Dimethyl oxalate
- CAS No.
- 553-90-2
- Chemical Name:
- Dimethyl oxalate
- Synonyms
- DMO;OXALIC ACID DIMETHYL ESTER;METHYL OXALATE;Dimethyl ethanedioate;OXALIC ACID METHYL ESTER;Dimethyl ester of oxalic acid;209-053-6;CH3OCOCOOCH3;Oxalic acid Me;DIMETHYL OXALATE
- CBNumber:
- CB1429840
- Molecular Formula:
- C4H6O4
- Molecular Weight:
- 118.09
- MDL Number:
- MFCD00008442
- MOL File:
- 553-90-2.mol
- MSDS File:
- SDS
| Product description | Number | Pack Size | Price |
| Dimethyl oxalate ReagentPlus , 99% | 135623 | 5g | $34.3 |
| Dimethyl oxalate ReagentPlus , 99% | 135623 | 100g | $53.1 |
| Dimethyl oxalate for synthesis | 8.22115 | 250g | $35.8 |
| Dimethyl oxalate for synthesis | 8.22115 | 1kg | $143 |
| Dimethyl Oxalate >99.0%(GC) | O0080 | 25g | $20 |
| More product size | |||
| Melting point | 50-54 °C (lit.) |
|---|---|
| Boiling point | 163.5 °C (lit.) |
| Density | 1.148 g/mL at 25 °C (lit.) |
| vapor pressure | 3 hPa (20 °C) |
| refractive index |
n |
| Flash point | 167 °F |
| storage temp. | Store below +30°C. |
| solubility | ethanol: soluble50mg/mL, clear to very slightly hazy, colorless |
| form | Crystalline Solid |
| color | Colorless to white |
| Specific Gravity | 1.148 |
| PH | 1 (60g/l, H2O, 20℃) |
| Water Solubility | 60 G/L (25 ºC) |
| Merck | 14,6106 |
| BRN | 1071744 |
| Henry's Law Constant | 3.4×100 mol/(m3Pa) at 25℃, Duchowicz et al. (2020) |
| Dielectric constant | 3.0（20℃） |
| Stability | Stable. Combustible. Incompatible with strong oxidizing agents, acids, bases, reducing agents. |
| Cosmetics Ingredients Functions |
PLASTICISER CHELATING SOLVENT |
| InChI | 1S/C4H6O4/c1-7-3(5)4(6)8-2/h1-2H3 |
| InChIKey | LOMVENUNSWAXEN-UHFFFAOYSA-N |
| SMILES | COC(=O)C(=O)OC |
| LogP | -0.170 |
| CAS DataBase Reference | 553-90-2(CAS DataBase Reference) |
| EWG's Food Scores | 1-2 |
| FDA UNII | IQ3Q79344S |
| NIST Chemistry Reference | Ethanedioic acid, dimethyl ester(553-90-2) |
| EPA Substance Registry System | Ethanedioic acid, dimethyl ester (553-90-2) |
| UNSPSC Code | 12352108 |
| NACRES | NA.22 |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |   GHS05,GHS07 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Danger | |||||||||
| Hazard statements | H315-H318 | |||||||||
| Precautionary statements | P264-P280-P302+P352-P362+P364-P332+P313-P305+P351+P338+P310 | |||||||||
| Hazard Codes | Xi,Xn | |||||||||
| Risk Statements | 36/38-36-22 | |||||||||
| Safety Statements | 26-36/37-24/25-23 | |||||||||
| RIDADR | 1759 | |||||||||
| WGK Germany | 3 | |||||||||
| RTECS | RO2850000 | |||||||||
| Autoignition Temperature | 480 °C | |||||||||
| TSCA | TSCA listed | |||||||||
| HS Code | 2917 11 00 | |||||||||
| HazardClass | 6.1(b) | |||||||||
| PackingGroup | III | |||||||||
| Storage Class | 8A - Combustible corrosive hazardous materials | |||||||||
| Hazard Classifications | Acute Tox. 4 Oral Eye Dam. 1 Skin Corr. 1B |
|||||||||
| REACH Registrations | Active | |||||||||
| NFPA 704 |
|
Dimethyl oxalate price More Price(38)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | 135623 | Dimethyl oxalate ReagentPlus , 99% | 553-90-2 | 5g | $34.3 | 2026-04-30 | Buy |
| Sigma-Aldrich | 135623 | Dimethyl oxalate ReagentPlus , 99% | 553-90-2 | 100g | $53.1 | 2026-04-30 | Buy |
| Sigma-Aldrich | 8.22115 | Dimethyl oxalate for synthesis | 553-90-2 | 250g | $35.8 | 2022-05-15 | Buy |
| Sigma-Aldrich | 8.22115 | Dimethyl oxalate for synthesis | 553-90-2 | 1kg | $143 | 2022-05-15 | Buy |
| TCI Chemical | O0080 | Dimethyl Oxalate >99.0%(GC) | 553-90-2 | 25g | $20 | 2026-04-30 | Buy |
Dimethyl oxalate Chemical Properties,Uses,Production
Description
Dimethyl oxalate is a chemical compound with formula (CH3)2(COO)2. It is the dimethyl ester of oxalic acid.
