Product Name:	1,3-DIIODOBENZENE
Synonyms:	1,3-diiodo-benzen;Benzene, 1,3-diiodo-;Benzene, m-diiodo-;benzene,1,3-diiodo-;Benzene,m-diiodo-;M-DIIODOBENZENE;1,3-DIIODOBENZENE;1,3-diiodo-benzen、1,3-diiodobenzene、m-Diiodobenzene、1,3-diiodo-benzene、1,3-Dijodbenzol
CAS:	626-00-6
MF:	C6H4I2
MW:	329.9
EINECS:	210-921-1
Structure:
Email	Judy@coreychem.com

1,3-Diiodobenzene (CAS No. 626-00-6)

Q1: What is it? What are its key properties?

1,3-Diiodobenzene, also known as m-Diiodobenzene, is an iodine-containing aromatic compound widely used as an intermediate in organic synthesis.

Key properties:

• Product Name: 1,3-Diiodobenzene
• CAS No.: 626-00-6
• Molecular Formula: C₆H₄I₂
• Molecular Weight: 329.90 g/mol
• Appearance: White to light yellow crystalline solid
• Melting Point: Approximately 34–37°C
• Water Solubility: Insoluble in water
• Physical Form: Solid at normal room temperature, but it may soften or melt at elevated temperatures.

Due to its relatively low melting point, temperature control should be considered during storage and transportation.

Q2: What is it used for?

1,3-Diiodobenzene is mainly used as an organic synthesis intermediate.

Typical applications include:

• Organic synthesis
• Cross-coupling reactions, such as Suzuki coupling
• Pharmaceutical intermediate synthesis
• Agrochemical intermediate synthesis
• Synthesis of fine chemicals and functional materials

The two iodine atoms provide useful reaction sites for further functionalization and coupling reactions.

Q3: Solid form or aqueous solution — which should I choose?

The solid form is recommended.

1,3-Diiodobenzene is insoluble in water, so it is normally supplied and used as a solid rather than as an aqueous solution.

If a solution is required for a specific application, an appropriate organic solvent may be considered depending on the customer’s reaction system and process requirements.

For commercial quantities, the product is generally supplied as a solid crystalline material in suitable sealed packaging.

Q4: What precautions apply when handling it?

Appropriate personal protective equipment should be used when handling 1,3-Diiodobenzene.

Recommended precautions include:

• Wear appropriate protective gloves.
• Wear safety goggles or suitable eye protection.
• Avoid inhalation of dust.
• Avoid direct contact with skin and eyes.
• Handle in a well-ventilated area.
• Wash hands thoroughly after handling.
• Keep the material away from strong oxidizing agents.

Please refer to the latest Safety Data Sheet (SDS) for detailed hazard classification and handling requirements.

Q5: How should it be stored and transported?

Storage:

• Store in a cool, dry and well-ventilated place.
• Keep the container tightly closed.
• Protect from direct sunlight and excessive heat.
• Refrigerated storage, such as 2–8°C, may be recommended depending on the product specification and supplier’s SDS.
• Avoid prolonged exposure to temperatures above its melting point of approximately 34–37°C.

Transportation:

The product should be transported in secure, tightly sealed and suitable packaging. Exposure to excessive heat and direct sunlight should be avoided, especially during warm-weather transportation.

Please note that the recommended storage temperature and the regulatory transportation requirements are not necessarily the same. The actual transportation conditions should be confirmed based on the latest SDS, product specification, packaging configuration, transportation route, and carrier requirements.

For international shipments, the applicable transportation classification and documentation should be confirmed with the relevant logistics provider before shipment.