarily used as a plasticiser in polymers, an intermediate in chemical synthesis, and a component in coatings and adhesives.
What are the CAS number and formula for Di-n-octyl phthalate?
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The CAS number for Di-n-octyl phthalate is 117-84-0, and its molecular formula is C24H38O4.
What grade and purity does Tech Serve Solutions supply for Di-n-octyl phthalate?
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Tech Serve Solutions supplies Di-n-octyl phthalate with an assay of ≥98.0% (GC). This is a technical grade product and is not represented as USP, BP, or EP grade.
What are the safety considerations when handling Di-n-octyl phthalate?
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Handling Di-n-octyl phthalate requires appropriate personal protective equipment, including eyeshields and gloves. It is classified under UN 3082, Class 9, Packing Group III, and has a WGK rating of 2 in Germany. Refer to the Safety Data Sheet for detailed hazard information.
How is Di-n-octyl phthalate packed, shipped, and exported?
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Di-n-octyl phthalate is packed and shipped according to regulatory standards for hazardous materials (UN 3082, Class 9, PG III). Tech Serve Solutions has extensive experience in exporting fine chemicals globally.
How can I request a quote or sample of Di-n-octyl phthalate?
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To request a quote or a sample of Di-n-octyl phthalate, please contact our sales department via the website or by phone, providing your contact details and the quantity required.
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