KSIĄŻKI POWIĄZANE ZE SŁOWEM «TRIPHENYLMETHANE»
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1
Photophysical and Photochemical Properties of Aromatic Compounds
TABLE 1 Characteristics of the Electronic Transitions in Phenylmethanes (
Ethanol, 77K) Molecule f kjk„ W*ct <t,n *r* bvJbn Toluene 2.3 3.39 0.89 0.24 0.36
1.50 Diphenylmethane 5.2 4.60 2.33 0.18 0.53 2.94 Triphenylmethane 7.2 8.73
2.20 ...
These dyes are derived from triphenylmethane or its homologues. On oxidation
this hydrocarbon yields triphenylmethanol, and the dyes are salts of amino or
hydroxy derivatives of compounds of this type. Only di-and tri-substituted
derivatives ...
Hot iron tube + H2 Fluorene (v) Triphenylmethane (Tritane) : Triphenylmethane
may be prepared by either of the following two methods. (i) By Friedel-Crafts
reaction : In this reaction benzene may be condensed either with chloroform or
benzal ...
4
Solvents and Solvent Effects in Organic Chemistry
Table 2-11 summarizes some of the available data concerning the comparative
efficiencies of various solvents in promoting the ionization of chloro-
triphenylmethane [150]. The KIon of chloro-triphenylmethane varies in different
solvents by at ...
Christian Reichardt, Thomas Welton, 2011
5
Organic Chemistry: Aromatic, Alcohols Aldehydes & Acids
Triphenylmethane, m.p. 93°C, is the parent substance of the tri- phenylmethane
dyes. When brominated, it forms tripheylmethyl bromide, (C6H5 ),CBr (cf.
diphenylmethane), and may be oxidised directly to triphenylcarbinol.
Triphenylmethane ...
6
Synthetic Organic Chemistry: (For Honours & Post-Graduate ...
Structure of Triphenylmethane Dyes Taking the Example of Pararosaniline^ (i)
Since the colour of triphenyl- methane dyes e.g. pararosaniline. and rosaniline, is
generally, in their salt form, they are first converted into pararosaniline proper or ...
7
Fisher's Contact Dermatitis
Triphenylmethane dyes such as gentian violet, crystal violet, methyl violet,
rosaniline, malachite green, brilliant green, chrysoidine, and eosin are weak
sensitizers. Sensitization to these dyes occurs especially when they are applied
to statis ...
Robert L. Rietschel, Alexander A. Fisher, Joseph F. Fowler, 2008
8
Base-Catalyzed Reactions of Hydrocarbons and Related Compounds
Table 13.9 Concentration Base (mole) 1nitial rate" KOH Saturated 0.06 solution t-
BuOLi 0.10 0.15 l-BuONa 0.10 0.32 t-BuOK 0.10 0.82 I-BUON(CH3)4 I.I0 t-BuOK
0.20 1.10 CH30Na 0.20 0.18 " 0.1 M triphenylmethane in the presence of ...
9
Inhibition and Destruction of the Microbial Cell
W Hugo. which is commonly found in skin secretions is inhibitory to the growth of
staphylococci and streptococci. C. DYES 1. Triphenylmethane Dyes
Triphenylmethane dyes have been widely used for the topical treatment of coccal
infections.
10
The Chemistry of Dyestuffs: A Manual for Students of ...
Colour and General Properties of Triphenylmethane Dyestuffs. — The
unsubstituted tri-amido compounds are red, substitution in the benzene ring
having little effect upon shade. Substitution in the amido group causes a
deepening of colour, ...
WIADOMOŚCI, KTÓRE ZAWIERAJĄ SŁOWO «TRIPHENYLMETHANE»
Sprawdź, o czym dyskutuje się w prasie krajowej i zagranicznej oraz jak jest stosowane słowo
triphenylmethane w wiadomościach.
New Skin Testing Protocol Helps Locate Isosulfan Blue Allergy
Isosulfan blue is a triphenylmethane dye utilized as an injection in sentinel lymph node biopsy procedures during breast cancer and melanoma surgeries. «HCPLive, Sie 14»
Analysis of Pesticides in Baby Foods Using Triple Quad GC/MS/MS
Triphenylmethane was used as the internal standard and was held constant at 10 ng/mL; triphenyl phosphate was used as a surrogate standard at 20 ng/mL in ... «Food Safety Magazine, Cze 14»
Microgel sensors: Nerve gas responders
The incorporation of triphenylmethane leucohydroxide (TPL) into the microgels endows the gel with the ability to respond to a variety of stimuli. Indeed, the TPL ... «spectroscopyNOW.com, Kwi 14»
Optical components made of multiresponsive microgels
The researchers thus also incorporated triphenylmethane leucohydroxide (TPL) into their microgels. This substance is a true jack-of-all-trades that makes the ... «Phys.Org, Mar 14»
Some imported farmed seafood is a toxic cocktail
The CFIA has also found scores of chemicals “not accepted to be used” in seafood from abroad, including triphenylmethane dyes in products from Bangladesh, ... «Straight.com, Kwi 13»
This Day in Black History: April 10, 1887
Chandler researched triphenylmethane dyes as consulting chemist in Lake County, Illinois. The cause of his death is still unknown. BET National News - Keep ... «BET, Kwi 13»
Researchers warn of health risks of dyes used in face products
The triphenylmethane dyes have a wide range of applications in industries and consumer products either alone or in combination with other dyes, to produce ... «CosmeticsDesign-Europe.com, Sty 13»
Fading dyes: Crystal violet degradation under UV light
However, they came at a high price in the arts arena, because triphenylmethane dyes were subsequently found to be highly light sensitive. Fading and ... «spectroscopyNOW.com, Sty 13»
Blue lollipops allegedly present health risks
Marianna Lucová, et al., “Absorption of triphenylmethane dyes Brilliant Blue and Patent Blue through intact skin, shaven skin and lingual mucosa from daily life ... «Lexology, Sty 13»
Blue colors in lollipops present health risk to kids, say researchers
'Absorption of triphenylmethane dyes Brilliant Blue and Patent Blue through intact skin, shaven skin and lingual mucosa from daily life products' Authors: ... «ConfectioneryNews.com, Sty 13»
