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At times, the platinum seemed malleable, but when it was alloyed with iridium, it would be much more brittle. Sometimes the metal was entirely incombustible, but when alloyed with osmium, it would volatilize.
This started what is known as the "platinum age" in Spain. Platinum, along with the rest of the platinum-group metals , is obtained commercially as a by-product from nickel and copper mining and processing.
During electrorefining of copper , noble metals such as silver, gold and the platinum-group metals as well as selenium and tellurium settle to the bottom of the cell as "anode mud", which forms the starting point for the extraction of the platinum-group metals.
If pure platinum is found in placer deposits or other ores, it is isolated from them by various methods of subtracting impurities.
Because platinum is significantly denser than many of its impurities, the lighter impurities can be removed by simply floating them away in a liquid.
Platinum is paramagnetic , whereas nickel and iron are both ferromagnetic. These two impurities are thus removed by running an electromagnet over the mixture.
Because platinum has a higher melting point than most other substances, many impurities can be burned or melted away without melting the platinum.
Finally, platinum is resistant to hydrochloric and sulfuric acids, whereas other substances are readily attacked by them. Metal impurities can be removed by stirring the mixture in either of the two acids and recovering the remaining platinum.
One suitable method for purification for the raw platinum, which contains platinum, gold, and the other platinum-group metals, is to process it with aqua regia , in which palladium, gold and platinum are dissolved, whereas osmium, iridium, ruthenium and rhodium stay unreacted.
The gold is precipitated by the addition of iron II chloride and after filtering off the gold, the platinum is precipitated as ammonium chloroplatinate by the addition of ammonium chloride.
Ammonium chloroplatinate can be converted to platinum by heating. The remaining The most common use of platinum is as a catalyst in chemical reactions, often as platinum black.
It has been employed as a catalyst since the early 19th century, when platinum powder was used to catalyze the ignition of hydrogen.
Its most important application is in automobiles as a catalytic converter , which allows the complete combustion of low concentrations of unburned hydrocarbons from the exhaust into carbon dioxide and water vapor.
Platinum is also used in the petroleum industry as a catalyst in a number of separate processes, but especially in catalytic reforming of straight-run naphthas into higher-octane gasoline that becomes rich in aromatic compounds.
PtO 2 , also known as Adams' catalyst , is used as a hydrogenation catalyst, specifically for vegetable oils. From to , the meter was defined as the length of a platinum-iridium alloy bar, known as the international prototype of the meter.
The previous bar was made of platinum in Until May , the kilogram was defined as the mass of the international prototype of the kilogram , a cylinder of the same platinum-iridium alloy made in The resistance wire in the thermometer is made of pure platinum e.
The NIST manufactured the wires from platinum bar stock with a chemical purity of The standard hydrogen electrode also uses a platinized platinum electrode due to its corrosion resistance, and other attributes.
Coins, bars, and ingots are traded or collected. It is used for this purpose for its prestige and inherent bullion value. Jewellery trade publications advise jewellers to present minute surface scratches which they term patina as a desirable feature in attempt to enhance value of platinum products.
In watchmaking , Vacheron Constantin , Patek Philippe , Rolex , Breitling , and other companies use platinum for producing their limited edition watch series.
Watchmakers appreciate the unique properties of platinum, as it neither tarnishes nor wears out the latter quality relative to gold. During periods of sustained economic stability and growth, the price of platinum tends to be as much as twice the price of gold, whereas during periods of economic uncertainty,  the price of platinum tends to decrease due to reduced industrial demand, falling below the price of gold.
Gold prices are more stable in slow economic times, as gold is considered a safe haven. Although gold is also used in industrial applications, especially in electronics due to its use as a conductor, its demand is not so driven by industrial uses.
In the 18th century, platinum's rarity made King Louis XV of France declare it the only metal fit for a king.
Platinum is used as an alloying agent for various metal products, including fine wires, noncorrosive laboratory containers, medical instruments, dental prostheses, electrical contacts, and thermocouples.
Platinum-cobalt, an alloy of roughly three parts platinum and one part cobalt, is used to make relatively strong permanent magnets. Platinum's rarity as a metal has caused advertisers to associate it with exclusivity and wealth.
Platinum is considered a precious metal, although its use is not as common as the use of gold or silver. It was the first British crown to be made of this particular metal.
According to the Centers for Disease Control and Prevention , short-term exposure to platinum salts may cause irritation of the eyes, nose, and throat, and long-term exposure may cause both respiratory and skin allergies.
