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Ketone and ester solvents

Ethanedioic acid, dimethyl ester

Also known as Dimethyl oxalate, Methyl oxalate, Oxalic acid dimethyl ester

CAS 553-90-2Formula C4H6O4Molar mass 118.09 g/molEC 209-053-6
GHS signal word: Danger. Pictograms: Corrosive, Harmful or irritant 8 suppliers listed
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Ethanedioic acid, dimethyl ester chemical structure, C4H6O4, CAS 553-90-2
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
553-90-2
Formula
C4H6O4
Boiling point
163.5 °C
Density
1.148 @25 °C
HS code
291711
Category
Ketone and ester solvents

What is Ethanedioic acid, dimethyl ester?

Plain description, key identifiers and synonyms

Methyl oxalate is a member of dicarboxylic acids and O-substituted derivatives, a methyl ester and a diester. It is functionally related to an oxalic acid.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
dimethyl oxalate
CAS number
553-90-2 CAS number cross-checked
EC number
209-053-6
Molecular formula
C4H6O4
UNII
IQ3Q79344S
MDL number
MFCD00008442
INCI name
DIMETHYL OXALATE
InChIKey
LOMVENUNSWAXEN-UHFFFAOYSA-N
InChI
InChI=1S/C4H6O4/c1-7-3(5)4(6)8-2/h1-2H3
SMILES (canonical and isomeric)
COC(=O)C(=O)OC

Synonyms

  • Dimethyl oxalate
  • Methyl oxalate
  • Oxalic acid dimethyl ester
  • Ethanedioic acid, 1,2-dimethyl ester
  • Dimethyloxalate
  • Oxalic acid, dimethyl ester
  • dimethyl ethanedioate
  • dimethyl ethane-1,2-dioate
  • Dimethyl oxalate, ReagentPlus(R), 99%
  • Dimethyl oxalate, Vetec(TM) reagent grade, 98%

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

Boiling point
163.5 °Cexp.
Density
1.148 @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
118.09 g/molcalc.
Exact mass
118.0266 Dacalc.
LogP (octanol/water)
-0.67calc.
Topological polar surface area
52.6 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
4calc.
Rotatable bonds
0calc.
Heavy atoms
8calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.5calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS05: Corrosive
Corrosive
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H302Harmful if swallowed.
  • H314Causes severe skin burns and eye damage.
  • H315Causes skin irritation.
  • H318Causes serious eye damage.
  • H319Causes serious eye irritation.
Precautionary statements (22)
  • P260Do not breathe dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P270Do not eat, drink or smoke when using this product.
  • 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 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • 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.
  • P317Get medical help.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • P332 + P317If skin irritation occurs: Get medical help.
  • P337 + P317If eye irritation persists: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P363Wash contaminated clothing before reuse.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.

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

Ethanedioic acid, dimethyl ester suppliers

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All 8 suppliers
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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

8 suppliers in 4 countries

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Ethanedioic acid, dimethyl ester 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

Use classes: Cosmetics.

Cosmetic ingredient, INCI name DIMETHYL OXALATE(chelating, plasticiser, solvent)

Functional uses

  • Chelating agent
  • Plasticizer
  • Solvent

Cosmetic functions

  • Chelating
  • Plasticiser
  • Solvent

Regulatory status

Inventories, regulations and trade controls that list this substance

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 Ethanedioic acid, dimethyl ester is traded under.

HS 2917.11Indicative HS code

Oxalic acid, its salts and esters

World exports in 2024
$195M
−30.6% vs 2023, imports $215M
2019 to 2024
Top exporters
  1. China79.1%
  2. India * partner reported4.2%
  3. South Korea3.9%
Top importers
  1. Myanmar * partner reported25.5%
  2. Peru14.9%
  3. Japan6.8%

* Partner reported figures, a lower bound.

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

The HS code shown for Ethanedioic acid, dimethyl ester is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Ethanedioic acid, dimethyl ester, based on the data on this page

What is Ethanedioic acid, dimethyl ester?

Methyl oxalate is a member of dicarboxylic acids and O-substituted derivatives, a methyl ester and a diester. It is functionally related to an oxalic acid.

What is the CAS number of Ethanedioic acid, dimethyl ester?

The CAS registry number of Ethanedioic acid, dimethyl ester is 553-90-2.

What is the molecular formula and weight of Ethanedioic acid, dimethyl ester?

The molecular formula of Ethanedioic acid, dimethyl ester is C4H6O4 and its molar mass is 118.09 g/mol.

What is Ethanedioic acid, dimethyl ester used for?

Use classes: Cosmetics.

Is Ethanedioic acid, dimethyl ester hazardous?

Ethanedioic acid, dimethyl ester carries the GHS signal word "Danger". Main hazards: harmful if swallowed, causes severe skin burns and eye damage, causes skin irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Ethanedioic acid, dimethyl ester?

Ethanedioic acid, dimethyl ester is usually classified under HS code 291711 (Oxalic acid, its salts and esters). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Ethanedioic acid, dimethyl ester?

CompoundList lists 8 suppliers of Ethanedioic acid, dimethyl ester in China, United States, India and Italy. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Ethanedioic acid, dimethyl ester in India?

1 supplier in India list Ethanedioic acid, dimethyl ester on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of Ethanedioic acid, dimethyl ester?

Suppliers quote Ethanedioic acid, dimethyl ester 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 Ethanedioic acid, dimethyl ester

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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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