Esters Available — Bulk Only

Dioctyl Terephthalate (DOTP, DEHT)

CAS 6422-86-2 · Formula C24H38O4 · MW 390.6 g/mol

A terephthalate-ester plasticizer used across vinyl and rubber compounds for flexibility. It plasticizes polyvinyl chloride and is compatible with cellulose acetate-butyrate, cellulose nitrate, poly(methyl methacrylate), polystyrene, and poly(vinyl butyral) resins.

Safety Data Sheet
HS Code
2917.39
At a Glance
Material Family
Esters
Record Type
Pure compound
Primary Role
Plasticizing
Functional Roles
Plasticizing
INCI Name
DIETHYLHEXYL TEREPHTHALATE
CosIng Functions
PLASTICISER
Industries Served
Beauty & Personal Care Plastics & Polymers
Applications & Use Cases
  • ▸ PVC plasticizer: Plasticizer for poly(vinyl chloride).
  • ▸ Rubber softener: Softener for nitrile-butadiene, chloroprene, and butyl rubber.
  • ▸ Cellulosic resins: Plasticizer compatible with cellulose acetate-butyrate and cellulose nitrate.
  • ▸ Engineering resins: Plasticizer compatible with PMMA, polystyrene, and poly(vinyl butyral).
Physical Properties
Physical Description
NKRA; Pellets or Large Crystals; Liquid
Boiling Point
383 °C
Melting Point
-48 °C
Flash Point
238 °C or 238 °C (open cup)
Solubility
In water, 4.0 mg/L at 20 °C
Density
0.9825 at 20/20 °C
Vapor Density
13.5 (Air = 1)
Vapor Pressure
0.0000214
Viscosity
63 cp at 25 °C
Refractive Index
Index of refraction = 1.4867 at 20 °C/D
Safety & Handling
Full SDS available on request

A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.

HS / Tariff Classification
Harmonized System (HS) Code — 6-digit international heading
2917 . 39
Chapter 29
Organic chemicals
Heading 29.17
Internationally harmonized (WCO HS)
Subheading 2917.39
6-digit international code — national tariff line adds further digits
Chemical Identity
CAS Number
6422-86-2
Molecular Formula
C24H38O4
Molecular Weight
390.6 g/mol
IUPAC Name
bis(2-ethylhexyl) benzene-1,4-dicarboxylate
INCI Name
DIETHYLHEXYL TEREPHTHALATE
PubChem CID
22932
InChI Key
RWPICVVBGZBXNA-UHFFFAOYSA-N
Synonyms & Trade Names
Di-(2-ethylhexyl) terephthalate 1,4-DEHT BIS(2-ETHYLHEXYL) TEREPHTHALATE Kodaflex DOTP Di(2-ethylhexyl) terephthalate bis(2-ethylhexyl) benzene-1,4-dicarboxylate 1,4-Benzenedicarboxylic acid, bis(2-ethylhexyl) ester Terephthalic acid, bis(2-ethylhexyl) ester dioctyl terepthalate diethylhexyl terephthalate Terephthalic acid bis(2-ethylhexyl) ester 1,4-Benzenedicarboxylic acid, bis(2-ethylhexyl)ester 1,4-Benzenedicarboxylic acid, 1,4-bis(2-ethylhexyl) ester Eastman DOTP Plasticizer Eastman 168 DEHTP
Full Description

Dioctyl terephthalate (DOTP, CAS 6422-86-2) is a terephthalate ester plasticizer, bis(2-ethylhexyl) terephthalate. It plasticizes polyvinyl chloride and is compatible with cellulose acetate-butyrate, cellulose nitrate, poly(methyl methacrylate), polystyrene, and poly(vinyl butyral) resins. It also softens nitrile-butadiene, chloroprene, and butyl rubbers.

Frequently Asked Questions

What is dioctyl terephthalate (DOTP) used for?

DOTP is a terephthalate-ester plasticizer (bis(2-ethylhexyl) terephthalate) for poly(vinyl chloride). It is also compatible with cellulose acetate-butyrate, cellulose nitrate, PMMA, polystyrene, and poly(vinyl butyral) resins, and softens nitrile-butadiene, chloroprene, and butyl rubbers.

Is DOTP the same as dioctyl phthalate (DOP)?

No. DOTP (CAS 6422-86-2) is the terephthalate isomer; DOP/DEHP (CAS 117-81-7) is the ortho-phthalate. Both share the formula C24H38O4 but differ in ester linkage and are not interchangeable for specification. Verify CAS on the CoA.

What is the CAS number and molecular weight of dioctyl terephthalate?

CAS 6422-86-2, molecular formula C24H38O4, molecular weight approximately 390.6 g/mol. It is also known as bis(2-ethylhexyl) terephthalate or di(2-ethylhexyl) terephthalate. Identity is confirmed on the CoA.

What is the HS code for dioctyl terephthalate?

DOTP classifies under HS 2917.39 (other aromatic polycarboxylic acid esters). The CAS is 6422-86-2. Customs and CoA documentation accompany each bulk shipment.

How is bulk DOTP packaged and quoted?

DOTP is supplied to compounders and converters in drums, totes, or bulk. Pricing depends on volume, packaging, and destination and reflects 2-ethylhexanol and PTA/DMT feedstock markets. Submit a bulk RFQ for a current quote, CoA, and SDS.

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Disclaimer. Information on this page — including properties, identifiers, hazard, transport (DOT/UN) and tariff (HS) classifications, and applications — is provided for general reference and is compiled from authoritative public sources (e.g. PubChem/ECHA, 49 CFR 172.101, the Harmonized Tariff Schedule). Values are typical and are not a guaranteed specification; the Certificate of Analysis (CoA) for the lot purchased governs. Products are sold for industrial and professional use only. Nothing here is a medical, health, or efficacy claim or advice. Always consult the current Safety Data Sheet (SDS) before handling, storage, transport or disposal, and confirm regulatory status, classification and suitability for your application and jurisdiction. Hazard, transport and tariff classifications must be verified for your specific shipment. RawSource makes no warranty, express or implied, and assumes no liability for use of this information. Trademarks. Third-party trademarks and brand names are the property of their respective owners; any reference is nominative — used only to identify a comparable product — and does not imply affiliation with, sponsorship by, or endorsement by the trademark owner.

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