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Topic: Triphenylmethane

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	Triphenylmethane - LoveToKnow 1911
		TRIPHENYLMETHANE, (C 6 H 5) 3 CH, a hydrocarbon, important as being the parent substance of several series of exceedingly valuable dyestuffs, e.g.
		Triphenylmethane is a white crystalline solid, melting at 9 2° and boiling at 358°.
		3150, et seq.) by acting on triphenylmethane chloride (from triphenylmethane carbinol and phosphorus pentachloride, or from carbon tetrachloride and benzene in the presence of aluminium chloride) and its homologues with zinc, silver or mercury.
	www.1911encyclopedia.org /Triphenylmethane (476 words)

	Kinetics: Fading of Triphenylmethane Dyes
		Triphenylmethane dyes are water-soluble organic compounds that contain a colored cation.
		The reaction of OH ion with triphenylmethane dyes results in a disruption of the conjugation and loss of color.
		Since the absorbance of the violet colored triphenylmethane cation is directly proportional to its concentration, the kinetics of the reaction can be determined by measuring the change in absorbance as a function of time.
	www.uni-regensburg.de /Fakultaeten/nat_Fak_IV/Organische_Chemie/Didaktik/Keusch/chembox_trph-e.htm (919 words)

	Photographic material containing a non-sensitizing dye absorbing at 670 nm - Patent 5362612
		Photographic material according to claim 1 wherein said triphenylmethane dye is present in an undercoat or in a backing layer, serving as anti-halation dye.
		Photographic material according to claim 5 wherein said triphenylmethane dye is present in said undercoat or said backing layer in such an amount that an optical density ranging between 0.1 and 1.5 measured at 670 nm is obtained in said layer.
		Dyes absorbing in the red spectral region of the di- or triphenylmethane type, some of which bear an electron-withdrawing group, are disclosed in e.g.
	www.freepatentsonline.com /5362612.html (4418 words)

	Decolorization of triphenylmethane, azo, and anthraquinone dyes by a newly isolated Aeromonas hydrophila strain.
		Decolorization of triphenylmethane, azo, and anthraquinone dyes by a newly isolated Aeromonas hydrophila strain.
		Triphenylmethane dye, e.g., Crystal Violet, Basic Fuchsin, Brilliant Green, and Malachite Green (50 mg l(-1)) were decolorized more than 90% within 10 h under aerobic culture condition and Crystal Violet could be used as sole carbon source and energy source for cell growth.
		The color removal of triphenylmethane dyes was due to a soluble cytosolic enzyme, and the enzyme was an NADH/NADPH-dependent oxygenase; For azo and anthraquinone dyes, e.g., Acid Amaranth, Great Red GR, Reactive Red KE-3B, and Reactive Brilliant Blue K-GR (50 mg l(-1)) could be decolorized more than 85% within 36 h under anoxic condition.
	www.medscape.com /medline/abstract/16622679 (304 words)

	Amazon.com: triphenylmethane (Site not responding. Last check: 2007-11-04)
		Triphenylmethane derivatives from condensations of phenols with hydroxybenzaldehydes by John Edmund Driver (Unknown Binding - 1955)
		the antibacterial activity of stabilized triphenylmethane cationic dyes was related to...
		toluene to diphenylmethane and lastly triphenylmethane (pK,s = 41.2, 33.0, and...
	www.amazon.com /s?ie=UTF8&keywords=triphenylmethane&index=blended&page=1 (914 words)

	Sample Abstract
		The four chemical classes used were azo, triphenylmethane, phenazotionium, and phenazine dyes.
		The study required the use of tightly sealed anaerobe culture vessels and an anaerobic gassing apparatus used to evacuate oxygen and fill the culture vessels with nitrogen gas.
		The class of dyes favored for degradation by the intestinal microbes seemed to be triphenylmethane group.
	www.bridgewater.edu /~emitchel/convo/abstract.htm (202 words)

