2,2'-Bis(trifluoromethyl)benzidine
- Product Name
- 2,2'-Bis(trifluoromethyl)benzidine
- CAS No.
- 341-58-2
- Chemical Name
- 2,2'-Bis(trifluoromethyl)benzidine
- Synonyms
- TFMB;TFDB;ABL-21;22TFMB;TFDB(TFMB);TFMB/ TFDB;2,2'-Bis(trifluorome;2,2'-Bis(trifluoromethyl;2,2'-bis(trifluoromethyl);2,2'-DI(TRIFLUOROMETHYL)BENZIDINE
- CBNumber
- CB2120988
- Molecular Formula
- C14H10F6N2
- Formula Weight
- 320.23
- MOL File
- 341-58-2.mol
2,2'-Bis(trifluoromethyl)benzidine Property
- Melting point:
- 183 °C
- Boiling point:
- 376.9±42.0 °C(Predicted)
- Density
- 1.415±0.06 g/cm3(Predicted)
- storage temp.
- 2-8°C(protect from light)
- solubility
- soluble in Methanol
- form
- powder to crystal
- pka
- 3.23±0.10(Predicted)
- color
- White to Light yellow to Light orange
- InChI
- InChI=1S/C14H10F6N2/c15-13(16,17)11-5-7(21)1-3-9(11)10-4-2-8(22)6-12(10)14(18,19)20/h1-6H,21-22H2
- InChIKey
- NVKGJHAQGWCWDI-UHFFFAOYSA-N
- SMILES
- C1(C2=CC=C(N)C=C2C(F)(F)F)=CC=C(N)C=C1C(F)(F)F
- CAS DataBase Reference
- 341-58-2(CAS DataBase Reference)
Safety
- Hazard Codes
- T,Xi
- Risk Statements
- 22-45-50/53-36-25-36/37/38
- Safety Statements
- 22-36/37/39-45-26-37
- RIDADR
- 2811
- Hazard Note
- Toxic
- HazardClass
- IRRITANT-HARMFUL
- HS Code
- 29215900
Hazard and Precautionary Statements (GHS)
- Symbol(GHS)
-
- Signal word
- Warning
- Precautionary statements
-
P261Avoid breathing dust/fume/gas/mist/vapours/spray.
P264Wash hands thoroughly after handling.
P264Wash skin thouroughly after handling.
P270Do not eat, drink or smoke when using this product.
P271Use only outdoors or in a well-ventilated area.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P501Dispose of contents/container to..…
N-Bromosuccinimide Price
- Product number
- B1711
- Product name
- 2,2'-Bis(trifluoromethyl)benzidine
- Purity
- >98.0%(GC)(T)
- Packaging
- 1g
- Price
- $41
- Updated
- 2025/07/31
- Product number
- B1711
- Product name
- 2,2'-Bis(trifluoromethyl)benzidine
- Purity
- >98.0%(GC)(T)
- Packaging
- 5g
- Price
- $151
- Updated
- 2025/07/31
- Product number
- B1711
- Product name
- 2,2'-Bis(trifluoromethyl)benzidine
- Purity
- >98.0%(GC)(T)
- Packaging
- 25g
- Price
- $454
- Updated
- 2025/07/31
- Product number
- 009043
- Product name
- 2,2'-Bis(trifluoromethyl)benzidine
- Packaging
- 250mg
- Price
- $9
- Updated
- 2021/12/16
- Product number
- 3830-3-22
- Product name
- 2,2'-Bis(trifluoromethyl)benzidine
- Purity
- 97%
- Packaging
- 2g
- Price
- $10
- Updated
- 2021/12/16
2,2'-Bis(trifluoromethyl)benzidine Chemical Properties,Usage,Production
Description
2,2'-Bis(trifluoromethyl)benzidine (TFMB) is a fluorinated benzidine derivative with two trifluoromethyl substituents at the 2- and 2'-positions. 2,2'-Bis(trifluoromethyl)benzidine (TFMB) is a rigid and aromatic polyimide used in the synthesis of metal-organic frameworks (MOFs) and covalent organic frameworks (COFs) of high specific surface area.TFMB is also synthesised as UV-resistant and colourless polyimide thin films for optoelectronic applications. TFMB is also used to synthesise UV resistant and colourless polyimide films for optoelectronic applications. The two fluoromethyl groups have a strong electron-withdrawal effect, which reduces the electron dispersion in the π-orbitals of the fully conjugated polymer backbone. This effect results in a much higher transparency of the polyimide film compared to polyimide films containing methyl substituents. This polyimide can be used for the encapsulation of solar cells with MOFs cluster light diffusers.
Chemical Properties
2,2'-Bis(trifluoromethyl)benzidine is rigid and aromatic, the two fluoromethyl groups have strong electron withdrawing effect, reducing the electron delocalization of the π orbital on the fully conjugated polymer backbone.
Uses
2,2'-Bis(trifluoromethyl)benzidine is used for producing a high strength flexible transparent polyimide material.
Hazard
2,2'-Bis(trifluoromethyl)benzidine is harmful if swallowed, in contact with skin or if inhaled.
Synthesis
This 2,2′-bis(trifluoromethyl)-4,4′-dinitrobiphenyl crystal of 42.5 g, toluene of 127.5 g and 5% Pd/C (AER-TYPE: 50% water contained product) of 1.8 g manufactured by N.E. CHEMCAT Corp. were fed in an autoclave made of stainless steel, after the system was replaced sufficiently with hydrogen, pressured with hydrogen for a reaction pressure to be 1 MPa and reaction was carried out at a reaction temperate of 60 °C for 6 hours. After reaction, catalyst was filtered away, toluene in this reaction liquid was distilled away under reduced pressure, concentrated and crystallized, 2,2′-bis(trifluoromethyl)-4,4′-diaminobiphenyl of 28.5 g (purity converted) was obtained by solid-liquid separation.
References
[1] Patent: CN105541637, 2016, A. Location in patent: Paragraph 0017; 0018
[2] Journal of the Chemical Society, 1951, p. 3459,3463
[3] Journal of the Chemical Society, 1954, p. 1071,1074
[4] Patent: EP2100874, 2009, A1. Location in patent: Page/Page column 7
2,2'-Bis(trifluoromethyl)benzidine Preparation Products And Raw materials
Raw materials
Preparation Products
2,2'-Bis(trifluoromethyl)benzidine Suppliers
- Tel
- 800-4238616
- Fax
- +1-888-520-1075 / +1-503-283-1987
- sales@tciamerica.com
- Country
- Americas
- ProdList
- 23653
- Advantage
- 75
View Lastest Price from 2,2'-Bis(trifluoromethyl)benzidine manufacturers
- Product
- 2,2'-Bis(trifluoromethyl)benzidine 341-58-2
- Price
- US $0.00-0.00/KG
- Min. Order
- 1KG
- Purity
- 98
- Supply Ability
- 10000KGS
- Release date
- 2025-11-12
- Product
- 2,2'-bis(trifluoromethyl)benzidine (TFDB/TFMB) 341-58-2
- Price
- US $0.00/kg
- Min. Order
- 1kg
- Purity
- ≥99.9%HPLC
- Supply Ability
- 200MT
- Release date
- 2025-10-24
- Product
- 2,2'-Bis(trifluoromethyl)benzidine 341-58-2
- Price
- US $0.00/KG
- Min. Order
- 1KG
- Purity
- 98%min
- Supply Ability
- 30tons/month
- Release date
- 2023-02-24