Dimethyl oxalate
Also known as: Methyl oxalate, Oxalic acid dimethyl ester, Dimethyl ethanedioate, Ethanedioic acid, dimethyl ester, DMO, CH3OCOCOOCH3, Oxalic acid methyl ester, Dimethyl ester of oxalic acid, MFCD00008442, UNII-IQ3Q79344S, EINECS 209-053-6, Oxalicdimethylester, dimethyl ethanedioate, dimetyl oxalate, methyl ethanedioate, oxalic acid diester, OXALIC ACID BIS-METHYL ESTER
Dimethyl oxalate (CAS 553-90-2) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C4H6O4 and a molecular weight of 118.088 g/mol. Key properties include a melting point of 50-54 °C(lit.), a boiling point of 163.5±0.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 75.0±0.0 °C. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation and H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 553-90-2
- Jingsj CID
- J-1522785-7
- Molecular Formula
- C4H6O4
- Molecular Weight
- 118.088 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 50-54 °C(lit.) |
|---|---|
| Boiling Point | 163.5±0.0 °C at 760 mmHg |
| Density | 1.2±0.1 g/cm3 |
| Flash Point | 75.0±0.0 °C |
| Exact Mass | 118.026611 |
| PSA | 52.60000 |
| LogP | -0.34 |
| Vapor Pressure | 2.1±0.3 mmHg at 25°C |
| Refractive Index | 1.391 |
| Additional Property | 60 G/L (25 ºC) |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
Customs & Trade Information
| HS Code | 2917119000 |
|---|---|
| Summary | 2917119000 oxalic acid salts and esters VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:6.5% General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of Dimethyl oxalate?
The CAS number of Dimethyl oxalate is 553-90-2.
What are the molecular formula and molecular weight of Dimethyl oxalate?
Dimethyl oxalate has molecular formula C4H6O4 and molecular weight 118.088 g/mol.
Is Dimethyl oxalate hazardous?
Dimethyl oxalate has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation.
What are the upstream and downstream products of Dimethyl oxalate?
For Dimethyl oxalate, Upstream Products: Methanol, Oxalyl chloride, Methyl nitrite; Downstream Products: Methyl 2,4-dioxo-4-(pyridin-4-yl)butanoate, 1-Methyl-6-nitro-1H-benzimidazole, 1-methyl-5-nitro-1H-benzimidazole.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Dimethyl oxalate (CAS 553-90-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1522785-7 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.