	CiteULike: Triphenylmethane Reductase from Citrobacter sp. Strain KCTC 18061P: Purification, Characterization, Gene ... (Site not responding. Last check: 2007-11-04)
		The enzyme was heterologously expressed in Escherichia coli, and the purified recombinant enzyme showed characteristics similar to those of the native enzyme.
		This is the first report of a triphenylmethane reductase characterized from any organism.
		This is the first report of a triphenylmethane reductase characterized from any organism.}, author = {Jang, Moon-Sun and Lee, Young-Mi and Kim, Cheorl-Ho and Lee, Jai-Heon and Kang, Dong-Woo and Kim, Seok-Jo and Lee, Young-Choon }, citeulike-article-id = {1155418}, doi = {10.1128/AEM.71.12.7955}, journal = {Appl.
	www.citeulike.org /user/loison/article/1155418 (595 words)

	Triphenylmethane Reductase from Citrobacter sp. Strain KCTC 18061P: Purification, Characterization, Gene Cloning, and ...
		The purified enzyme catalyzes the decolorization of several triphenylmethane dyes, i.e., crystal violet, basic fuchsin, brilliant green and malachite green.
		The maximal activity of TpmD for above four triphenylmethane dyes was observed at 50 degrees C - 55 degrees C and pH 7.4 - 8.0.
		Both NADH/NADPH and molecular oxygen are necessary for the enzyme to decolorize triphenylmethane dyes, indicate the enzyme is an NADH/NADPH-dependent oxygenase.
	comparative.lib.bioinfo.pl /pmid:16332773 (2447 words)

	[No title]
		Decolorization of triphenylmethane dyes and textile and dye-stuff effluents by Kurthia sp.
		Screening for organisms applicable to the decolorization of triphenylmethane dyes and optimization of biotransformation conditions in stirred tank reactor.
		Biodegradability of triphenylmethane dyes by newly isolated bacterium.
	www.cmer.wsu.edu /~rajesh/Publications.htm (1591 words)

	Colorant compositions invention
		Disclosed herein are colorant compositions having a triphenylmethane (“TPM”) derived structure having improved stability to alkaline conditions.
		TPM colorants can be prepared by first condensing an aromatic aldehyde with two equivalents of an aromatic amine (which will hereafter be referred to as the "coupler" or "coupling component") in the presence of an acid such as sulfuric acid, phosphoric acid, or muriatic acid.
		This patent teaches that TPM dyes containing deactivating (electron withdrawing) or weakly activating groups substituted at the ortho- and/or para-positions relative to the central methane carbon and/or auxochrome groups (located on or attached to the aromatic rings of the TPM) have enhanced survival in alkaline bleach medium.
	www.freshpatents.com /Colorant-compositions-dt20060518ptan20060101593.php (1778 words)

	Absorption Maxima of Triphenylmethane Dyes
		The individual spectra of the triphenylmethane dyes are overlayed and the respective absorption maxima are determined (Fig.
		values of structurally symmetric triphenylmethane dyes should increase with increasing electron-donating ability of the terminal amino groups.
		The electron donating resonance effect of the dimethylamino group is stronger than that of the amino group.
	www.uni-regensburg.de /Fakultaeten/nat_Fak_IV/Organische_Chemie/Didaktik/Keusch/spectr_trph-e.htm (538 words)

	triphenylmethane - Search Results - MSN Encarta
		No results were found for your search in Encarta.
		Triphenylmethane definition, words related to triphenylmethane, proper usage and pronunciation of...
		A colorless crystalline hydrocarbon, (C 6 H 5) 3 CH, from which a large number of synthetic dyes...
	encarta.msn.com /triphenylmethane.html (80 words)

	Analysis of the Solvatochromic Behavior of the Disubstituted Triphenylmethane Dye Brilliant Green (Site not responding. Last check: 2007-11-04)
		In particular, both the ratio of the heights of these Gaussian peaks and the ratio of their areas exhibit an inverted dependence on solvent dielectric constant, i.e., a reversal of solvatochromic behavior in media of low polarity.
		Such an absorption spectrum analysis facilitates the use of triphenylmethane dyes that lack symmetric trisubstitution of the phenyl rings as environment-sensitive spectroscopic probes.
		We demonstrate further the utility of this approach through the spectrophotometric determination of the critical micelle concentration of the anionic surfactant sodium dodecyl sulfate using Brilliant Green as an optical probe.
	pubs.acs.org /cgi-bin/abstract.cgi/ancham/1998/70/i19/abs/ac980318y.html (195 words)

