• Hydrogen sulfide attack and corrosion of copper electrical

    Hydrogen sulfide attack and corrosion of copper 2003 Q We have electrical equipment exposed to low levels of hydrogen sulfide at a waste treatment plant Tin and Silver plating of copper components have been suggested to protect the copper Do you have any experience suggestion regarding which material is the more suitable? Richard A Mulcahy

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  • Causes of Corrosion and Corrosion Monitoring Purafil

    The corrosion reported from reactivity monitoring with CCCs is the sum of individual corrosion films For copper coupons sulfide and oxide films are most commonly produced and are reported as copper sulfide (Cu 2 S) and copper oxide (Cu 2 O) respectively

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  • Whats the formula for copper(II) sulfate + ammonium

    Jun 01 2008· Whats the formula for copper(II) sulfate + ammonium sulfide copper(II) sulfide + ammonium sulfate? Follow 4 answers 4 Report Abuse Are you sure you want to delete this answer? Yes No copper(II) sulfate CuSO4 ammonium sulfide (NH4)2S (available as an aqueous solution)

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  • Ammonium persulfate Wikipedia

    Ammonium persulfate (APS) is the inorganic compound with the formula (NH 4) 2 S 2 O 8It is a colourless (white) salt that is highly soluble in water much more so than the related potassium salt It is a strong oxidizing agent that is used in polymer chemistry as an etchant and as a cleaning and bleaching agent The dissolution of the salt in water is an endothermic process

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  • Is copper suitable in ammonia system? ResearchGate

    Copper is not usually used in ammonia system because with the presence of water ammonia becomes ammonium hydroxide the OH combined with Cu making cupric hydroxide of blue color

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  • Copperorg C28000 Alloy

    Affected by pollutants and other environmental factors Hydrogen sulfide causes rapid tarnishing Sulfur dioxide nitrogen oxides and ammonia may cause stress corrosion cracking Atmosphere Marine Good Protective green basic copper chloride or carbonate patina Sulfur dioxide nitrogen oxides and ammonia may cause stress corrosion cracking

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  • What is the Equation for copper sulfate and ammonium sulfide

    Copper sulfate (II) CuSO4 is blue; ammonia is a colorless gas If you mix ammonia water and copper sulfate solution you will actually form a Brilliant blue copper ammonium complex that is very

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  • Copper Ammonia Complex | Chemdemos

    When concentrated ammonia solution (ammonium hydroxide) is added to a clear light blue aqueous solution of copper(II) chloride a powdery light blue precipitate of copper(II) hydroxide forms Further addition of ammonia causes the copper ion to go back into solution as a deep blue ammonia complex

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  • What Does Copper Patina Mean? The Balance

    May 13 2018· Continued exposure to sulfurs and converts the sulfide films to copper sulfate which is a distinctive blue in color In saline or maritime environments the surface patina may also contain copper chloride which is a shade of green

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  • Corrosion of copper nickel alloys in sea water polluted

    Corrosion rates were monitored for over 24 hours using linear polarization and potential step techniqu The work has shown that copper nickel alloys can corrode quite rapidly in deaerated sea water if these normally passive alloys are made active by the presence of sulfide

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  • Chemical Resistance of Polypropylene and Polyethylene

    Ammonium Sulfate 180 Ammonium Sulfide 180 Amyl Acetate NR Amyl Chloride NR Aniline 150 the chemical resistance of polypropylene and polyethylene is considered superior to that of met Copper Chloride 150 Copper Cyanide 150 Copper Fluoride 150 Copper Nitrate 150

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  • Copperorg C36000 Alloy

    Affected by pollutants and other environmental factors Hydrogen sulfide causes rapid tarnishing Sulfur dioxide nitrogen oxides and ammonia may cause stress corrosion cracking Atmosphere Marine Good Protective green basic copper chloride or carbonate patina Sulfur dioxide nitrogen oxides and ammonia may cause stress corrosion cracking

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  • Copper Corrosion an overview | ScienceDirect Topics

    As an example copper corrosion causes difficulties due to the deterioration of copper and copper alloy fittings and connections commonly used in liquefied petroleum gas systems As little as 1 ppm of hydrogen sulfide can cause a copper strip test failure Thus the copper strip corrosion test is an extremely sensitive test that will detect

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  • Whats the formula for copper(II) sulfate + ammonium

