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Dimethyl phthalate

Also known as Dimethylphthalate, Avolin, Mipax

CAS 131-11-3Formula C10H10O4Molar mass 194.19 g/molEC 205-011-6
GHS signal word: Danger. Pictograms: Flammable, Corrosive, Harmful or irritant, Hazardous to the environment 98 suppliers listed
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Dimethyl phthalate chemical structure, C10H10O4, CAS 131-11-3
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Pale yellow
Melting point
5.5 °C
Boiling point
283.7 °C
Density
Relative density (water = 1): 1.19
Flash point
146 °C
HS code
291734
Category
Plasticizers
UN number
UN 3082
Illustrative photo, an IBC tote of pale yellow liquid in a chemical plant
Typical packagingIllustrative packaging image, not the actual product

What is Dimethyl phthalate?

Plain description, key identifiers and synonyms

Dimethyl phthalate is a methyl ester, a phthalate ester and a diester.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
dimethyl benzene-1,2-dicarboxylate
CAS number
131-11-3 CAS number cross-checked
EC number
205-011-6
Molecular formula
C10H10O4
UNII
08X7F5UDJM
MDL number
MFCD00008425
INCI name
DIMETHYL PHTHALATE
InChIKey
NIQCNGHVCWTJSM-UHFFFAOYSA-N
InChI
InChI=1S/C10H10O4/c1-13-9(11)7-5-3-4-6-8(7)10(12)14-2/h3-6H,1-2H3
SMILES (canonical and isomeric)
COC(=O)C1=CC=CC=C1C(=O)OC

Synonyms

  • Dimethylphthalate
  • Avolin
  • Mipax
  • Palatinol M
  • Solvanom
  • Solvarone
  • Fermine
  • Dimethyl o-phthalate
  • Repeftal
  • Phthalic acid dimethyl ester
  • Unimoll DM
  • dimethyl benzene-1,2-dicarboxylate
  • Dimethyl 1,2-benzenedicarboxylate
  • Phthalsaeuredimethylester
  • 1,2-Benzenedicarboxylic acid, dimethyl ester
  • Dimethyl benzene-o-dicarboxylate
  • ENT 262
  • dimethylphtalate
  • DMF (insect repellant)
  • Dimethyl benzeneorthodicarboxylate
  • RCRA waste number U102
  • Phtalate de dimethyle
  • Dimethylester kyseliny ftalove
  • 1,2-dimethyl benzene-1,2-dicarboxylate
  • Phthalic acid methyl ester
Show all 36 synonyms
  • Dimethyl 1,2-benzendicarboxylate
  • o-Dimethyl phthalate
  • DMF (insect repellent)
  • Methyl phthalate
  • Phthalic acid, dimethyl ester
  • 1,2-Benzenedicarboxylic acid, 1,2-dimethyl ester
  • DMF, insect repellent
  • NTM
  • Phthalic acid, bis-methyl ester
  • Dimethyl phthalate, >=99%
  • methyl 2-(methoxycarbonyl)benzoate

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
Pale yellowexp.
Odour
Slight aromatic odorexp.
Melting point
5.5 °Cexp.
Boiling point
283.7 °Cexp.
Density
Relative density (water = 1): 1.19exp.
Flash point
146 °Cexp.
Autoignition temperature
490 °Cexp.
Solubility
In water, 4,000 mg/L at 25 °Cexp.
Vapour pressure
VP: <0.01 mm Hg at 20 °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
194.19 g/molcalc.
Exact mass
194.0579 Dacalc.
LogP (octanol/water)
1.26calc.
Topological polar surface area
52.6 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
4calc.
Rotatable bonds
2calc.
Heavy atoms
14calc.
Rings
1calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0.2calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (0 violations)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
GHS02: Flammable
Flammable
GHS05: Corrosive
Corrosive
GHS07: Harmful or irritant
Harmful or irritant
GHS09: Hazardous to the environment
Hazardous to the environment
110NFPA 704 rating

