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Topic: Quercitron


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Dye

In the News (Wed 15 Feb 12)

  
  Quercitron - LoveToKnow 1911
QUERCITRON, a yellow dyestuff obtained from the bark of the quercitron oak, Quercus tinctoria, a fine forest tree indigenous in North America.
The ruddy-orange decoction of quercitron contains quercitannic acid, whence its use in tanning, and an active dyeing principle, quercitrin, C21H22012.
Quercitron was first introduced as a yellow dye in 1775, but it is principally used in the form of flavin, which is the precipitate thrown down from a boiling decoction of quercitron by sulphuric acid.
www.1911encyclopedia.org /Quercitron   (338 words)

  
 quercitron - definition by dict.die.net   (Site not responding. Last check: 2007-10-11)
quercitron n 1: a yellow dye made from the bark of the quercitron oak tree 2: medium to large deciduous timber tree of the eastern United States and southeastern Canada having dark outer bark and yellow inner bark used for tanning; broad 5-lobed leaves are bristle-tipped [syn: fl oak, yellow oak, quercitron oak, Quercus velutina]
See Quercitron.] (Chem.) A glucoside extracted from the bark of the oak (Quercus) as a bitter citron-yellow crystalline substance, used as a pigment and called quercitron.
The yellow inner bark of the Quercus tinctoria, the American fl oak, yellow oak, dyer's oak, or quercitron oak, a large forest tree growing from Maine to eastern Texas.
dict.die.net /quercitron   (129 words)

  
 The Household Cyclopedia - Dying
Weld and quercitron bark yield nearly the same kind of color; but the bark yields coloring matter in greater abundance and is cheaper than weld.
Wool may be died scarlet by first boiling it in a solution of protochloride of tin, then dyeing it pale yellow with quercitron bark, and afterwards crimson with cochineal, for scarlet is a compound color, consisting of crimson mixed with a little yellow.
Dove-color and drab are given by acetate of iron and quercitron bark; the cloth is afterwards prepared in the usual manner.
www.mspong.org /cyclopedia/dying.html   (12660 words)

  
 Quercitron - Electronic Music Sound Paintings   (Site not responding. Last check: 2007-10-11)
Quercitron is an electronic audio project dedicated to ambient noises and textures.
Quercitron aims to use unique sounds and recording processes to produce an audio experience that when listened to will create an atmosphere yet allow you to focus on the task at hand.
Quercitron is currently recording audio tracks for it's first self-released collection of soundscapes and ambient electronic music.
www.quercitron.net   (96 words)

  
 CHAPTER 6   (Site not responding. Last check: 2007-10-11)
Quercitron is a brilliant yellow dye that occurs in the mid and inner bark of Quercus velutina, commonly known as fl oak, a tree found in eastern North American broadleaf forests.
Quercitron remained in commercial use until the second quarter of the twentieth century when it was replaced by aniline dyes [Adrosko, 1971].
An extract of quercitron, known as flavine, is free from tannin and produces brighter colours than the pulverized bark [Wickens 1986].
www.fao.org /DOCREP/005/Y4351E/y4351e0a.htm   (6503 words)

  
 136. Quercetin and quercitron (FAO Nutrition Meetings Report Series 46a)
When 20 or 100 mg of commercial quercetin was given by stomach tube to rats as a suspension, either in a single dose or in four daily doses of 5 mg or 25 mg respectively, 50 per cent.
Comments The production of cataracts in rats with commercial quercetin was not observed with the chromatographically pure compound and, consequently, may be attributable to impurities.
However, information on the occurrence of toxic impurities in commercial samples of quercetin and quercitron is required.
www.inchem.org /documents/jecfa/jecmono/v46aje05.htm   (661 words)

  
 Amazon.com: "quercitron bark": Key Phrase page   (Site not responding. Last check: 2007-10-11)
YELLOW Weld is the substance much employed for this color; fustic, and quercitron bark are also used; and indeed these three constitute our chief yellows.
velutina), or the dye produced from it; hence nouns quercitron (oak) the tree itself.
Researches 319, The Quercitron bark is pro- duced by the Quercus nigra of Linnaeus.
www.amazon.com /phrase/quercitron-bark   (534 words)

