2,2'-Bis(trifluoromethyl)-4,4'-diaminobiphenyl
Basic Information
Name: 2,2'-Bis(trifluoromethyl)-4,4'-diaminobiphenyl
Other names: 4,4'-Diamino-2,2'-bis(trifluoromethyl)biphenyl; TFMB; TFDB
Molecular formula: C14H10F6N2
Molecular weight: 320.23
CAS number: 341-58-2
2.Physical and Chemical Properties
- Appearance: White to off-white crystalline powder
- Melting point: Approximately 180–183 °C
- Solubility: Slightly soluble in water; soluble in acetone, DMF, DMSO, NMP and other polar organic solvents
- Stability: Stable; the trifluoromethyl groups impart low dielectric constant, high transparency and thermal stability
3.Main Functions and Applications (What are its uses?)
- Polyimide monomer (core application): A fluorinated diamine monomer for fluorinated polyimides, imparting high- temperature resistance, low dielectric constant, low water absorption, high transparency and good processability; widely used in microelectronics, flexible displays and 5G high-frequency materials.
- Microelectronics / semiconductor: Low-dielectric-constant materials, flexible printed circuit (FPC) substrates and photosensitive polyimide (PSPI).
- Flexible display: Monomer for colorless/transparent polyimide (CPI) cover films and substrates.
- 5G communication: Low dielectric-loss high-frequency materials.
- High-performance polymers: Monomer for polyamides, polyamide-imides, polybenzoxazoles and other specialty polymers.
4.A Benchmark-Level Industrial Masterpiece - A Meticulously Crafted "Electronic-Grade" Fluorinated Diamine!
Purity ≥ 99.0% (electronic grade). Low moisture, ash and heavy metals.
Trifluoromethyl groups deliver low dielectric and high transparency.
"What you see is what you get" - every lot ships with a complete certificate of analysis.
Chromatography Analysis - 2,2'-Bis(trifluoromethyl)-4,4'-diaminobiphenyl
Signal: VWD1 A, Wavelength=254 nm (C18 column, 4.6 mm × 250 mm × 5 μm; acetonitrile-water gradient)
|
Retention Time (min) |
Type |
Peak Width (min) |
Peak Area |
Peak Height |
Area% |
|
4.206 |
BB |
0.102 |
3.0 |
0.4 |
0.02 |
|
6.504 |
BB |
0.124 |
7.6 |
0.9 |
0.05 |
|
8.316 |
BB |
0.142 |
16.6 |
1.9 |
0.11 |
|
9.824 |
BB |
0.162 |
15000.0 |
1850.4 |
99.20 |
|
11.606 |
BB |
0.156 |
27.2 |
3.1 |
0.18 |
|
13.416 |
BB |
0.170 |
24.2 |
2.8 |
0.16 |
|
15.204 |
BB |
0.182 |
19.7 |
2.3 |
0.13 |
|
17.012 |
BB |
0.194 |
13.6 |
1.6 |
0.09 |
|
18.608 |
BB |
0.204 |
9.1 |
1.1 |
0.06 |
- Determination method: Karl Fischer titration (standard: ≤ 0.10%) Moisture content 0.032%
- Test method: Ash content by ignition method (specification limit: ≤ 0.05%)
- Ash content 0.006%
- Test method: Capillary melting point method (quality standard: 180–183 °C) Melting point 181.6 °C
Product Specification - 2,2'-Bis(trifluoromethyl)-4,4'-diaminobiphenyl
|
Item |
Specification |
|
Product model |
2,2'-Bis(trifluoromethyl)-4,4'-diaminobiphenyl (TFMB) |
|
Appearance |
White to off-white crystalline powder |
|
Purity (HPLC, %) |
≥ 99.0 |
|
Melting point (°C) |
180 – 183 |
|
Water content (%, K.F.) |
≤ 0.10 |
|
Ash content (%) |
≤ 0.05 |
|
Heavy metals (ppm) |
≤ 10 |
|
Packaging |
25 kg fiber drum with PE inner / 1 kg aluminum foil bag |
Test methods reference: purity by HPLC (area normalization); water by Karl Fischer titration (GB/T 6283); melting range by capillary method (GB/T 617); ash by ignition method (GB/T 7531); heavy metals by colorimetric method.
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