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

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

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 manufacturers of this product.

We can provide customized requirements in terms of product purity, packaging specifications, and other aspects.

Please contact us to obtain the latest product information.

Product Details

Discover Aure Chemical's High-Quality TFMB

TFDB (2,2'-Bis(trifluoromethyl)benzidine), also known as TFMB, is a fluorinated diamine monomer valued for its rigidity, aromatic structure, and electron-withdrawing trifluoromethyl groups. These properties enable the synthesis of advanced polymers and frameworks with enhanced thermal stability, transparency, UV resistance, and low thermal expansion.  Widely used in high-performance polyimide synthesis for aerospace, electronics, and optoelectronic materials.


Basic Information of TFMB

Product Name2,2'-Bis(trifluoromethyl)benzidine
AbbreviationTFDB, TFMB
CAS Number341-58-2
Molecular FormulaC14H10F6N2
Molecular Weight320.23 g/mol
AppearanceSnow white powder
Purity≥ 99.9% 
Metal Ion1ppm Max.for one single metal ions
Package1kg/bottle, 20kg/drum, or customized
Molecular formulaTFMB Molecular Structure

Key Properties

  • High thermal stability

  • Low dielectric constant

  • Excellent optical transparency

  • Good chemical resistance

  • Compatible with various dianhydrides for polyimide synthesis


Key applications of TFDB

    • High-Performance Polymers and Polyimides: Used as a monomer for synthesizing colorless, transparent polyimides with low coefficients of thermal expansion (CTE, e.g., 4.2 ppm/K) and high thermal stability (Td5% >500°C), ideal for aerospace composites, flexible electronics, and high-temperature adhesives.

    • Optoelectronics and Displays: Incorporated into transparent polyimide films for flexible OLED displays, optical waveguides, and photonics, leveraging its UV resistance and low light absorption due to reduced π-π interactions.

    • Gas Separation Membranes: Utilized in polyimides (e.g., 6FDA-TFMB) for membranes with high gas permeability (e.g., CO₂/CH₄ selectivity up to 188.43) and microporosity, suitable for industrial gas purification and CO₂ capture.

    • Electronics and Microelectronics: Employed in low-dielectric-constant materials for insulating layers in microchips, printed circuit boards, and flexible electronics, enhancing signal transmission and thermal stability.

    • Advanced Materials: Applied in covalent organic frameworks (COFs), metal-organic frameworks (MOFs) for catalysis and gas storage, and specialty coatings for aerospace and industrial applications requiring durability and chemical resistance.


Detailed COA / TDS / MSDS are available upon request. Please Contact Us for more information.


Packaging, Transportation & Storage

Aure Chemical ensures that all products are handled in compliance with international safety and quality standards. Each product’s SDS should be consulted for detailed requirements.

Packaging

We use certified UN-rated containers suitable for each chemical type — including steel drums, HDPE drums, IBCs, and ISO tank containers for bulk liquids. All packages are tested for integrity and labeled per IMDG / IATA / ADR standards.

Transportation

Shipments comply with IMDG, IATA, and ADR codes to ensure safe and lawful movement by sea, air, or land. Accompanying documents include SDS, Dangerous Goods Declarations, and COAs.

Storage

Products should be stored in well-ventilated, dry areas, away from heat and incompatible substances. Follow ISO 9001 / 14001 principles for safety, labeling, and periodic inspection.

For detailed handling or customized packaging inquiries, please    contact us.


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