2,3-Dichlorohexafluoro-2-butene, mixture of cis and trans
2,3-Dichlorohexafluoro-2-butene (CAS: 303-04-8) is a halogenated alkene supplied by Tech Serve Solutions. This compound, with the linear formula CF3C(Cl)=CClCF3 and a molecular weight of 232.94 g/mol, exists as a mixture of cis and trans isomers. It is primarily utilised as a building block in organic synthesis and chemical research, particularly in areas involving halogenated hydrocarbons. Its specific properties make it a valuable reagent for introducing fluorinated and chlorinated moieties into complex molecules.
- Synonyms
- 303-04-8CF3C(Cl)=C(Cl)CF3

Organic Synthesis Building Block
2,3-Dichlorohexafluoro-2-butene serves as a versatile building block in the synthesis of novel organic compounds. Its unique structure allows for the introduction of fluorinated and chlorinated fragments into target molecules, facilitating the development of new materials and pharmaceuticals.
Chemical Research Reagent
This compound is employed in research laboratories for exploring new reaction pathways and developing innovative chemical processes. Its reactivity as a halogenated alkene makes it suitable for various addition and substitution reactions.
Fluorinated Compound Intermediate
As a precursor to other fluorinated organic molecules, 2,3-Dichlorohexafluoro-2-butene is instrumental in the production of specialty chemicals. It provides a route to compounds with enhanced thermal stability and unique electronic properties.
| Molecular weight | 232.94 |
|---|---|
| Linear formula | CF3C(Cl)=C(Cl)CF3 |
| Assay | 99% |
| Boiling point | 66-68 °C(lit.) |
| Density | 1.605 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.3458(lit.) |
| Vapour pressure | 4.42 psi (20 °C) |
| Vapour density | 8 (vs air) |


Hazard statements
- H314Causes severe skin burns and eye damage
- H330Fatal if inhaled
Precautionary statements
- P260Do not breathe dust, fume, gas, mist, vapours or spray
- P280Wear protective gloves, clothing and eye/face protection
- P284Wear respiratory protection
- P305IF IN EYES
- P310Immediately call a POISON CENTER or doctor
| Protective equipment | Faceshields, full-face respirator (US), Gloves, Goggles, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Transport (UN / ADR) | UN 3389 8(6.1) / PGI |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | T+ |
| Risk statements (R) | 26-34 |
| Safety statements (S) | 26-28-36/37/39-45 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is 2,3-Dichlorohexafluoro-2-butene used for?
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2,3-Dichlorohexafluoro-2-butene (CAS: 303-04-8) is used as a building block in organic synthesis and as a reagent in chemical research, particularly for introducing fluorinated and chlorinated groups into organic molecules.
What is the CAS number and formula for 2,3-Dichlorohexafluoro-2-butene?
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The CAS number for 2,3-Dichlorohexafluoro-2-butene is 303-04-8. The linear formula is CF3C(Cl)=CClCF3.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 2,3-Dichlorohexafluoro-2-butene with an assay of 99%. This is a technical grade product, and TSS does not represent it as USP, BP, or EP.
How should 2,3-Dichlorohexafluoro-2-butene be handled safely?
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2,3-Dichlorohexafluoro-2-butene is classified as Danger, with hazards including severe skin burns and eye damage (H314) and being fatal if inhaled (H330). Appropriate personal protective equipment, including full-face respirators and chemical-resistant gloves, must be used. Handle only in a well-ventilated area or under a fume hood. Refer to the Safety Data Sheet (SDS) for comprehensive handling information.
Is 2,3-Dichlorohexafluoro-2-butene exported by TSS?
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Yes, Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals, including 2,3-Dichlorohexafluoro-2-butene.
How can I request a quote or sample?
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To request a quote or a sample of 2,3-Dichlorohexafluoro-2-butene, please contact the Tech Serve Solutions sales team via the website or provided contact details.
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