Dimethyl sulfate
Also known as: Dimethyl sulphate, Methyl sulfate, Sulfuric acid dimethyl ester, Dimethoxysulfone, Methylsulphate, DMS
Dimethyl sulfate (CAS 77-78-1) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C2H6O4S and a molecular weight of 126.132 g/mol. Key properties include a melting point of -32ºC, a boiling point of 188.0±0.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 83.3±0.0 °C. It is classified under GHS with signal word Danger and hazard statements H301 — Toxic if swallowed, H314 — Causes severe skin burns and eye damage and H317 — May cause an allergic skin reaction. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 77-78-1
- Jingsj CID
- J-5920-1
- Molecular Formula
- C2H6O4S
- Molecular Weight
- 126.132 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | -32ºC |
|---|---|
| Boiling Point | 188.0±0.0 °C at 760 mmHg |
| Density | 1.3±0.1 g/cm3 |
| Flash Point | 83.3±0.0 °C |
| Exact Mass | 125.998680 |
| PSA | 60.98000 |
| LogP | 0.08 |
| Additional Property | 4.3 (vs air) |
| Vapor Pressure | 0.8±0.3 mmHg at 25°C |
| Refractive Index | 1.410 |
| Additional Property | ethanol: 0.26 g/mL, clear, colorless | 2.8 g/100 mL (18 ºC) |
GHS Safety & Compliance
- H301 — Toxic if swallowed
- H314 — Causes severe skin burns and eye damage
- H317 — May cause an allergic skin reaction
- H330 — Fatal if inhaled
- H341 — Suspected of causing genetic defects
- H350 — May cause cancer
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 sulfate?
The CAS number of Dimethyl sulfate is 77-78-1.
What are the molecular formula and molecular weight of Dimethyl sulfate?
Dimethyl sulfate has molecular formula C2H6O4S and molecular weight 126.132 g/mol.
Is Dimethyl sulfate hazardous?
Dimethyl sulfate has GHS signal word Danger and hazard statements H301 — Toxic if swallowed; H314 — Causes severe skin burns and eye damage; H317 — May cause an allergic skin reaction.
What are the upstream and downstream products of Dimethyl sulfate?
For Dimethyl sulfate, Upstream Products: Methanol, Dimethyl ether, Trimethyl phosphite; Downstream Products: 3-phenylbutan-2-one, 3-tert-butyl-4-methoxybenzaldehyde, 3-(2-Methoxyphenyl)propan-1-ol.
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 sulfate (CAS 77-78-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-5920-1 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.