1,1'-Oxalyldiimidazole
Also known as: 1,2-Di(1H-imidazol-1-yl)ethane-1,2-dione, 1H-Imidazole,1,1'-(1,2-dioxo-1,2-ethanediyl)bis-, N,N'-Oxalyldiimidazole, oxalic acid diimidazolide, oxalyl imidazole, 1,1'-Oxalyldi(1H-imidazole), 1,2-Bis(1H-imidazol-1-yl)ethane-1,2-dione, 1,2-Bis(1-imidazolyl)ethane-1,2-dione, NSC299886
1,1'-Oxalyldiimidazole (CAS 18637-83-7) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C8H6N4O2 and a molecular weight of 190.15900 g/mol. Key properties include a melting point of 114-116 °C(lit.), a boiling point of 441.4ºC at 760mmHg, a density of 1.46g/cm3 and a flash point of 220.7ºC. It is classified under GHS with signal word Danger and hazard statements H302 — Harmful if swallowed, H312 — Harmful in contact with skin and H314 — Causes severe skin burns and eye damage. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 18637-83-7
- Jingsj CID
- J-48939-4
- Molecular Formula
- C8H6N4O2
- Molecular Weight
- 190.15900 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 114-116 °C(lit.) |
|---|---|
| Boiling Point | 441.4ºC at 760mmHg |
| Density | 1.46g/cm3 |
| Flash Point | 220.7ºC |
| Exact Mass | 190.04900 |
| PSA | 69.78000 |
| LogP | 0.06020 |
| Vapor Pressure | 5.46E-08mmHg at 25°C |
| Refractive Index | 1.696 |
| Storage Conditions | Refrigerator |
GHS Safety & Compliance
- H302 — Harmful if swallowed
- H312 — Harmful in contact with skin
- H314 — Causes severe skin burns and eye damage
Customs & Trade Information
| HS Code | 2933290090 |
|---|---|
| Summary | 2933290090. other compounds containing an unfused imidazole ring (whether or not hydrogenated) in the structure. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of 1,1'-Oxalyldiimidazole?
The CAS number of 1,1'-Oxalyldiimidazole is 18637-83-7.
What are the molecular formula and molecular weight of 1,1'-Oxalyldiimidazole?
1,1'-Oxalyldiimidazole has molecular formula C8H6N4O2 and molecular weight 190.15900 g/mol.
Is 1,1'-Oxalyldiimidazole hazardous?
1,1'-Oxalyldiimidazole has GHS signal word Danger and hazard statements H302 — Harmful if swallowed; H312 — Harmful in contact with skin; H314 — Causes severe skin burns and eye damage.
What are the upstream and downstream products of 1,1'-Oxalyldiimidazole?
For 1,1'-Oxalyldiimidazole, Upstream Products: Imidazole, Oxalyl chloride, 1-(Trimethylsilyl)imidazole; Downstream Products: 1H-Imidazole-1-carboxaldehyde, 1-(Trimethylacetyl)imidazole, Diethyl oxalate.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "1,1'-Oxalyldiimidazole (CAS 18637-83-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-48939-4 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.