Dimethyl dicarbonate
Also known as: Dimethyl pyrocarbonate, DMDC, Velcorin, Pyrocarbonic acid dimethyl ester, Dicarbonic acid dimethyl ester, Methyl pyrocarbonate, Methoxycarbonyl methyl carbonate, Carbonic acid, methoxycarbonyl methyl ester
Dimethyl dicarbonate (CAS 4525-33-1) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C4H6O5 and a molecular weight of 134.087 g/mol. Key properties include a melting point of 15-17ºC, a boiling point of 171.4±0.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 80.0±0.0 °C. 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.
- 4525-33-1
- Jingsj CID
- J-20929-0
- Molecular Formula
- C4H6O5
- Molecular Weight
- 134.087 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 15-17ºC |
|---|---|
| Boiling Point | 171.4±0.0 °C at 760 mmHg |
| Density | 1.2±0.1 g/cm3 |
| Flash Point | 80.0±0.0 °C |
| Exact Mass | 134.021530 |
| PSA | 61.83000 |
| LogP | 0.42 |
| Vapor Pressure | 1.4±0.3 mmHg at 25°C |
| Refractive Index | 1.395 |
| Additional Property | 35g/l (decomposition) |
GHS Safety & Compliance
- H302 — Harmful if swallowed
- H312 — Harmful in contact with skin
- H314 — Causes severe skin burns and eye damage
- H330 — Fatal if inhaled
Customs & Trade Information
| HS Code | 2920909090 |
|---|---|
| Summary | 2920909090 esters of other inorganic acids of non-metals (excluding esters of hydrogen halides) and their salts; their halogenated, sulphonated, nitrated or nitrosated derivatives。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:6.5%。General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of Dimethyl dicarbonate?
The CAS number of Dimethyl dicarbonate is 4525-33-1.
What are the molecular formula and molecular weight of Dimethyl dicarbonate?
Dimethyl dicarbonate has molecular formula C4H6O5 and molecular weight 134.087 g/mol.
Is Dimethyl dicarbonate hazardous?
Dimethyl dicarbonate 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 Dimethyl dicarbonate?
For Dimethyl dicarbonate, Downstream Products: Methyl 4-acetylbenzoate, N-tert-Butoxycarbonyl-L-proline methyl ester, Methyl cyclohexanecarboxylate.
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 dicarbonate (CAS 4525-33-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-20929-0 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.