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Topic: Auric chloride


In the News (Tue 2 Sep 14)

  
  Gold - LoveToKnow 1911
Aurous chloride, AuCl, is obtained as a lemon-yellow, amorphous powder, insoluble in water, by heating auric chloride to 185°.
Auric chloride, or gold trichloride, AuC1 3, is a dark rubyred or reddish-brown, crystalline, deliquescent powder obtained by dissolving the metal in aqua regia.
The electrolyte is gold chloride (2.5-3 parts of pure gold per loo of solution) mixed with from 2 to 6% of the strongest hydrochloric acid to render the gold anodes readily soluble, which they are not in the neutral chloride solution.
www.1911encyclopedia.org /G/GO/GOLD.htm   (11476 words)

  
 U.S. Patent: 6034030 - Vinyl acetate catalyst preparation method - March 7, 2000
In the preparation of the improved catalyst of the present invention, a suitable catalyst support is first impregnated with an aqueous solution containing either a water-soluble palladium compound or a water soluble gold compound.
Palladium (II) chloride, sodium palladium (II) chloride and palladium (II) nitrate are examples of suitable water-soluble palladium compounds, whereas auric (III) chloride or tetrachloroauric (III) acid and the alkali metal salts thereof can be used as the water-soluble gold compounds.
Subsequent to the fixing, the supports are washed such as with distilled water so as to remove the anions, such as the chlorides, which are still contained on the support and freed from the initial impregnating solution.
www.everypatent.com /comp/pat6034030.html   (3310 words)

  
 Process for refining noble metals from auriferous mines - Patent 6337056
The metals volatilize and slag off as chlorides, while the silver converts to salt silver chloride, and remains in the molten state and is separated by decantation.
whereas auric chloride is not affected by this reaction.
The filtration liquid that arrives from the precipitation of gold with hydrazine still contains ppm of auric chloride, platinum and palladium which are advantageously recovered by passing through an ion-exchange resin for example of the kind of Relite C 250 (Mitsubishi Kasei Co.) in accordance with the above described recovery procedure.
www.freepatentsonline.com /6337056.html   (3675 words)

  
 Gold   (Site not responding. Last check: 2007-10-09)
Gold(III) chloride is used as a catalyst in organic chemistry.
Auric chloride (AuCl3) and chlorauric acid (HAuCl4) are the most common compounds of gold.
Although gold is a noble metal it can form many compounds (auric chloride and chloroauric acid are the most common).
www.stellarjewelry.com /gold.htm   (2869 words)

  
 Amazon.com: "auric chloride": Key Phrase page   (Site not responding. Last check: 2007-10-09)
and the second is chlorination in the presence of both chlorine gas and gaseous metal chlorides that complex auric chloride.
When a solution of auric chloride is precipitated with a solution of stannous chloride, a reddish-purplish precipitate is formed containing both metallic gold and tin hydroxide.
Thus a solution of auric chloride, AuC13, in contact with organic substances is reduced first to aurous chloride,...
www.amazon.com /phrase/auric-chloride   (589 words)

  
 More About Gold
The characteristic oxidation states of gold are +1 (aurous compounds) and +3 (auric compounds).
Among the relatively few gold compounds of practical importance are gold(I) chloride, AuCl; gold(III) chloride, or gold trichloride, AuCl3; and chlorauric acid, HAuCl4.
The impurities form chloride compounds that separate into a layer on the surface of the molten gold.
www.goldandsilvermines.com /abtgold.htm   (1702 words)

  
 Colloidal   (Site not responding. Last check: 2007-10-09)
The Auric Field in the paintings of the Ascended masters in history refer to "The Shining Ones".
In the past Gold Chloride (Auric Trichloride) has been used in injections as a treatment for severe Arthritis.
Colloidal Gold seems to have certain effects in the relief of pain and stiffness caused by rheumatoid arthritis, but does not appear to reduce the pain of the Osteo-type of Arthritis where there are calcification of the cartilage in the joins.
www.jananda.net /colloidal.htm   (1052 words)

  
 Gold - Printer-friendly - MSN Encarta   (Site not responding. Last check: 2007-10-09)
Gold is also used in the form of gold leaf in the arts of gilding and lettering.
Purple of Cassius, a precipitate of finely divided gold and stannic hydroxide formed by the interaction of auric chloride and stannous chloride, is used in coloring ruby glass.
Chlorauric acid is used in photography for toning silver images.
encarta.msn.com /text_761570498___4/Gold.html   (236 words)

  
 U.S. Patent: 5731457 - Vinyl acetate process utilizing a palladium-gold-copper catalyst - March 24, 1998
Any of various methods for accomplishing this purpose may be used, all of which involve simultaneous or separate impregnations of the support with one or more aqueous solutions of water-soluble compounds of copper, palladium and/or gold.
An alkali metal salt of tetrachloroauric (III) acid, sodium palladium (II) chloride and cupric nitrate trihydrate or cupric chloride are preferred salts for impregnation because of their good water solubility.
As mentioned above, any method known to those of skill in the art may be employed for the impregnation of palladium, gold or copper onto the support.
www.everypatent.com /comp/pat5731457.html   (2342 words)

  
 Gold - MSN Encarta
It will, however, dissolve in aqueous mixtures containing various halogens such as chlorides, bromides, or some iodides.
It will also dissolve in some oxidizing mixtures, such as cyanide ion with oxygen, and in aqua regia, a mixture of hydrochloric and nitric acids.
The chlorides and cyanides are important compounds of gold.
encarta.msn.com /encyclopedia_761570498/Gold.html   (645 words)

