4-Ethynyl-α,α,α-trifluorotoluene
Also known as: 1-ethynyl-4-(trifluoromethyl)benzene, 4-(Trifluoromethyl)phenylacetylene, 4'-TRIFLUOROMETHYLPHENYL ACETYLENE, 4-Ethynyl trifluorotoluene, 4-ethynyl trifluorotoluene (4-(trifluoromethyl)phenylacetylene), Benzene, 1-ethynyl-4-(trifluoromethyl)-, MFCD01861903, 4-ETHYNYL-ALPHA,ALPHA,ALPHA-TRIFLUOROTOLUENE
4-Ethynyl-α,α,α-trifluorotoluene (CAS 705-31-7) is a compound in the Solvents category listed in the Jingsj chemical database. It has the molecular formula C9H5F3 and a molecular weight of 170.131 g/mol. Key properties include a boiling point of 155.2±40.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 40.2±15.3 °C. It is classified under GHS with signal word Danger and hazard statements H225 — Highly flammable liquid and vapour. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 705-31-7
- Jingsj CID
- J-10671-8
- Molecular Formula
- C9H5F3
- Molecular Weight
- 170.131 g/mol
- Category
- Solvents
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 155.2±40.0 °C at 760 mmHg |
|---|---|
| Density | 1.2±0.1 g/cm3 |
| Flash Point | 40.2±15.3 °C |
| Exact Mass | 170.034332 |
| LogP | 2.97 |
| Vapor Pressure | 3.9±0.3 mmHg at 25°C |
| Refractive Index | 1.467 |
GHS Safety & Compliance
- H225 — Highly flammable liquid and vapour
Customs & Trade Information
| HS Code | 2903999090 |
|---|---|
| Summary | 2903999090 halogenated derivatives of aromatic hydrocarbons VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:5.5% General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of 4-Ethynyl-α,α,α-trifluorotoluene?
The CAS number of 4-Ethynyl-α,α,α-trifluorotoluene is 705-31-7.
What are the molecular formula and molecular weight of 4-Ethynyl-α,α,α-trifluorotoluene?
4-Ethynyl-α,α,α-trifluorotoluene has molecular formula C9H5F3 and molecular weight 170.131 g/mol.
Is 4-Ethynyl-α,α,α-trifluorotoluene hazardous?
4-Ethynyl-α,α,α-trifluorotoluene has GHS signal word Danger and hazard statements H225 — Highly flammable liquid and vapour.
What are the upstream and downstream products of 4-Ethynyl-α,α,α-trifluorotoluene?
For 4-Ethynyl-α,α,α-trifluorotoluene, Upstream Products: Trimethyl((4-(trifluoromethyl)phenyl)ethynyl)silane, 4-Bromobenzotrifluoride, 4-Iodobenzotrifluoride; Downstream Products: 4-(Trifluoromethyl)benzoic acid, 4-(Trifluoromethyl)styrene, (E)-2-(Trifluoromethyl)cinnamic acid.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "4-Ethynyl-α,α,α-trifluorotoluene (CAS 705-31-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-10671-8 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.