General Description
Dimethyl oxalate (DMO), (CH3OCO)2 is an industrial chemical intermediate with versatile properties. DMO is used as a solvent and extraction agent to produce ethylene glycol, ethanol, oxalic acid, oxamide, dyes, and medicines. Besides, dimethyl carbonate (DMC), (CH3O)2CO is attracting lots of interest because of its excellent solubility, biodegradability and low toxicity. DMC could be used as a green solvent, as electrolytes in lithium batteries, as a potential fuel additive and for polycarbonate synthesis[1].
Chemical Properties
colourless crystals
Chemical Properties
The empirical formula of dimethyl oxalate is C4H6O4. It exists as a liquid between its pour point (52°C) and boiling point (163.4°C). It is soluble in ethanol and ether and slightly soluble in water.
Uses
Dimethyl oxalate is used as an alternate fuel in the direct oxidation fuel cell. It is involved in the catalytic hydrogenation using Cu/SiO22ub> to prepare ethylene glycol. It is also used in the selective gas-phase hydrogenation catalyzed by Ag/SiO2 to get the corresponding alcohol.
Definition
ChEBI: Methyl oxalate is a diester, a methyl ester and a member of dicarboxylic acids and O-substituted derivatives. It is functionally related to an oxalic acid.
Synthesis Reference(s)
The Journal of Organic Chemistry, 24, p. 261, 1959 DOI: 10.1021/jo01084a633
General Description
Dimethyl oxalate undergoes Cu/SiO2 catalyzed hydrogenation to yield ethylene glycol. It undergoes selective gas-phase hydrogenation catalyzed by Ag/SiO2 to yield corresponding alcohol.
Synthesis
Process for dimethyl oxalate synthesis via carbon monoxide methyl nitrite route:
1. NO generation from sodium nitrite and dilute nitric acid.
2. Esterification: NO, O, and methanol react in an esterifier to form methyl nitrite.
3. Carbonylation: Methyl nitrite reacts with CO in a carbonylation reactor to form dimethyl oxalate.
4. Product separation: Dimethyl oxalate is absorbed by methanol scrubbing and then purified by distillation.
Purification Methods
Crystallise the ester repeatedly from EtOH. De-gas it under nitrogen at high vacuum and distil it. [Beilstein 2 IV 1847.]
References
[1] Chunzheng Wang. “Emerging Co-Synthesis of Dimethyl Oxalate and Dimethyl Carbonate Using Pd/Silicalite-1 Catalyst with Synergistic Interactions of Pd and Silanols.” SSRN Electronic Journal 71 1 (2023).
Dimethyl oxalate Preparation Products And Raw materials
Raw materials
1of2
Preparation Products
1of3
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Changyi Longchang Bio-Chemical Co., LTD | +86-13256193735; +86-13256193735 | info@longchangchemical.com | China | 1044 | 58 |
| Zouping mingyuan import & export trading co., ltd | +86-0543-2240078 +8618364991597 | myzhao793@163.com | China | 981 | 58 |
| Hebei Chuanghai Biotechnology Co., Ltd | +86-15350571055 | Sibel@chuanghaibio.com | China | 8738 | 58 |
| Hebei Chuanghai Biotechnology Co,.LTD | +86-86-13131129325 | sales1@chuanghaibio.com | China | 5220 | 58 |
| Capot Chemical Co.,Ltd. | +86-（0）57185586718 +86-13336195806 | sales@capot.com | China | 29640 | 60 |
| Henan Tianfu Chemical Co.,Ltd. | +86-0371-55170693 +86-19937530512 | info@tianfuchem.com | China | 21585 | 55 |
| Anhui Royal Chemical Co., Ltd. | +86-025-86655873 +86-13962173137 | marketing@royal-chem.com | China | 201 | 55 |
| career henan chemical co | +86-0371-86658258 | sales@coreychem.com | China | 29812 | 58 |
| Jinan Finer Chemical Co., Ltd | +86-531-88989536 +86-15508631887 | sales@finerchem.com | China | 2950 | 58 |
| Henan Xiangtong Chemical Co., Ltd. | 86-371-61312303 | info@hnxtchem.com | CHINA | 292 | 58 |
Related articles
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- Dimethyl oxalate is a crystalline diester soluble in organic solvents and hot water, prone to hydrolysis, transesterification ....
- Jul 4，2026
View Lastest Price from Dimethyl oxalate manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2026-05-28 | Dimethyl Oxalate
553-90-2
|
$9.00 | 1ASSAYS | 99% | 10000kg | Hebei Chuanghai Biotechnology Co,.LTD | |
 |
2026-05-15 | Dimethyl oxalate
553-90-2
|
$1.50 | 1g | 99.0% Min | 100 Tons | Shaanxi Didu New Materials Co. Ltd | |
 |
2026-03-20 | Dimethyl oxalate
553-90-2
|
$1.00 | 1KG | 99% | 10 mt | Hebei Chuanghai Biotechnology Co., Ltd |
-
- Dimethyl Oxalate
553-90-2
- $9.00
- 99%
- Hebei Chuanghai Biotechnology Co,.LTD
-
- Dimethyl oxalate
553-90-2
- $1.50
- 99.0% Min
- Shaanxi Didu New Materials Co. Ltd
-
- Dimethyl oxalate
553-90-2
- $1.00
- 99%
- Hebei Chuanghai Biotechnology Co., Ltd
