1,3-Diiodobenzene
1,3-Diiodobenzene (CAS: 626-00-6) is an aromatic organic compound with the molecular formula C6H4I2. This diiodinated benzene derivative serves as a valuable building block in organic synthesis. Its structure, featuring two iodine atoms meta-positioned on a benzene ring, facilitates various coupling reactions and functional group transformations. It is commonly employed in the development of complex organic molecules for research and development purposes.
- Synonyms
- C6H4I2Benzene, 1,3-diiodo-

Organic Synthesis Intermediate
1,3-Diiodobenzene is a key intermediate in the synthesis of complex organic molecules. The reactive carbon-iodine bonds enable its use in cross-coupling reactions, such as Suzuki, Sonogashira, and Heck couplings, for the formation of new carbon-carbon bonds.
Material Science Precursor
This compound can serve as a precursor for the synthesis of novel materials, including organic semiconductors and polymers. The introduction of iodine atoms can influence the electronic and structural properties of the resulting materials.
Research and Development
It is widely used in academic and industrial research laboratories for exploring new synthetic methodologies and developing novel chemical entities. Its defined structure makes it suitable for mechanistic studies and proof-of-concept experiments.
| Molecular weight | 329.90 |
|---|---|
| Empirical formula | C6H4I2 |
| Assay | 98% |
| Melting point | 34-37 °C(lit.) |

Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Flash point | 113 °C / 235.4 °F |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26-36 |
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 1,3-Diiodobenzene used for?
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1,3-Diiodobenzene is primarily used as a building block and intermediate in organic synthesis, particularly in cross-coupling reactions for creating complex organic molecules and as a precursor in material science research.
What is the CAS number and formula for 1,3-Diiodobenzene?
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The CAS number for 1,3-Diiodobenzene is 626-00-6, and its molecular formula is C6H4I2.
What grade and purity does Tech Serve Solutions supply for 1,3-Diiodobenzene?
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Tech Serve Solutions supplies 1,3-Diiodobenzene with a purity of 98%. We do not represent this product as USP, BP, EP, or pharmaceutical grade.
How should 1,3-Diiodobenzene be handled safely?
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1,3-Diiodobenzene can cause skin irritation (H315), serious eye irritation (H319), and may cause respiratory irritation (H335). Always wear appropriate personal protective equipment, including eyeshields, gloves, and a dust mask type N95 (US), and ensure good ventilation.
How is 1,3-Diiodobenzene packed and shipped?
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1,3-Diiodobenzene is carefully packed to ensure safe transit and is exported by Tech Serve Solutions adhering to all relevant shipping regulations for chemical products.
How can I request a quote or sample for 1,3-Diiodobenzene?
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To request a quote or sample of 1,3-Diiodobenzene, please contact our sales team through the website or by phone, providing your specific requirements.
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