2,2'-Bis(trifluoromethyl)benzidine (TFMB/TFDB) CAS 341-58-2

Name: 2,2'-Bis(trifluoromethyl)benzidine (TFMB/TFDB) CAS 341-58-2
Brand: Aure Chemical
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Synonyms: 2,2'-Bis(trifluoromethyl)- [1,1'-biphenyl]-4,4'-diamine; 4,4'-Diamino-2,2'-bis(trifluoromethyl)biphenyl; 2,2′-Bis(trifluoromethyl)-4,4′-diaminobiphenyl

Shandong Aure Chemical Co., Ltd. is one of the leading suppliers of TFMB/TFDB in China and also one of the suppliers of this product.

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Product Details

TFMB / TFDB CAS 341-58-2 for Polyimide Synthesis

TFDB, also known as TFMB or 2,2'-Bis(trifluoromethyl)benzidine, is a fluorinated aromatic diamine monomer used as a structural building block in high-performance polyimide synthesis. Its rigid aromatic backbone and electron-withdrawing trifluoromethyl groups make TFMB an important member of the broader polyimide diamine monomers category for advanced polymer and electronic material systems.

In polyimide material design, TFMB / TFDB is frequently considered for transparent, low-dielectric and thermally stable polymer systems. Its fluorinated structure is also relevant to fluorinated polyimide diamine applications, where monomer selection may influence optical clarity, dielectric behavior, moisture uptake and processing performance depending on the paired dianhydride and formulation.

Basic Information of TFMB / TFDB

Product Name	2,2'-Bis(trifluoromethyl)benzidine
Abbreviation	TFMB, TFDB
CAS Number	341-58-2
Product Type	Fluorinated aromatic diamine monomer
Molecular Formula	C14H10F6N2
Molecular Weight	320.23 g/mol
Appearance	White powder
Purity	≥ 99.9%
Metal Testing	Single metal ≤ 1 ppb
Main Application	Transparent, low-dielectric and high-performance polyimide synthesis
Package	1 kg/bottle, 20 kg/drum, or customized packaging
Documents	COA, SDS and TDS available upon request
Molecular Structure

Typical Specification of TFMB / TFDB

Item	Standard	Available Batch Result
Appearance	White powder	White powder
Purity (HPLC)	≥ 99.9%	99.97%
Loss on Drying	≤ 0.1%	0.09%
Metal Testing	Single metal ≤ 1 ppb	Approved
Storage Conditions	Sealed container; keep dry; store in a cool and dark place	Based on available COA reference

The above data is based on an available batch COA for TFMB / TFDB CAS 341-58-2. Final specifications, batch data and documentation should be confirmed by the latest COA before order confirmation.

Key Features in Polyimide Design

Fluorinated aromatic diamine structure, relevant to fluorinated polyimide diamine applications.
Bulky trifluoromethyl groups may help reduce intermolecular charge-transfer interactions and support optical clarity depending on the paired dianhydride and polymer design.
Low-polarizability fluorinated groups are often considered in semiconductor and electronic polyimide applications.
Rigid aromatic structure may support thermal stability in high-temperature polyimide applications.
High-purity and low-metal-control requirements may be important for advanced polyimide materials used in electronic, optical and specialty polymer systems.

Pairing TFMB with Dianhydride Monomers

In polyimide synthesis, TFMB / TFDB is commonly evaluated together with selected polyimide dianhydride monomers. Fluorinated dianhydrides such as 6FDA CAS 1107-00-2 are often considered when transparent, low-dielectric or low-moisture-uptake PI systems are required.

Rigid aromatic dianhydrides such as BPDA or BTDA may be considered for high-temperature and dimensionally stable polyimide designs, while ether-containing dianhydrides such as ODPA may support processability and film-forming behavior. Final material performance depends on the complete monomer pair, formulation, purity level and processing conditions.

Application Context of TFMB in Polyimide Systems

TFMB is commonly referenced in material development involving transparent, low-dielectric and high-performance polyimides. Its role is typically that of a structural monomer rather than a finished application material, and final material performance depends on the paired dianhydride, formulation, processing and imidization conditions.

Fluorinated polyimide diamine applications – monomer selection for fluorinated PI systems.
Transparent polyimide material applications – optical clarity and reduced coloration in PI design.
Semiconductor and electronic polyimide applications – low-dielectric and insulation-related material requirements.
High-temperature polyimide applications – thermal stability and high-performance polymer environments.

COA, SDS and Technical Documentation

Aure Chemical can provide COA, SDS, TDS, typical specifications and packaging information for TFMB / TFDB CAS 341-58-2 upon request. Available batch COA shows 99.97% purity by HPLC, loss on drying of 0.09%, and approved single-metal testing under the listed standard.

Please share the required purity, metal ion control requirement, target specification, quantity, destination country or port, and preferred packaging method so we can review availability, documentation support and export packing options.

Contact Aure Chemical for TFMB documentation and quotation support.

Packaging, Logistics & Compliance Capabilities

Aure Chemical provides flexible packaging solutions, compliant logistics arrangements, and controlled storage practices to support laboratory-scale, pilot-scale, and commercial-scale global supply.