2,2'-Bis(trifluoromethyl)benzidine Chemische Eigenschaften,Einsatz,Produktion Methoden
R-Sätze Betriebsanweisung:
R22:Gesundheitsschädlich beim Verschlucken.
R45:Kann Krebs erzeugen.
R50/53:Sehr giftig für Wasserorganismen, kann in Gewässern längerfristig schädliche Wirkungen haben.
S-Sätze Betriebsanweisung:
S22:Staub nicht einatmen.
S36/37/39:Bei der Arbeit geeignete Schutzkleidung,Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.
S45:Bei Unfall oder Unwohlsein sofort Arzt zuziehen (wenn möglich, dieses Etikett vorzeigen).
Verwenden
2,2'-Bis(trifluoromethyl)benzidine is used for producing a high strength flexible transparent polyimide material.
Synthese
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.
2,2'-Bis(trifluoromethyl)benzidine Upstream-Materialien And Downstream Produkte
Upstream-Materialien
1,1'-Biphenyl, 4,4'-dinitro-2,2'-bis(trifluoromethyl)
Hydrazine, 1,2-bis[3-(trifluoromethyl)phenyl]-
[1,1'-Biphenyl]-2,4'-diamine, 2',4-bis(trifluoromethyl)-
Diazene, bis[3-(trifluoromethyl)phenyl]- (9CI)
2-(Trifluoromethyl)-1-iodo-4-nitrobenzene
4-Nitro-α,α,α-trifluor-o-toluidin
4-NITRO-2-(TRIFLUOROMETHYL)ACETANILIDE
N-[2-(trifluormethyl)phenyl]acetamid
1-Nitro-3-(trifluormethyl)benzol
Downstream Produkte