cis-3,4-Dichlorocyclobutene
cis-3,4-Dichlorocyclobutene (CAS: 2957-95-1, C4H4Cl2) is a halogenated hydrocarbon with a molecular weight of 122.98 g/mol. As a versatile organic building block, it finds application in chemical synthesis and as an intermediate. Its distinct chemical structure allows for its use in research and development for creating more complex molecules. Tech Serve Solutions supplies this compound with a purity of ≥95.0% (GC).
- Synonyms
- C4H4Cl2

Organic Synthesis
cis-3,4-Dichlorocyclobutene serves as a valuable building block in organic synthesis. Its reactive nature enables its participation in various chemical transformations to construct complex molecular architectures.
Research and Development
This compound is utilised in research laboratories for exploring new synthetic pathways and developing novel chemical entities. Its specific stereochemistry and functional groups make it a useful tool for synthetic chemists.
Intermediate in Chemical Manufacturing
As a halogenated hydrocarbon, cis-3,4-Dichlorocyclobutene can function as an intermediate in the production of other fine chemicals and specialty materials. Its dichlorinated cyclobutene structure offers unique reactivity.
| Molecular weight | 122.98 |
|---|---|
| Empirical formula | C4H4Cl2 |
| Assay | ≥95.0% (GC) |
| Boiling point | 74-76 °C/55 mmHg(lit.) |
| Density | 1.302 g/mL at 20 °C(lit.) |
| Refractive index | n20/D 1.503 |
| Storage temperature | 2-8°C |

Hazard statements
- H226Flammable liquid and vapour
| Protective equipment | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 55 °C / 131 °F |
| Transport (UN / ADR) | UN 1993C 3 / PGIII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | F |
| Risk statements (R) | 10 |
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 cis-3,4-Dichlorocyclobutene used for?
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cis-3,4-Dichlorocyclobutene is primarily used as a building block in organic synthesis and in research and development for creating novel chemical compounds.
What is the CAS number and formula for cis-3,4-Dichlorocyclobutene?
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The CAS number is 2957-95-1 and the empirical formula is C4H4Cl2.
What grade and purity does Tech Serve Solutions supply for cis-3,4-Dichlorocyclobutene?
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Tech Serve Solutions supplies cis-3,4-Dichlorocyclobutene with a purity of ≥95.0% (GC). We do not represent this product as USP, BP, EP or other pharmacopoeial grades.
What are the primary safety hazards associated with cis-3,4-Dichlorocyclobutene?
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cis-3,4-Dichlorocyclobutene is a flammable liquid and vapour (H226). It requires careful handling, appropriate personal protective equipment including eyeshields and suitable gloves, and should be stored in a well-ventilated area away from ignition sources, at 2-8°C.
Is cis-3,4-Dichlorocyclobutene available for export?
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Yes, Tech Serve Solutions is a global supplier and exporter of fine chemicals, including cis-3,4-Dichlorocyclobutene, ensuring it is packed and shipped according to international regulations.
How can I request a quote or sample for cis-3,4-Dichlorocyclobutene?
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To request a quote or sample for cis-3,4-Dichlorocyclobutene, please contact our sales team through the website or by phone, providing your specific requirements and shipping details.
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