  
 JAIC 1979, Volume 19, Number 1, Article 3 (pp. 14 to 23)
FIGURE 1 shows the lakes formed by the yellow natural dyes that are most frequently encountered: weld extract, quercitron, Persian berries, old fustic, turmeric, and kalama.
Shown are the colors of the aluminum, iron, copper, and uranium lakes of the dyes just mentioned, and also the colors of the tin lakes both before and after treatment with ammonia.
Looking at Figure 1 one can see that only the tin lakes of quercitron and turmeric are orange.
aic.stanford.edu /jaic/articles/jaic19-01-003_4.html   (269 words)

  
 Eastern Black Oak   (Site not responding. Last check: 2007-10-11)
Leaf is similar to Northern Red Oak, but thicker, glossier above, and sometimes hairy beneath.
This tree is sometimes called Yellow Oak, or the curious name Quercitron Oak.
Habitat and range: found in dry, sandy and rocky soils, but also on clay hillsides, in extreme S. Ontario and Maine south to NW Florida, west to Texas, and north to Minnesota.
people.brandeis.edu /~orlove/field_bio/pages/black_oak.html   (198 words)

  
 quercitron- WordWeb dictionary definition
A yellow dye made from the bark of the quercitron oak tree
Medium to large deciduous timber tree of the eastern United States and southeastern Canada having dark outer bark and yellow inner bark used for tanning; broad five-lobed leaves are bristle-tipped
- fl oak, yellow oak, quercitron oak, Quercus velutina
www.wordwebonline.com /en/QUERCITRON   (51 words)

  
 quercitron   (Site not responding. Last check: 2007-10-11)
Definitions of quercitron on the Web in all languages:
Related phrases: fl oak quercitron oak quercus velutina yellow oak flavin
fl oak, quercitron oak, quercus velutina, yellow oak, dye,
dict.vocamania.com /quercitron.aspx   (158 words)

  
 MFA - CAMEO - Material Description   (Site not responding. Last check: 2007-10-11)
A yellow vegetable dye extracted from the fl or dark brown bark of the fl oak, Quercus velutina (formerly Quercus nigra), that is native to the Eastern and Midwestern part of the United States.
Quercitron introduced in England in 1775 by Edward Bancroft as a substitute for weld.
The outermost layer gives a bright yellow while the inner bark gives a darker oranges and tans.
www.mfa.org /_CAMEO/FRONTEND/fullrecord.asp?name=quercitron   (224 words)

  
 White Papers, Webcasts, and Product Information from Quercitron LLC
QUERCITRON provides Companies with Web Site Development, Security, Network Solutions, e-Commerce, Design/Art Direction, Software Development and Custom Development.
Our focus is on building products and services that enable our clients to utilize the World Wide Web to increase both their market exposure and profitability.
QUERCITRON's goal is to help companies embrace this change and to establish our clients as a leader in their industry and on the World Wide Web.
whitepapers.businessweek.com /detail/ORG/1084331272_546.html   (158 words)

  
 quercitron   (Site not responding. Last check: 2007-10-11)
Tip: Click on the first link on a line below to go directly to a page where "quercitron" is defined.
Quercitron : Online Plain Text English Dictionary [home, ]
QUERCITRON : 1911 edition of the Encyclopedia Britannica [home, ]
www.vocamania.com /quercitron.aspx   (424 words)

  
 American Wholecloth Quilting Traditions
The process of calendering fabrics may have begun in Great Britain, but there is no definite proof of that.
Down by the Old Millstream: Quilts in Rhode Island, a book edited by Linda Welters and Margaret OrdoƱez (Ohio: The Kent State University Press, 2000), 194, states that in 1795, Dr. Edward Bancroft of Massachusetts commercialized quercitron, a dyeing agent that is derived from the bark of the American Oak Tree.
This bark yielded the permanent colors of yellow, brown, or green, depending on the type of mordant used.
www.quiltersmuse.com /wholecloth_quilts3.htm   (2636 words)

  
 Reproductionfabrics.com - reproduction fabrics of 1750-1970
In one method they printed the leaf or stem blue and overprinted it with yellow, or vice versa and called 'overdying' A second method involved penciling with indigo that contained a mordant for quercitron.
A dip in the yellow quercitron dye bath produced a well registered green.
Prints that were green when purchased could change over time.
www.reproductionfabrics.com /lines.php?subcat=54   (231 words)

  
 Quercitron LLC White Papers, Webcasts, Case Studies and Product Information
Quercitron LLC White Papers, Webcasts, Case Studies and Product Information
Below is a list of the key products that Quercitron LLC has listed on Govtech.net Library:
Sign up for a free newsletter with White Papers, Case Studies and Product Info from this company:
library.govtech.net /detail/ORG/1084331272_546.html   (172 words)

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