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Plasticizers

Dihexyl phthalate

Also known as Di-n-hexyl phthalate, dihexyl benzene-1,2-dicarboxylate, Di-n-hexylphthalate

CAS 84-75-3Formula C20H30O4Molar mass 334.46 g/molEC 201-559-5
GHS signal word: Danger. Pictograms: Serious health hazard 18 suppliers listed
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Dihexyl phthalate chemical structure, C20H30O4, CAS 84-75-3
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Clear, oily liuid
Melting point
-58 °C
Boiling point
350 °C
Density
1.010-1.016 at 20 °C/20 °C
Flash point
193 °C
HS code
291734
Category
Plasticizers
UN number
UN 3082
Illustrative photo, an amber glass solvent bottle with clear liquid on a laboratory bench
Typical packagingIllustrative packaging image, not the actual product

What is Dihexyl phthalate?

Plain description, key identifiers and synonyms

Di-n-hexyl phthalate is a 2-hydroxyisophthalic acid.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
dihexyl benzene-1,2-dicarboxylate
CAS number
84-75-3 CAS number cross-checked
EC number
201-559-5
Molecular formula
C20H30O4
UNII
42MAH1QFG5
MDL number
MFCD00043720
InChIKey
KCXZNSGUUQJJTR-UHFFFAOYSA-N
InChI
InChI=1S/C20H30O4/c1-3-5-7-11-15-23-19(21)17-13-9-10-14-18(17)20(22)24-16-12-8-6-4-2/h9-10,13-14H,3-8,11-12,15-16H2,1-2H3
SMILES (canonical and isomeric)
CCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCC

Synonyms

  • Di-n-hexyl phthalate
  • dihexyl benzene-1,2-dicarboxylate
  • Di-n-hexylphthalate
  • 1,2-Benzenedicarboxylic acid, dihexyl ester
  • Phthalic acid, dihexyl ester
  • N-Dihexyl phthalate
  • Dihexyl 1,2-benzenedicarboxylate
  • Bis(n-hexyl) phthalate
  • Hexyl phthalate, 1,2-
  • Dihexylester kyseliny ftalove
  • 1,2-Benzenedioic acid dihexyl ester
  • 1,2-dihexyl benzene-1,2-dicarboxylate
  • DnC6P
  • phthalic acid dihexyl ester
  • Phthalic acid, bis-hexyl ester
  • hexyl 2-(hexyloxycarbonyl)benzoate
  • Phthalic Acid Di-n-hexyl Ester
  • Dihexyles
  • 1, dihexyl ester
  • Dihexyl phthalate, analytical standard
  • di-N-Hexyl phthalate(mixture of isomers)
  • 1,2-Benzenedicarboxylic acid, 1,2-dihexyl ester
  • Phthalic acid, bis-hexyl ester 10 |Ig/mL in Cyclohexane
  • Phthalic acid, bis-hexyl ester 10 microg/mL in Cyclohexane

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

Appearance
Clear, oily liuidexp.
Odour
Slightly aromaticexp.
Melting point
-58 °Cexp.
Boiling point
350 °Cexp.
Density
1.010-1.016 at 20 °C/20 °Cexp.
Flash point
193 °Cexp.
Solubility
Phthalate esters are soluble to various extents in many common organic solvents and oils, but have a relatively low solubility in water. /Phthalate esters/exp.
Vapour pressure
1.4 × 10⁻⁵ mm Hg at 25 °Cexp.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
334.46 g/molcalc.
Exact mass
334.2144 Dacalc.
LogP (octanol/water)
5.16calc.
Topological polar surface area
52.6 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
4calc.
Rotatable bonds
12calc.
Heavy atoms
24calc.
Rings
1calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0.6calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (1 violation)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, c1ccccc1

c1ccccc1

1 ring, 6 atoms, the Benzene ring system.

485,677 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS08: Serious health hazard
Serious health hazard

Hazard statements

  • H360FDMay damage fertility. May damage the unborn child.
Precautionary statements (5)
  • P203Obtain, read and follow all safety instructions before use.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P318If exposed or concerned, get medical advice.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.
UN number
UN 3082

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

Dihexyl phthalate suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 18 suppliers
18 of 18 offers

Suppliers marked Unclaimed profile have not claimed their profile yet. They are not verified by CompoundList, their offers are price on request and details may have changed, so please confirm them with the supplier. Company representatives can claim a profile with a business email on the company's own website domain. Our team verifies each claim and sends the result by email.

Where suppliers are based

18 suppliers in 7 countries

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Dihexyl phthalate price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

DnHP is used in the making of plastisols that are subsequently used in the manufacture of automobile parts (air filters, battery covers) and dip-molded products (tool handles, dishwasher baskets). Commercial phthalate substances containing DnHP may be added to the PVC utilized in the manufacture of flooring, canvas tarps, and notebook covers. Substances containing DnHP may also be used in traffic cones, toys, vinyl gloves, weather stripping, flea collars, shoes, and conveyor belts used in food packaging operations.

Plasticizer for cellulose ester and vinyl plastics.

Functional uses

  • Fragrance
  • Plasticizer

How it is made

DnC6P is manufactured by esterifying phthalic anhydride and hexanol in the presence of sulfuric acid.

Regulatory status

Inventories, regulations and trade controls that list this substance

Europe

  • EU harmonised classification (CLP Annex VI)
    Index no: 607-702-00-1

Health and food

  • EU Cosmetics Regulation Annex II, prohibited in cosmetics
    Name: Dihexyl phthalate, Ref no: 1559, Annex ref: II/1559

United States

  • TSCA inventory (USA)
    Status: Active in US commerce

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Dihexyl phthalate is traded under.

HS 2917.34Indicative HS code

Aromatic polycarboxylic acids, other esters of orthophthalic acids

World exports in 2024
$279M
−7.8% vs 2023, imports $292M
2019 to 2024
Top exporters
  1. China18.7%
  2. India * partner reported16.0%
  3. South Korea14.2%
Top importers
  1. United States10.6%
  2. Germany8.7%
  3. China8.0%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for Dihexyl phthalate is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Dihexyl phthalate, based on the data on this page

What is Dihexyl phthalate?

Di-n-hexyl phthalate is a 2-hydroxyisophthalic acid.

What is the CAS number of Dihexyl phthalate?

The CAS registry number of Dihexyl phthalate is 84-75-3.

What is the molecular formula and weight of Dihexyl phthalate?

The molecular formula of Dihexyl phthalate is C20H30O4 and its molar mass is 334.46 g/mol.

What is Dihexyl phthalate used for?

DnHP is used in the making of plastisols that are subsequently used in the manufacture of automobile parts (air filters, battery covers) and dip-molded products (tool handles, dishwasher baskets).

Is Dihexyl phthalate hazardous?

Dihexyl phthalate carries the GHS signal word "Danger". Main hazards: may damage fertility. may damage the unborn child. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Dihexyl phthalate?

Dihexyl phthalate is usually classified under HS code 291734 (Aromatic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Dihexyl phthalate?

CompoundList lists 18 suppliers of Dihexyl phthalate in India, United States, China, United Arab Emirates and 3 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Dihexyl phthalate in India?

7 suppliers in India list Dihexyl phthalate on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of Dihexyl phthalate?

Suppliers quote Dihexyl phthalate on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Dihexyl phthalate

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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