ChemicalBook >?? ???? >4,4'-???????

4,4'-???????

4,4'-??????? ??? ???

?? ??:: 579-39-5

???:: 4,4'-???????

???(??):: 4,4'-???????

???:: 4,4'-DIFLUOROBENZIL

???(??):: 4,4'-FLUOROBENZIL;p,p'-Difluorobenzil;4,4'-DIFLUOROBENZIL;4,4'- difluorobenzoyl;4,4'-DIFLUOROBIBENZOYL;4,4'-Difluorobenzil>4,4'-Difluorodibenzoyl;4,4'-Difluorobenzil,99%;4,4'-Difluorobenzil, 98+%;BIS(P-FLUOROPHENYL)ETHANEDIONE

CBNumber:: CB6112871

???:: C14H8F2O2

??? ??:: 246.21

MOL ??:: 579-39-5.mol

?? ?? 138

4,4'-??????? ??

???: 120-122 °C (lit.)

?? ?: 370.2±27.0 °C(Predicted)

??: 1.3163 (estimate)

?? ??: Sealed in dry,Room Temperature

??? ??: powder to crystal

??: Light orange to Yellow to Green

???: ?? ?????.

BRN: 1971736

CAS ??????: 579-39-5(CAS DataBase Reference)

EPA: Ethanedione, bis(4-fluorophenyl)- (579-39-5)

?? ? ?? ??
?? ? ???? ?? (GHS)

??? ??	Xi
?? ???? ??	36/37/38
?????	26-37/39
WGK ??	3
?? ?? ??	Irritant
TSCA	T
HS ??	29147000

????(GHS):

?? ?:

Warning

??·?? ??:

??	??·?? ??	?? ??	??	?? ?	P- ??
H315	??? ??? ???	????? ?? ?????	?? 2	??	P264, P280, P302+P352, P321,P332+P313, P362
H319	?? ?? ??? ???	?? ? ?? ?? ??? ??	?? 2A	??	P264, P280, P305+P351+P338,P337+P313P
H335	?? ???? ??? ? ??	?? ???? ?? - 1? ??;???? ??	?? 3	??

??????:

P261	??·?·??·???·??·...·????? ??? ????.
P264	?? ??? ?? ??? ????.
P264	?? ??? ?? ??? ????.
P280	????/???/???/?????? ?????.
P304+P340	???? ??? ??? ?? ??? ??? ???? ?? ??? ??? ????.
P305+P351+P338	?? ??? ? ?? ?? ???? ????. ???? ?????? ?????. ?? ????.
P405	???? ?????.

NFPA 704

	1
2		0

4,4'-??????? C??? ??, ??, ??

??? ??

pale yellow powder

??

4,4′-Difluorobenzil is suitable for use in the preparation of 2,3-bis(4-fluorophenyl)thieno[3,4-b]pyrazine. It may be used in the synthesis of following:

poly(ether-α-diketone)s, via nucleophilic substitution reaction with bisphenol A
4,4′-difluoro-2,3-diphenylpyrazine (DPPF) and 4,4′-difluoro-5-methyl 2,3-diphenylpyrazine (MDPPF), via direct condensation with ethylenediamine and 1,2-diaminopropane, respectively
2,3-bis(4-fluorophenyl)quinoxaline, via direct condensation with 1,2-phenylenediamine

?? ??

4,4′-Difluorobenzil is a benzil derivative. Its reaction with benzylurea and phenethylurea has been investigated. It is reported to undergo condensation with Fe₂(SH)₂(CO)₆to afford the adduct Fe₂[S₂C₂(OH)₂(C₆H₄-4-F)₂](CO)₆.

4,4'-??????? ?? ?? ? ???

???

Benzene, 1,1'-ethenylidenebis[4-fluoro- 1,2-BIS-(4-??????)???

?? ??

2,3-Bis(4-Fluorophenyl)Quinoxaline-6-Carboxylic Acid

4,4'-??????? ?? ??

???( 138)?? ??

???	??	???	??	?? ?	??
career henan chemical co	+86-0371-86658258 +8613203830695	factory@coreychem.com	China	29808	58
Changzhou Guiding Bio-Tech. Co.,Ltd.	+86-519-519-86686860 +8618795626222	ning@guiding-bio.com	China	299	58
Hebei Fengjia New Material Co., Ltd	+86-0311-87836622 +86-18712993135	sales01@tairunfaz.com	China	8051	58
Capot Chemical Co.,Ltd.	+86-（0）57185586718 +86-13336195806	sales@capot.com	China	29730	60
ATK CHEMICAL COMPANY LIMITED	+undefined-21-51877795	ivan@atkchemical.com	China	33024	60
Shenzhen Nexconn Pharmatechs Ltd	+86-755-89396905 +86-15013857715	admin@nexconn.com	China	10406	58
Alchem Pharmtech,Inc.	8485655694	sales@alchempharmtech.com	United States	63687	58
CONIER CHEM AND PHARMA LIMITED	+8618523575427	sales@conier.com	China	49732	58
Fuxin Pharmaceutical	+86-021-021-50872116 +8613122107989	contact@fuxinpharm.com	China	10035	58
Kindchem(Nanjing)Co.,Ltd	+86-025-025-85281586 +8618651653755	sales@kindchem.cn	China	1226	58

4,4'-??????? ?? ??:

??? ?? 4,4'-DICHLOROBENZOIN 1,2-bis(4-hydroxyphenyl)ethan-1-one ANISOIN 4,4'-Dihydroxybenzil 4,4'-DIFLUOROBENZOIN 4,4'-Dichlorobenzil Furil DESOXYANISOIN 4-Hydroxy-4'-fluorobiphenyl 4,4'-DIFLUOROBENZIL (4-FLUORO-PHENYL)-OXO-ACETALDEHYDE 1-(4-Fluorophenyl)-2-phenyl-ethanone 4'-Fluoropropiophenone 2-(4-FLUOROPHENYL)ACETOPHENONE 1,2-BIS-(4-FLUOROPHENYL)ETHANONE 1,2-BIS(4-FLUOROPHENYL)ETHANE

成人免费xx,国产又黄又湿又刺激不卡网站,成人性视频app菠萝网站,色天天天天

4,4'-???????

4,4'-??????? ??

4,4'-??????? C??? ??, ??, ??

??? ??

??

?? ??

4,4'-??????? ?? ?? ? ???

???

?? ??

4,4'-??????? ?? ??

4,4'-??????? ?? ??: