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Topic: Tarnish

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	World Gold Council > jewellery
		Tarnishing is superficial corrosion of the carat gold surface and is evident by a usually dark discolouration - the tarnish film.
		Pure gold, of course, is not susceptible to tarnishing and this property is generally not greatly reduced by alloying to carat golds as long as the gold content is high enough, i.e.
		Thus tarnishing is generally seen only in the lower carat golds (8-10 ct), occasionally in14 and 18 ct and even higher caratages in some countries.
	www.gold.org /jewellery/technology/caratage/tarnishing.html (848 words)

	Holiday Tip: A Rub-Free Solution For Silver Tarnish
		"Tarnish is produced when silver reacts with sulfur compounds in the air, such as the gas released when you boil eggs.
		To remove tarnish, Kruger triggers another chemical reaction that separates the sulfur from the silver.
		The tarnish in the cracks and crevices should be removed by this procedure.
	www.eurekalert.org /pub_releases/1998-12/JHU-HTAR-081298.php (557 words)

	Tarnish Removal from Silver
		Silver tarnishes because it undergoes a chemical reaction with sulfur-containing substances in the air.
		Depending on the amount of tarnish, the silver will be bright and the aluminum foil may be brown with tarnish (aluminum oxide), in a short while.
		This could be a simple example of a chemical reaction, or it could be used as a visual to demonstrate properties of sulfur, when learning the periodic table, and the physical and chemical characteristics of the major elements.
	educ.queensu.ca /~science/main/concept/chem/c03/C03DEEA1.htm (960 words)

	Jelmar \| We Clean More Than You Think - News Detail (Site not responding. Last check: 2007-10-18)
		The biggest myth among consumers, says Gutterman, is that tarnish is caused by exposure to air, and therefore silver should be hidden away in cupboards and sideboards until ready to use.
		This is the key to preserving your silver -- remove the tarnish, but limit the frequency of polishing silver, as all polishes remove some of the silver.
		After the tarnish is removed, rinse the piece completely, this time in cold water, and immediately dry it thoroughly to avoid spots.
	www.jelmar.com /NewsDetail.asp?id=6 (651 words)

	Tarnish Prevention (Site not responding. Last check: 2007-10-18)
		Usually what is called tarnish in silver objects is due to reactions between the silver metal with several gases present at the atmosphere and water (humidity) including even the oxygen and also some polluting sulphide gases.
		So the main thing is to prevent the contact between silver objects and the air (and humidity of course!) Try not to use polythene bags for storage, especially the 'gripper' type as they trap gases inside and create a greenhouse type environment, which is particularly good at creating tarnish.
		It is not as pretty, but I have kept pieces wrapped for a couple of years with little tarnish to clean.
	www.newton.dep.anl.gov /askasci/chem03/chem03204.htm (388 words)

	CMA The Chemistry of Art Series : Teacher Demonstration: Removal of Tarnish from Silver (Site not responding. Last check: 2007-10-18)
		Wash the tarnished item with tap water and show the students the tarnished areas.
		The chemical cleaning of silver is an electrochemical process in which the electrons move from the aluminum to the silver in the tarnish.
		This process causes the silver object to become shiny again as the silver atoms are regenerated from the silver ions present in the tarnish.
	www.clemusart.com /educef/distance/Authenticity/html/6092074.html (519 words)

	Never-tarnish brass kitchen faucet (Site not responding. Last check: 2007-10-18)
		Builder: I have to replace our tarnished kitchen faucet because my husband is too big to work under the sink, or so he says.
		The brass body of the fixture is coated with a very thin coating of a brass alloy (looks identical to brass) in a vacuum chamber.
		This finish not only never tarnishes, but it is extremely durable.
	www.msbuilder.com /lib/ms023.shtml (662 words)

	tarnish. The American Heritage® Dictionary of the English Language: Fourth Edition. 2000. (Site not responding. Last check: 2007-10-18)
		To dull the luster of; discolor, especially by exposure to air or dirt.
		To cast aspersions on; sully: slander that tarnished the senator's image.
		Discoloration of a metal surface caused by corrosion or oxidation.
	www.bartleby.com /61/90/T0049000.html (126 words)

	NSF61-Chemical Cleaners, Tarnish Preventatives for Copper, Brass and Bronze \| Stone Chemical Company
		CU200L Tarnish Preventative prevents corrosion and the formation of tarnish on copper, brass, bronze, silver, nickel and other non-ferrous metals.
		CU200L Tarnish Preventative is often used to prevent tarnish on parts after machining and prior to plating (it must be removed prior to plating).
		CU200L Tarnish Preventative is also used when parts need to be stored or staged during the plating process, or after plating or cleaning to prevent tarnish on parts to be stored or shipped to the customer.
	www.stonechemical.com /copperbrass.asp (239 words)

	Tarnish - Wikipedia, the free encyclopedia
		When tarnish occurs, it is treated chemically, usually with strong acids.
		Most tarnishing is prevented by tinning, a process by which the reactive substance is coated in a non-reactive substance (such as tin or wax), and thus protected from oxygen.
		This page was last modified 04:15, 23 January 2006.
	en.wikipedia.org /wiki/Tarnish (110 words)

	JAIC 1996, Volume 35, Number 1, Article 2 (pp. 09 to 21)
		While daguerreotypes have been closely inspected under visible light, there appears to be no report of the use of short-wave ultraviolet illumination, a straightforward examination and documentation technique available to conservators.
		The scope of this investigation includes preliminary analysis, characterization of the tarnish, and a study of its rate of occurrence on a group of 110 daguerreotype plates.
		The findings indicate that the presence of this fluorescing tarnish may provide evidence of specific past treatments applied to daguerreotype plates.
	aic.stanford.edu /jaic/articles/jaic35-01-002_indx.html (202 words)

	Anti-tarnish aqueous treatment - Patent 6896739 (Site not responding. Last check: 2007-10-18)
		Such tarnish is removed by the composition and the composition treats the metal surface to retard the re-appearance of tarnish contaminants.
		Dipping a tarnished piece, whether tableware or jewelry, into this solution, and allowing it to remain immersed for a short period of time will remove the residual tarnish, brighten the article, and will maintain the metallic brilliance without tarnishing for a significantly longer period than the same silver alloy not treated in this manner.
		The composition and methods for removing tarnish from metal surfaces involve the application of an aqueous solution of and acid or acids, thiourea and a transition metal or metals for the purpose of removing tarnish and preventing its reformation.
	www.freepatentsonline.com /6896739.html (9189 words)

	Jihad Watch: Terrorists Tarnish Image of Islam, Says Abdullah
		As for tarnishing the image of Islam, the image was tarnished in my book by the founder, a brigand that used the sword and criminal activities such as murder, rape, theft, and so on to spread his ideology.
		As for "tarnishing the image of Islam" -- Abdullah should think for a moment, and just imagine what it might be like to be a non-Muslim who now has begun to read, with intelligent comprehension, the Qur'an, the hadith, and the sira.
		Actually terrorists haven't "tarnished" the image of Islam, they've instead educated the world as to the true nature of Islam.
	www.jihadwatch.org /archives/004003.php (3630 words)

	JCE 2000 (77) 328A [Mar] Silver to Black - and Back
		As a result, each time tarnish is removed, some of the silver is lost.
		However, tarnish can also be removed chemically through the reaction of aluminum with the tarnish.
		This activity allows students to remove tarnish from silver using the reaction of tarnish with aluminum.
	jchemed.chem.wisc.edu /Journal/Issues/2000/mar/abs328A.html (325 words)

	Sunshine Products - Welcome
		Tarnish Remover - Our cream is used for all types of metals.
		It can be used on not only gold, but on brass, bronze, copper, chrome, and sterling silver and on chains and watchbands.
		The polishing cream is also a professional tarnish remover without the harsh chemical smell. Will not scratch or remove gold.
	www.sunshine101.com (166 words)

	Kids Science Experiments - chemical reaction to clean silver tarnish
		For badly tarnished silver, you may need to repeat the experiment a 2nd time to remove all traces of tarnish.
		The easiest way to remove the tarnish is a chemical reaction that converts the silver sulfide without removing any of the silver.
		Depending on the amount of tarnish, the silver will be bright and the aluminum foil may be brown with tarnish.
	www.creativekidsathome.com /activities/science_experiment1.shtml (631 words)

	757 Brass tarnish removal
		Being almost one hundred years old, the case is tarnished to the point where it is virtually fl.
		Many polishes will remove the tarnish on the flat surfaces, however in the deep crevices the tarnish just can't be reached with polish.
		I have a vintage brass light which is not lacquered and has therefore obtained a nice tarnished finish, attached to a new brass rod and ceiling plate which is lacquered and won't tarnish and therefore looks too new next to the vintage piece.
	www.finishing.com /0600-0799/757.shtml (4303 words)

	American Metal Market: New silver alloys clean up tarnish problem - Brief Article
		Tarnish is the oxidation darkening of silver alloys that occurs naturally over time.
		While firestain has been eliminated by the new alloys, both Jackson and Johns are less keen to promote the tarnish-free characteristics that consumers might find most attractive.
		"You have to be very careful with the term 'tarnish free'," Jackson said.
	www.findarticles.com /p/articles/mi_m3MKT/is_73_108/ai_61650921 (782 words)

