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HomeProduct name listBENZOYL LEUCO METHYLENE BLUE

BENZOYL LEUCO METHYLENE BLUE

  • CAS NO.:1249-97-4
  • Empirical Formula: C23H23N3OS
  • Molecular Weight: 389.51
  • MDL number: MFCD00059153
  • EINECS: 215-005-5
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2024-05-30 16:33:02
BENZOYL LEUCO METHYLENE BLUE Structural

What is BENZOYL LEUCO METHYLENE BLUE?

The Uses of BENZOYL LEUCO METHYLENE BLUE

10-Benzoylleucomethylene Blue was used as a color-forming agent in colorless copying paper. It is also recommended for documents to make them safe against forgery.

Preparation

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.

Mechanism of action

The mechanism of color-forming decomposition of N-benzoylleucomethylene blue during the copying process has been studied; the reaction is induced by photons and proceeds via free radicals.

Properties of BENZOYL LEUCO METHYLENE BLUE

Melting point: 198°C
Boiling point: 589.3±50.0 °C(Predicted)
Density  1.258±0.06 g/cm3(Predicted)
solubility  very faint turbidity in hot Toluene
form  powder to crystal
pka 5.80±0.20(Predicted)
color  White to Light yellow to Green
EPA Substance Registry System 10H-Phenothiazine-3,7-diamine, 10-benzoyl-N,N,N',N'-tetramethyl- (1249-97-4)

Safety information for BENZOYL LEUCO METHYLENE BLUE

Signal word Warning
Pictogram(s)
ghs
Exclamation Mark
Irritant
GHS07
GHS Hazard Statements H302:Acute toxicity,oral
H315:Skin corrosion/irritation
H319:Serious eye damage/eye irritation
H335:Specific target organ toxicity, single exposure;Respiratory tract irritation
Precautionary Statement Codes P261:Avoid breathing dust/fume/gas/mist/vapours/spray.
P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

Computed Descriptors for BENZOYL LEUCO METHYLENE BLUE

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