- Dimethyl oxalate
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- $1.00 / 25KG
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2026-01-05
- CAS:553-90-2
- Min. Order: 1KG
- Purity: 99%
- Supply Ability: 10 mt
- Dimethyl Oxalate
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- $9.00 / 1ASSAYS
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2025-05-26
- CAS:553-90-2
- Min. Order: 1ASSAYS
- Purity: 99%
- Supply Ability: 10000kg
- DIMETHYL OXALATE
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- $0.00 / 25KG
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2025-04-18
- CAS:553-90-2
- Min. Order: 1KG
- Purity: 99.5%
- Supply Ability: 200TONS
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| | Dimethyl oxalate Basic information |
| | Dimethyl oxalate Chemical Properties |
| 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 | n20/D 1.39(lit.) | | Fp | 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 | | 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) | | NIST Chemistry Reference | Ethanedioic acid, dimethyl ester(553-90-2) | | EPA Substance Registry System | Ethanedioic acid, dimethyl ester (553-90-2) |
| 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 |
| | Dimethyl oxalate Usage And Synthesis |
| 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).
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| | Dimethyl oxalate Preparation Products And Raw materials |
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