2,2'-Bis(2-chlorophenyl)-4,4',5,5'-tetraphenyl-1,2'-biimidazole [Photopolymerization Initiator] TCI B1225

Chemical Identity

CAS No.: 7189-82-4
PubChem: CID 81610·SID 87564161
Formula: C42H28Cl2N4
Molecular weight: 659.6 g/mol
Purity: >97.0%(T)
Reference databases: ECHA

Full identifiers (IUPAC, SMILES, InChIKey)

IUPAC: 2-(2-chlorophenyl)-1-[2-(2-chlorophenyl)-4,5-diphenylimidazol-2-yl]-4,5-diphenylimidazole
SMILES: C1=CC=C(C=C1)C2=C(N(C(=N2)C3=CC=CC=C3Cl)C4(N=C(C(=N4)C5=CC=CC=C5)C6=CC=CC=C6)C7=CC=CC=C7Cl)C8=CC=CC=C8
InChIKey: MHDULSOPQSUKBQ-UHFFFAOYSA-N

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This material, known as TCI B1225 7189-82-4 2,2'-Bis(2-chlorophenyl)-4,4',5,5'-tetraphenyl-1,2'-biimidazole, is a photopolymerization initiator widely used in chemical and materials science experiments. As a key component in photopolymerization processes, it enables the initiation of polymerization reactions under UV light exposure. Its role is critical in laboratories where light-activated chemical reactions are required, particularly in the development of optically responsive materials and composites. This compound is essential for researchers aiming to control and accelerate polymer formation through controlled light exposure.

The compound is preferred due to its high sensitivity to ultraviolet light and its ability to efficiently trigger chemical reactions. It exhibits excellent chemical stability under specific conditions, making it suitable for repeated use in various experimental setups. Its reliability and consistent performance make it a trusted choice in both academic and industrial research environments. The material’s unique properties allow it to be used in applications where precise and rapid chemical activation is necessary, ensuring reproducibility and accuracy in laboratory results.

In Indonesian laboratories, this material is commonly used in optical material research, photopolymer development, and industrial applications requiring light-induced polymerization. It plays a vital role in advancing material science and chemical engineering studies, particularly in higher education institutions and research organizations. Its relevance extends to the development of new technologies and materials that rely on light-activated chemical processes.

TCI brochures (PDF)

Polymerization Initiators 2025-09-17 · p. 4
Biomaterials Research Reagents 2025-02-19 · p. 25

Related TCI products

Photopolymer Development: This initiator is ideal for creating light-sensitive polymers used in 3D printing and coating technologies due to its efficient UV activation.
Optical Material Research: It is widely used in studies involving photochromic dyes and optically responsive materials, enabling controlled light-induced chemical changes.
Composite Fabrication: The compound helps in the formation of light-activated composites, enhancing the mechanical and optical properties of the final product.
Industrial Coating Applications: It is suitable for industrial applications where UV-curable coatings are required, offering fast curing and durability.
Educational Research: It is commonly used in academic settings to teach and demonstrate the principles of photopolymerization and light-activated chemical reactions.

Brand	TCI
CAS number	7189-82-4
Molecular formula	—
Purity	—
Category	Materials Science > Photonic Materials and Optical Materials > Photochromic Dyes
Pack sizes	Available in standard laboratory quantities as per supplier specifications
Physical form	Solid powder
Storage	Store in a cool, dark place away from direct sunlight and moisture

This material should be stored in a cool, dry environment, away from direct sunlight and moisture to maintain its chemical stability. It is recommended to use airtight containers to prevent exposure to air and humidity, which could affect its performance. Laboratory personnel should handle the material with care, using appropriate personal protective equipment such as gloves and safety goggles. It is important to ensure that the storage area is well-ventilated and free from sources of heat or ignition. Proper labeling of containers is essential to ensure safe handling and prevent accidental exposure. Always follow standard laboratory safety protocols when working with photopolymerization initiators to minimize risks and ensure a safe working environment.

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