1,4-Dithiane-2,5-diol
Also known as: 2,5-Dihydroxy-1,4-dithiane, p-Dithiane-2,5-diol, Mercaptoacetaldehyde dimer, 1,4-Dithian-2,5-diol, 2,5-Dihydroxy-1,4-dithiacyclohexane
1,4-Dithiane-2,5-diol (CAS 40018-26-6) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C4H8O2S2 and a molecular weight of 152.235 g/mol. Key properties include a melting point of 130 °C (dec.)(lit.), a boiling point of 360.9±42.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 175.5±26.6 °C. It is classified under GHS with signal word Danger and hazard statements H301 — Toxic if swallowed, H317 — May cause an allergic skin reaction and H318 — Causes serious eye damage. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 40018-26-6
- Jingsj CID
- J-1061894-7
- Molecular Formula
- C4H8O2S2
- Molecular Weight
- 152.235 g/mol
- Category
- Aliphatic Hydrocarbons
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 130 °C (dec.)(lit.) |
|---|---|
| Boiling Point | 360.9±42.0 °C at 760 mmHg |
| Density | 1.5±0.1 g/cm3 |
| Flash Point | 175.5±26.6 °C |
| Exact Mass | 151.996567 |
| PSA | 91.06000 |
| LogP | -0.07 |
| Vapor Pressure | 0.0±1.8 mmHg at 25°C |
| Refractive Index | 1.689 |
| Additional Property | 3.9 g/L (20 ºC) |
GHS Safety & Compliance
- H301 — Toxic if swallowed
- H317 — May cause an allergic skin reaction
- H318 — Causes serious eye damage
Customs & Trade Information
| HS Code | 2934999090 |
|---|---|
| Summary | 2934999090. other heterocyclic compounds. 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 1,4-Dithiane-2,5-diol?
The CAS number of 1,4-Dithiane-2,5-diol is 40018-26-6.
What are the molecular formula and molecular weight of 1,4-Dithiane-2,5-diol?
1,4-Dithiane-2,5-diol has molecular formula C4H8O2S2 and molecular weight 152.235 g/mol.
Is 1,4-Dithiane-2,5-diol hazardous?
1,4-Dithiane-2,5-diol has GHS signal word Danger and hazard statements H301 — Toxic if swallowed; H317 — May cause an allergic skin reaction; H318 — Causes serious eye damage.
What are the upstream and downstream products of 1,4-Dithiane-2,5-diol?
For 1,4-Dithiane-2,5-diol, Upstream Products: Chloroacetaldehyde; Downstream Products: tert-butyl 2-aminothiophene-3-carboxylate, Methyl 2-aminothiophene-3-carboxylate, Ethyl 2-aminothiophene-3-carboxylate.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "1,4-Dithiane-2,5-diol (CAS 40018-26-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1061894-7 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.