	Prevent tarnish on brass, copper and silver with EVERBRITE™.
		Prevent tarnish on brass, copper and silver with EVERBRITE™.
		EVERBRITE™ is a natural looking, clear protective coating which will seal and protect metal from tarnish, oxidation, corrosion, salt air and other damaging elements.
		This was great for the people that requested that look, but most of my clients liked the shiny new look of the fresh copper.
	www.everbrite.net /tarnish_prevention.html (531 words)

	Removing Tarnish (Site not responding. Last check: 2007-10-18)
		A simple chemical reaction causes tarnish to disappear naturally.
		Keeping the pan in the sink to minimize splashing, pour enough boiling water to cover the utensils.
		When the tarnish disappears, remove the silverware, and buff with a soft cotton cloth.
	www.marthastewart.com /page.jhtml?type=content&id=channel1044&catid=cat298 (71 words)

	Jelmar \| We Clean More Than You Think - TarnX Basic (Site not responding. Last check: 2007-10-18)
		The odor is the active ingredients in Tarn-X coming into contact with tarnish.
		This indicates that the tarnish, which is sulfur, is actually being removed with Tarn-X. Back to Top
		For heavily tarnished pieces, repeat above process until all tarnish is dissolved.
	www.jelmar.com /TarnXBasic.asp (916 words)

	Tarnish-Eliminating Jewelry Box at Hammacher Schlemmer
		Jewelry stored in this wooden jewelry box will never tarnish, thanks to a carbon cloth in the lining that attracts and absorbs the airborne pollutants that cause the metal to discolor.
		It is spacious enough to hold an entire collection without tangling or misplacing pieces, and it includes dividers on the uppermost level and ring slots on the bottom.
		Its velvet lining incorporates the carbon mesh that stops the tarnishing process cold, attracting and holding hydrogen sulfide and other airborne contaminants so your polished jewelry stays that way.
	www.hammacher.com /publish/66839.asp (166 words)

	Sterling Silver Jewelry, Flatware, Tableware Tarnish Prevention
		If you have expensive sterling silver flatware, dinnerware or tableware, we have the answer to your need for tarnish prevention and theft protection.
		We offer four styles of jewelry travel/storage bags to protect and store your fine sterling silver and silver-plated jewelry from tarnish between uses.
		For displaying your silver tableware in glass cabinets or cases, 3M anti-tarnish strips offer an alternative to covering your silver with silver cloth.
	www.silverguard.com (519 words)

	Goddard's - A Reputation Built on Tarnish
		The commonly used mercurial silver polish ate away the thin-layered silverplate.
		Goddard felt that there must be a way to remove tarnish from silverware without harming the finish.
		After many attempts, in 1839 he finally perfected a silver polish that would safely remove tarnish from even the thinnest plated silver.
	www.goddards.com /html/history.htm (195 words)

	Preventing Silver Tarnish
		The dark purple-blue-fl silver tarnish that most of us are familiar with occurs when the outer layer of silver reacts with sulphur.
		This sulphur can come from a variety of sources, including: from one's hands, from storing or displaying the silver near objects or substances that give off sulphur, and from the air around us (air pollution).
		Latex, which is found in elastics and latex gloves, also contains enough sulphur to cause silver to tarnish.
	www.uniclectica.com /conserva/silver1.html (617 words)

	Immersion Tin Tarnish
		They were built in April/May and have a heavy tarnish appearance on them, smd pads and through holes.
		Can this be cleaned or does the tarnish create issues that cannot be corrected when solderability is considered??
		If the immersion tin [imm tin] is discolored, it will not solder with routine processes.
	www.smtnet.com /Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=6360& (197 words)

	Trump Thought A.C. Gambling Venture Could Tarnish Name - March 30, 2004
		MARCH 30--Last week's stirring installment of "The Apprentice"--during which the Trump wannabes visited to The Donald's depressing Atlantic City gambling dens--reminded us of a confidential FBI document detailing how the developer once fretted about building in the shabby seaside resort.
		According to the 1981 bureau memo, a copy of which you'll find below, Trump told agents that he was worried that the A.C. venture might one day "tarnish his family's name" and that he could be exposed to organized crime figures.
		In our favorite part of the memo, Trump humors an agent by asking his "personal opinion" as to whether he should build in Atlantic City.
	www.thesmokinggun.com /archive/0330042trump1.html (142 words)

	ABC News: Incident Could Tarnish Chaney's Reputation (Site not responding. Last check: 2007-10-18)
		Ordering Player to Rough Up Opponent Could Tarnish 33-Year Hall of Fame Career of Temple's Chaney
		PHILADELPHIA Feb 26, 2005 — John Chaney is paying a steep price for an irrational decision that could tarnish a 33-year Hall of Fame career.
		Decades of goodwill by the Temple coach are close to being obscured after his premeditated plan of ordering rough play by one of his players backfired when a Saint Joseph's senior had his arm broken as a result.
	abcnews.go.com /Sports/wireStory?id=533959 (383 words)

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