Diethyl sulfate
Also known as: Diethyl sulphate, Ethyl sulfate, Sulfuric acid diethyl ester, Diethylsulfate, Diethyl monosulfate, DS
Diethyl sulfate (CAS 64-67-5) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C4H10O4S and a molecular weight of 154.185 g/mol. Key properties include a melting point of -24 °C, a boiling point of 208.0±0.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 78.3±0.0 °C. It is classified under GHS with signal word Danger and hazard statements H302 — Harmful if swallowed, H332 — Harmful if inhaled and H311 — Toxic in contact with skin. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 64-67-5
- Jingsj CID
- J-35278-5
- Molecular Formula
- C4H10O4S
- Molecular Weight
- 154.185 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | -24 °C |
|---|---|
| Boiling Point | 208.0±0.0 °C at 760 mmHg |
| Density | 1.2±0.1 g/cm3 |
| Flash Point | 78.3±0.0 °C |
| Exact Mass | 154.029984 |
| PSA | 60.98000 |
| LogP | 1.14 |
| Additional Property | 5.3 (vs air) |
| Vapor Pressure | 0.3±0.3 mmHg at 25°C |
| Refractive Index | 1.426 |
| Additional Property | 5 g/L (20 ºC) |
GHS Safety & Compliance
- H302 — Harmful if swallowed
- H332 — Harmful if inhaled
- H311 — Toxic in contact with skin
- H314 — Causes severe skin burns and eye damage
- H340
- 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 Diethyl sulfate?
The CAS number of Diethyl sulfate is 64-67-5.
What are the molecular formula and molecular weight of Diethyl sulfate?
Diethyl sulfate has molecular formula C4H10O4S and molecular weight 154.185 g/mol.
Is Diethyl sulfate hazardous?
Diethyl sulfate has GHS signal word Danger and hazard statements H302 — Harmful if swallowed; H332 — Harmful if inhaled; H311 — Toxic in contact with skin.
What are the upstream and downstream products of Diethyl sulfate?
For Diethyl sulfate, Upstream Products: Arsenic triethoxide, Ethanol, Triethyl phosphite; Downstream Products: Ethyl oleanolate, Methyl 3-ethoxybenzoate, 3-Bromo-9-ethylcarbazole.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Diethyl sulfate (CAS 64-67-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-35278-5 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.