	JAIC 1993, Volume 32, Number 3, Article 7 (pp. 291 to 310)
		Color changes as a function of exposure duration are shown in figure 4 for the three triphenylmethane colorants.
		The three triphenylmethane colorants that faded in the first test showed only modest fading or no fading upon re-exposure to SO2, with differences of 0.3 ± 1.3, 1.7 ± 0.4, and 0.9 ± 0.2 ΔE units for basic fuchsin, brilliant green, and pararosaniline base, respectively.
		Since fugitiveness may be closely correlated with colorant chemical functionality, as we have observed in earlier work with ozone (Grosjean et al., 1987, 1988a, 1988b, 1989), this conclusion can probably extended to many other colorants that are structural homologues of those included in this study.
	aic.stanford.edu /jaic/articles/jaic32-03-007_3.html (1608 words)

	[No title]
		It is important to keep track of where the benzoic acid and triphenylmethane components are.
		In each of the blanks below, answer “benzoic acid”, “sodium benzoate”, or “triphenylmethane” to indicate which species will be the dominant component in the solution indicated.
		Find the molecular weights and melting points of triphenylmethane and benzoic acid and list them here (and in your lab notebook).
	www.uwsp.edu /chemistry/jdroske/courses/325/ExtractionandCrystPrelab.doc (907 words)

	Biotransformation of Malachite Green by the Fungus Cunninghamella elegans -- Cha et al. 67 (9): 4358 -- Applied and ...
		The filamentous fungus Cunninghamella elegans ATCC 36112 metabolized the triphenylmethane dye malachite green with a first-order
		Decolorization of azo, triphenylmethane, heterocyclic, and polymeric dyes by lignin peroxidase isozymes from Phanerochaete chrysosporium.
		Decolorization of azo and triphenylmethane dyes by Pycnoporus sanguineus producing laccase as the sole phenol oxidase.
	aem.asm.org /cgi/content/full/67/9/4358 (1670 words)

	Isolation and characterization of microorganisms capable of decolorizing various triphenylmethane dyes.
		Isolation and characterization of microorganisms capable of decolorizing various triphenylmethane dyes.
		Various soil and sludge samples collected from the vicinity of textile dyeing industries and waste disposal sites were used for enrichment of microbial population in the presence of triphenylmethane (TPM) dye Acid Violet-17 (AV-17).
		Twenty-five (25) isolates were screened for their ability to decolorize AV-17 dye added at a rate of 10 mgl(-1) in mineral salts medium (MSM) agar plates.
	www.medscape.com /medline/abstract/14768029 (262 words)

	Triphenylmethane - Wikipedia, the free encyclopedia
		The trityl anion absorbs strongly in the visible region, making it red.
		If the hydride is used up then the solution will turn colourless.
		Triphenylmethane can be synthesized by Friedel-Crafts reaction from benzene and chloroform with aluminium chloride catalyst.
	en.wikipedia.org /wiki/Triphenylmethane (219 words)

	CCCC 1995, Volume 60, Issue 1, Abstracts pp. 34-42 (Site not responding. Last check: 2007-11-04)
		Magnetite particles bearing covalently immobilized copper phthalocyanine dye ("blue magnetite") were prepared and used for the sorption of triphenylmethane dyes from aqueous solutions.
		The binding of some triphenylmethane dyes bearing two or three amino groups (basic fuchsin, crystal violet, malachite green) followed the Langmuir adsorption model.
		The presence of amino groups in the molecules of triphenylmethane dyes seems to be necessary for their efficient binding on blue magnetite.
	cccc.uochb.cas.cz /Vol/60/No01/19950034.html (180 words)

	IUPAC Gold Book
		Colourless compounds formed by reduction of triphenylmethane dyes.
		Generally, they are amino or hydroxy derivatives of triphenylmethane.
		Use of this class name, which is more or less parochial to the technology of dyes, is not endorsed.
	goldbook.iupac.org /L03502.html (94 words)

	Barnard College Organic Chemistry Lab 2 Recrystallization
		Test the solubility of standard triphenylmethane in methanol, water, and toluene.
		Dissolve a known amount of the impure triphenylmethane in the minimum amount of hot suitable solvent.
		Determine the melting points of impure, recrystallized, and standard triphenylmethane and compare the melting points.
	www.barnard.edu /dept/chem/orgolab/lab2.htm (81 words)