Hazard statements

  • H242Heating may cause a fire.
  • H302Harmful if swallowed.
  • H314Causes severe skin burns and eye damage.
  • H317May cause an allergic skin reaction.
  • H411Toxic to aquatic life with long lasting effects.
Precautionary statements (31)
  • P210Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
  • P234Keep only in original packaging.
  • P235Keep cool.
  • P240Ground and bond container and receiving equipment.
  • P260Do not breathe dust, fume, gas, mist, vapours or spray.
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P270Do not eat, drink or smoke when using this product.
  • P272Contaminated work clothing should not be allowed out of the workplace.
  • P273Avoid release to the environment.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P317If swallowed: Get medical help.
  • P301 + P330 + P331If swallowed: Rinse mouth. Do not induce vomiting.
  • P302 + P352If on skin: Wash with plenty of water.
  • P302 + P361 + P354If on skin: Take off immediately all contaminated clothing. Immediately rinse with water for several minutes.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P305 + P354 + P338If in eyes: Immediately rinse with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P316Get emergency medical help immediately.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • P333 + P317If skin irritation or rash occurs: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P363Wash contaminated clothing before reuse.
  • P370 + P378In case of fire: Use appropriate media to extinguish.
  • P391Collect spillage.
  • P403Store in a well-ventilated place.
  • P405Store locked up.
  • P410Protect from sunlight.
  • P411Store at temperatures not exceeding the specified limit.
  • P420Store separately.
  • 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

Dimethyl phthalate suppliers

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All 98 suppliers
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Where suppliers are based

98 suppliers in 17 countries

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Dimethyl 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

The active ingredient is no longer contained in any registered pesticide products ... "cancelled.".

Solvent and plasticizer for cellulose acetate and cellulose acetate-butyrate compositions. Insect repellent for personal protection against biting insects.

For making varnishes & clear white or slightly colored clear films which may be exposed to the sun.

Dimethyl phthalate is used in solid rocket propellants, lacquers, plastics, safety glasses, rubber coating agents, molding powders, insect repellants, and pesticides.

Industrial uses: Intermediate, Plasticizer.

Consumer uses: Plasticizer.

Use classes: Cosmetics.

Cosmetic ingredient, INCI name DIMETHYL PHTHALATE(film forming, fragrance, plasticiser, solvent)

Pharmacological actions

  • Fixatives
  • Insect Repellents

Roles

  • antiinfective agent
  • antiparasitic agent
  • pharmaceutical

Functional uses

  • Deodorizer
  • Film former
  • Fragrance
  • Plasticizer
  • Processing aids not otherwise specified
  • Solvent

Cosmetic functions

  • Film forming
  • Fragrance
  • Plasticiser
  • Solvent

How it is made

Prepared industrially from phthalic anhydride and methanol.

Regulatory status

Inventories, regulations and trade controls that list this substance

Europe

  • EU harmonised classification (CLP Annex VI)
    Index no: 617-022-00-7

Health and food

  • EU cosmetic ingredient inventory

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 Dimethyl 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 Dimethyl phthalate is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

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

What is Dimethyl phthalate?

Dimethyl phthalate is a methyl ester, a phthalate ester and a diester.

What is the CAS number of Dimethyl phthalate?

The CAS registry number of Dimethyl phthalate is 131-11-3.

What is the molecular formula and weight of Dimethyl phthalate?

The molecular formula of Dimethyl phthalate is C10H10O4 and its molar mass is 194.19 g/mol.

What is Dimethyl phthalate used for?

The active ingredient is no longer contained in any registered pesticide products ... "cancelled.". Solvent and plasticizer for cellulose acetate and cellulose acetate-butyrate compositions. Insect repellent for personal protection against biting insects.

Is Dimethyl phthalate hazardous?

Dimethyl phthalate carries the GHS signal word "Danger". Main hazards: heating may cause a fire, harmful if swallowed, causes severe skin burns and eye damage. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Dimethyl phthalate?

Dimethyl 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 Dimethyl phthalate?

CompoundList lists 98 suppliers of Dimethyl phthalate in China, United States, India, Turkey and 13 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Dimethyl phthalate in India?

21 suppliers in India list Dimethyl 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 Dimethyl phthalate?

Suppliers quote Dimethyl 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 Dimethyl 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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