  
 New Jersey Scuba Diver - Artifacts & Shipwrecks - Miscellaneous Metals
Other zinc compounds include zinc chloride, used as a wood preservative, in soldering fluxes, as a mordant in dyeing textiles, and in adhesives and cements; and zinc sulfide, used in making lithopone as well as television screens and X-ray apparatus.
Industrially useful compounds of tin include stannous chloride, important as a reducing agent, as a mordant in dyeing, and for weighting silk; stannic chloride, for the last two purposes and to stabilize perfume and color in soap; stannic oxide, for the preparation of white porcelain enamelware; and sodium stannite, a reducing agent.
Silver chloride, bromide, and iodide are used in still photography because of their sensitivity to light.
www.njscuba.net /artifacts/matl_misc_metal.html   (4540 words)

  
 Mining Interactive--Fundamental Properties
It is metallic, having a yellow color when in a mass, but when finely divided it may be fl, ruby, or purple.
The Purple of Cassius is a delicate test for auric gold.
The most common gold compounds are auric chloride and chlorauric acid, the latter being used in photography for toning the silver image.
www.mininginteractive.com /FAQ/gold-fundamental-properties.htm   (611 words)

  
 Chrysotype
He added phosphorous to a solution of gold chloride and after a short time noted that the blue colouration changed to a ruby red dispersion.
Part A of the sensitiser is the gold component and is made by taking a 0.9M solution (35.4%) of gold chloride and adding to it slowly and equal amount of 0.9M sodium hydroxide (3.6%) Part B is the ligand, and is in a 1.25M strength.
For gold chloride supplied by Johnson Mathey in 1g-glass tubes: - add 3 ml of distilled water with a new 1-ml syringe directly to the opened tube.
unblinkingeye.com /Articles/Gold/gold.html   (1746 words)

  
 Phosphine (PIM 865)
Phosphine can be detected by filter paper impregnated with a mixture of silver nitrate and mercuric chloride.
Phosphine can be detected by filter papers impregnated with a mixture of silver nitrate and mercury (II) chloride.
Filter papers impregnated with a mixture of silver nitrate and mercury (II) chloride which detect phosphine can be made semi-quantitatively by appropriate configuration and measurement for stain length of colour comparison.
www.inchem.org /documents/pims/chemical/pim865.htm   (8602 words)

  
 Ancient Recipes and Modern Chemistry - Numericana
Nitrosyl chloride and chlorine fumes are evolved upon mixing:
The combination of gold trichloride with the chloride of another metal is called an aurochloride, aurichloride, chloraurate or [preferably] chloroaurate.
Gold hydrazide (also known as aurodiamine) is a water-soluble substance obtained by letting an ammoniacal solution react with an auric hydroxide precipitate (itself obtained from a gold solution prepared with aqua regia).
home.att.net /~numericana/answer/chemistry.htm   (2980 words)

  
 OEDILF - Word Lookup
Gold is capable of donating either one or three electrons.
Accordingly, it may be found combined with another given element in two distinct compounds—for instance, aurous chloride (AuCl) and auric chloride (AuCl
The information on this page may not be reproduced in any form without written permission by the.
www.oedilf.com /db/Lim.php?Word=auric   (184 words)

  
 Single-Step Synthesis of Gold/Porous Silica Nanocomposite Materials   (Site not responding. Last check: 2007-10-09)
This system is chosen because of its ability to manipulate the underlying viscosity of the precursor phase, helping to immobilize the particles once they are produced.
Changing the aqueous content as well as the auric chloride concentration has a distinct effect on the morphology and size of the resulting gold particles, as well as their dispersion in the porous silica matrix.
Additional experiments where hydrophobically modified gold nanoparticles are formed in a single step in situ experiment are described.
aiche.confex.com /aiche/2005/techprogram/P25765.HTM   (264 words)

  
 [No title]
Reactions with the incompatibles give explosive or fulminating gold.
Thermal decomposition may release toxic and corrosive gases of hydrogen chloride.
System reactions to gold compounds include effects on bone marrow, liver, kidneys, and CNS (central nervous system).
www.vetmed.iastate.edu /departments/bms/SOP/GH/Gold_Chloride_Tri.doc   (371 words)

  
 Gold Chloride, Trihydrate, Crystal
Synonyms: Tetrachloroauric Acid, Trihydrate; Chloroauric Acid, Trihydrate; Hydrogen Tetrachloroaurate, Trihydrate; Auric Chloride, Hydrochloride, Trihydrate
Stable under ordinary conditions of use and storage.
May form chloride, hydrogen chloride, and metallic gold when heated to decomposition.
www.jtbaker.com /msds/englishhtml/g7874.htm   (893 words)

  
 gold
The price of gold on the free market reached a price of $620/ troy oz.
The most common gold compounds are auric chloride (AuCl3) and chlorauric acid (HAuCl4), the latter being used in photography for toning the silver image.
Gold has forty six recognized isotopes and isomers; 198Au, with a half-life of 2.7 days, is used for treating cancer and other diseases.
www.speclab.com /elements/gold.htm   (905 words)

  
 Chemical Toxicity Studies for Auric chloride, Hydrochloride on All Organism Groups Chemical Toxicity Studies
Chemical Toxicity Studies for Auric chloride, Hydrochloride on All Organism Groups Chemical Toxicity Studies
Home > Chemical Search > Auric chloride, Hydrochloride Information
Toxicity Studies for Auric chloride, Hydrochloride on All Organism Groups - Toxicology studies from the primary scientific literature on aquatic organisms
www.pesticideinfo.org /List_AquireAll.jsp?Rec_Id=AQ6254   (130 words)

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