	Projection crystallography
		Triphenylmethane crystals exposed for 1/2 second at f/8, 8X magnification.
		The only materials needed that you may not have in your darkroom are microscope slides and cover glass, and some inexpensive sheet polarizing material.
		Good candidates for polarized crystallography include photographic developers, citric acid, and vitamin C. The example shown here was created with triphenylmethane.
	www.rit.edu /~andpph/text-projection-crystals.html (889 words)

	Food coloring-blue (Site not responding. Last check: 2007-11-04)
		FDandC Blue No. 1, or Brilliant Blue FCF, is a triphenylmethane color.
		Triphenylmethane consists of three aromatic rings that are attached to a central carbon atom.
		This dye is water soluble and is poorly absorbed by the body, which means that more than 90 percent will be recovered in the feces unchanged, making it readily usable in most foods.
	www.cas.astate.edu /draganjac/BlueFC.html (463 words)

	IngentaConnect Decolorization of triphenylmethane dyes and textile and dye-stuff...
		IngentaConnect Decolorization of triphenylmethane dyes and textile and dye-stuff...
		Keywords: Biotransformation; decolorization; triphenylmethane dyes; synthetic effluent; textile and dye-stuff effluent; chemical oxygen demand; Kurthia sp.
		You may be required to register, activate a subscription or purchase the article before you can obtain the full text.
	www.ingentaconnect.com /content/els/01410229/1999/00000024/00000007/art00159 (92 words)

	CIPO - Canadian Patent Database - Claims - 2294886 (Site not responding. Last check: 2007-11-04)
		If your browser does not support Javascript or if you have turned off the Javascript all of the content and features of the page will still be available but the page may not look exactly as the designers intended.
		A triphenylmethane derivative according to claim 1 wherein,
		The triphenylmethane derivative according to claim 2, wherein R11 through R14 each represent a hydrogen atom; and R15 and R16 are the same or different from each other, and each represent a hydrogen atom or a C1-C6-alkyl group.
	patents1.ic.gc.ca /claims?patent_number=2294886&language= (891 words)

	IngentaConnect Triphenylmethane Dye of Sulfophthalein Series Adducts with Polyvi... (Site not responding. Last check: 2007-11-04)
		IngentaConnect Triphenylmethane Dye of Sulfophthalein Series Adducts with Polyvi...
		Triphenylmethane Dye of Sulfophthalein Series Adducts with Polyvinylpyrrolidone and Their Use in Chemical Analysis
		You will be able to remove this item from your shopping cart at any time before you have completed check-out.
	www.ingentaconnect.com /content/maik/janc/2001/00000056/00000005/00341816 (149 words)

	Colorquip, Mumbai, Maharashtra
		Manufacturers and exporters of acid dyes, triphenylmethane acid dyes, industrial acid dyes, textile dyes, paper dyes, salt free dyes, liquid dyes, specialty dyes and dyestuffs.
		Manufacturers and exporters of basic dyes, industrial dyes, acid dyes, triphenylmethane acid dyes with C.I. names like acid violet 17, acid violet 49, coomassie blue dye, acid blue 7 and acid blue n.
		Engaged in manufacturing and supplying liquid dyes, basic dyes, industrial dyes, acid dyes, triphenyl methane based acid dyes, salt free dyes, chrome free dyes, textile dyes and other specialty dyestuffs.
	www.indiamart.com /company/591900 (400 words)

	CAT.INIST
		Kinetic and isotherm analyses for adsorption of a triphenylmethane dye onto jackfruit peel carbon
		A carbon adsorbent derived from jackfruit peel was used for the removal of a triphenylmethane dye, malachite green dye, from aqueous solution.
		Kinetic and isotherm data were modeled with various kinetic (Lagergren's pseudo-first order, Ritchie second order and modified Ritchie second order equations) and isotherm (Freundlich, Langmuir, Redlich-Peterson and Sips equations) model equations and the results obtained were suitably interpreted.
	cat.inist.fr /?aModele=afficheN&cpsidt=16659169 (164 words)

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