    Jun 01 2008· Whats the formula for copper(II) sulfate + ammonium sulfide copper(II) sulfide + ammonium sulfate? Follow 4 answers 4 Report Abuse Are you sure you want to delete this answer? Yes No copper(II) sulfate CuSO4 ammonium sulfide (NH4)2S (available as an aqueous solution)

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  • What Does Copper Patina Mean? The Balance

    May 13 2018· Continued exposure to sulfurs and converts the sulfide films to copper sulfate which is a distinctive blue in color In saline or maritime environments the surface patina may also contain copper chloride which is a shade of green

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  • Aluminum Chemical Compatibility Chart from ISM

    Aluminum Chemical Compatibility Chart ver 07 Jan 2018 Industrial Specialties Mfg industrialspe Key to General Chemical Resistance [all data based on 72 ° (22 °C) ] A = Excellent C = Fair Moderate Effect not recommended B= Good Minor Effect slight corrosion or discoloration D = Severe Effect not recommended for ANY use

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  • 316L Stainless Steel Chemical Compatibility Chart from ISM

    Ammonium Sulfide A Ammonium Sulfite B Ammonium Thiocyanate A Ammonium Thiosulfate A Amyl Acetate A Minor Effect slight corrosion or discoloration D = Severe Effect not recommended for ANY use Copper Ammonium Acetate A Copper Carbonate A Copper Chloride D Copper Cyanide B

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  • Ammonium sulfide Simple English Wikipedia the free

    Ammonium sulfide also known as the "stink bomb" is made up of a solution of ammonium sulfide in water sealed inside a glass ampoule (a small bottle like container used to store a liquid securely) When the ampoule is broken ammonia and hydrogen sulfide gases are released from the solution These chemicals have a very strong and unpleasant smell

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  • Silver Conservation Conservation Manual Conservation

    A solution of 15 percent ammonium thiosulfate in distilled water with a 1 percent non ionic wetting agent is stronger than the silver dip and is effective for removing both tarnish and silver chloride For base silver with copper corrosion compounds concentrated ammonia effectively cleans all copper

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  • Ammonium Bisulfide Corrosion in Hydrotreating Units

    A heavy black layer on the copper would suggest the presence of copper sulfide and the possibility of anaerobic bacteria activity as the cause of corrosion The presence of ammonia in combination with sulfate compounds on the copper surface indicates that the cause of corrosion

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  • Patina Wikipedia

    For copper alloys such as bronze exposure to chlorides leads to green while sulfur compounds (such as "liver of sulfur") tend to brown The basic palette for patinas on copper alloys includes chemicals like ammonium sulfide (blue black) liver of sulfur (brown black) cupric nitrate (blue green) and ferric nitrate (yellow brown) For

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  • Ammonium persulfate Wikipedia

    Ammonium persulfate (APS) is the inorganic compound with the formula (NH 4) 2 S 2 O 8It is a colourless (white) salt that is highly soluble in water much more so than the related potassium salt It is a strong oxidizing agent that is used in polymer chemistry as an etchant and as a cleaning and bleaching agent The dissolution of the salt in water is an endothermic process

    [More]
  • Is CuS ( Copper(II) sulfide ) Soluble or Insoluble in water

    Question Is CuS ( Copper(II) sulfide ) Soluble or Insoluble in water ? Answer CuS ( Copper(II) sulfide ) is Insoluble in water What is Soluble and Insoluble ? Solubility Solubility is the property of a solid liquid or gaseous chemical substance called solute to dissolve in a solid liquid or gaseous solvent

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  • Silver Conservation Conservation Manual Conservation

    A solution of 15 percent ammonium thiosulfate in distilled water with a 1 percent non ionic wetting agent is stronger than the silver dip and is effective for removing both tarnish and silver chloride For base silver with copper corrosion compounds concentrated ammonia effectively cleans all copper

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  • how do you write ammonium sulfide with copper(II) nitrate

    Feb 12 2008· How much heat is released when 1 ammonia molecule reacts? At 25 °C only 00780 mol of the generic salt AB is soluble in 100 L of water What is the Ksp of the salt at 25 °C?

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  • ammonium sulfide corrosion of copper houseebuildingit

    ammonium sulfide corrosion of copper On the effects of common pollutants on the SciTech Connect; Journal Article On the effects of common pollutants on the corrosion of copper nickel alloys in sulfide polluted seawater Contact supplier Public Lab Hydrogen Sulfide Copper Pipe Testing

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