1,3,5-Trithiane
Also known as: s-Trithiane, sym-Trithiane, 1,3,5-Trithiacyclohexane, Thioformaldehyde trimer, Trithioformaldehyde, Trimethylene trisulfide, Thioform, Trithiometaformaldehyde, sym-Trithian, S-Trithiane, Thioform trimer, 1,3,5-trithian
1,3,5-Trithiane (CAS 291-21-4) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C3H6S3 and a molecular weight of 138.27500 g/mol. Key properties include a melting point of 215-220 °C (dec.)(lit.), a boiling point of 230.7ºC at 760mmHg and a density of 1.318g/cm3. It is classified under GHS with signal word Warning and hazard statements H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 291-21-4
- Jingsj CID
- J-1993581-6
- Molecular Formula
- C3H6S3
- Molecular Weight
- 138.27500 g/mol
- Category
- Aliphatic Hydrocarbons
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 215-220 °C (dec.)(lit.) |
|---|---|
| Boiling Point | 230.7ºC at 760mmHg |
| Density | 1.318g/cm3 |
| Exact Mass | 137.96300 |
| PSA | 75.90000 |
| LogP | 2.07210 |
| Vapor Pressure | 0.0983mmHg at 25°C |
| Refractive Index | 1.651 |
GHS Safety & Compliance
- H319 — Causes serious eye irritation
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 1,3,5-Trithiane?
The CAS number of 1,3,5-Trithiane is 291-21-4.
What are the molecular formula and molecular weight of 1,3,5-Trithiane?
1,3,5-Trithiane has molecular formula C3H6S3 and molecular weight 138.27500 g/mol.
Is 1,3,5-Trithiane hazardous?
1,3,5-Trithiane has GHS signal word Warning and hazard statements H319 — Causes serious eye irritation.
What are the upstream and downstream products of 1,3,5-Trithiane?
For 1,3,5-Trithiane, Upstream Products: Formaldehyde, Carbon disulphide, 2,4-Dichlorophenol; Downstream Products: Benzyl chloromethyl sulfide, Bis(chloromethyl) sulfide, Carbon disulphide.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "1,3,5-Trithiane (CAS 291-21-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1993581-6 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.