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1249-97-4
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???(??):
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BENZOYL LEUCO METHYLENE BLUE
???(??):
BLMB;ai3-17179;Methylene blue leucobenzoy;BENZOYL LEUCO METHYLENE BLUE;Benzoyl Leuco Methylene Blue >Benzoyl Leuco Methylene Blue(BLMB);Benzoyl Leuco Methylene Blue, ≥ 95.0%;10-benzoyl-3,7-bis(dimethylamino)phenothiazine;10-benzoyl-3,7-bis(dimethylamino)-phenothiazin;3,7-bis(Dimethylamino)-10-benzoylphenothiazine
CBNumber:
CB4198101
???:
C23H23N3OS
??? ??:
389.51
MOL ??:
1249-97-4.mol

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198°C
?? ?
589.3±50.0 °C(Predicted)
??
1.258±0.06 g/cm3(Predicted)
???
very faint turbidity in hot Toluene
??? ??
powder to crystal
?? ?? (pKa)
5.80±0.20(Predicted)
??
White to Light yellow to Green
EPA
10H-Phenothiazine-3,7-diamine, 10-benzoyl-N,N,N',N'-tetramethyl- (1249-97-4)
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  • ?? ? ?? ??
  • ?? ? ???? ?? (GHS)
RTECS ?? SN5449000
HS ?? 29349990
?? mouse,LD,intraperitoneal,> 500mg/kg (500mg/kg),"Summary Tables of Biological Tests," National Research Council Chemical-Biological Coordination Center. Vol. 4, Pg. 47, 1952.
???? ?? KE-03044
????(GHS): GHS hazard pictograms
?? ?: Warning
??·?? ??:
?? ??·?? ?? ?? ?? ?? ?? ? ?? ?? P- ??
H302 ??? ??? ?? ?? ?? - ?? ?? 4 ?? GHS hazard pictograms P264, P270, P301+P312, P330, P501
H315 ??? ??? ??? ????? ?? ????? ?? 2 ?? GHS hazard pictograms P264, P280, P302+P352, P321,P332+P313, P362
H319 ?? ?? ??? ??? ?? ? ?? ?? ??? ?? ?? 2A ?? GHS hazard pictograms P264, P280, P305+P351+P338,P337+P313P
H335 ?? ???? ??? ? ?? ?? ???? ?? - 1? ??;???? ?? ?? 3 ?? GHS hazard pictograms
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P261 ??·?·??·???·??·...·????? ??? ????.
P305+P351+P338 ?? ??? ? ?? ?? ???? ????. ???? ?????? ?????. ?? ????.
NFPA 704
0
2 0

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10-Benzoylleucomethylene Blue[1249-97-4] is obtained by reduction of Methylene Blue with hydrosulfite in aqueous alkaline medium, followed by benzoylation and then extraction of the crude product with toluene.

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