As platinum is a catalyst in the manufacture of the silicone rubber and gel components of several types of medical implants breast implants, joint replacement prosthetics, artificial lumbar discs, vascular access ports, etc.
The Food and Drug Administration and other institutions have reviewed the issue and found no evidence to suggest toxicity in vivo. From Wikipedia, the free encyclopedia.
This article is about the chemical element. For other uses, see Platinum disambiguation. Chemical element with atomic number See also: Platinum group.
Main article: Isotopes of platinum. Main articles: Platinum as an investment and Platinum coin. See also: Platinum album and Platinum color.
Chelated platinum Iron—platinum nanoparticle List of countries by platinum production Mixed metal oxide electrode Platinum group Platinum in Africa Platinum nanoparticle Platinum print s commodities boom.
Pure and Applied Chemistry. Online Etymology Dictionary. Maintain social distancing Maintain at least 6ft distance between yourself and anyone who is coughing or sneezing.
Avoid touching eyes, nose and mouth Why? Practice respiratory hygiene Make sure you, and the people around you, follow good respiratory hygiene.
Natural- Platinum Ish. White or yellow 14K gold contains only The Federal Trade Commission demands specific marks for the content of any precious metal alloy.
The stamp for this particular alloy, per FTC guidelines, is Pt. Pt is the name. Platinum was once the most expensive of the precious metals traded, maxing out at 1, US dollars per troy ounce.
That is no longer the case as it has been surpassed by gold. Platinum is both malleable and ductile and can be extracted from ore that contains platinum group elements PGM.
These elements include iridium, osmium, palladium, platinum, rhodium, and ruthenium. Enter your email address to subscribe to Pure Platinum Fort Lauderdale blog and receive notifications of new posts by email.
Email Address:. Sign me up! Pure Platinum Ft Lauderdale. Share this: Facebook Twitter Email Print.The American Platinum Eagle was first minted in At purity, with the Statue of Liberty and the Soaring Eagle depicted on either side, this coin is the official platinum bullion coin of the United States Mint. Specialties: Every guest that arrives at Pure Platinum is treated as our VIP Guest. Our Hostess will meet and greet you in our lobby and one of our highly trained staff will escort you and your party to one of our main floor tables. You. Pure Platinum® MC is a nonprofit organization that was formed to promote skilled motorcycle awareness and to serve as an advocate for motorcyclists on related issues and share camaraderie with other enthusiasts throughout the motorcycle community. PURE PLATINUM is a collection of artists that work together to utilize everyone's strong points and knowledge of the current trends and classics. The Nike Dunk Slam Jam delivers two colorways of the popular basketball model, this pair being titled “Pure Platinum”. A mix of materials are present on the sneaker’s upper, including leather, nubuck, and rubber. The Swoosh has a translucent gummy-like texture to match the translucent midsole. Chemical Gratisartikel Viking In the Sudbury Basin, the huge quantities of nickel ore processed make up for the fact platinum is present as only 0. Archived from the original on 26 October White or yellow 14K gold contains only Most often the native platinum is found in secondary deposits in alluvial deposits. Its most important application is in automobiles Bingo Slot Machines Tips a catalytic converterwhich allows the complete combustion of low concentrations of unburned hydrocarbons from the exhaust into carbon dioxide and water vapor. Until Maythe kilogram was defined as the mass of the international prototype of the kilograma cylinder of the same platinum-iridium alloy made in By following good respiratory hygiene you protect the people around Spiele Online Kinder from viruses such as cold, flu and COVID Endocrine-Related Cancer. As Bester Magier is a catalyst in the manufacture of the silicone rubber and gel Woodbine Racetrack Live Video of several types of medical implants breast implants, joint replacement prosthetics, artificial lumbar discs, vascular access ports, Dart Ergebnisse. Ich habe meine trockene Haut damit super im Griff. Wie werden Bewertungen berechnet? Pure Platinum. Produktinformationen Technische Details. Pure Platinum - Buy Platinum Jewellery Online in India with the latest jewellery designs from our online jewellery shopping store. Best Platinum Jewellery website for online jewellery shopping in India with Designer Rings, Chains, Bands, Kadas, Pendants, Earings and Bracelets. Pure Platinum offers the perfect balance of fitness, function and wellness classes weekly including strength and cardio, group fitness, group personal training, cycling, kickboxing, pilates, yoga, and meditation. So, go in with the thought that you’re going to accomplish something new . Pure platinum is a lustrous, ductile, and malleable, silver-white metal. Platinum is more ductile than gold, silver or copper, thus being the most ductile of pure metals, but it is less malleable than gold. The metal has excellent resistance to corrosion, is stable at .