ammonium sulfide corrosion of copper

Corrosion inhibitors may be used to control corrosion in overhead systems 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 virtually all species of corrosive sulfur

The presence of ammonia in combination with sulfate compounds on the copper surface indicates that the cause of corrosion could be lawn fertilizer Corrosion of underground copper can be either uniform or localized figure below

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

Nov 24 2017 · It depends on the concentration of the ammonia Initially the ammonia will react with water to produce ammonium ions and hydroxide ions While this is happening copper hydroxide will precipitate out of solution leaving ammonium sulfate in solution During this stage youll see a slimy light blue precipitate

Ammonium sulfide aqueous solution is a colorless to yellow liquid with an odor of rotten eggs or ammonia Material in aqueous from the hydrosulfide which with acid forms H2S It may be irritating to skin eyes and mucous membranes and may cause illness from skin absorption It may burn andor emit toxic fumes if heated to high temperatures

Alternatively small objects may be immersed in the ammonium polysulfide copper sulfate solutions Potassium Sulfide Process One gallon of 15 sharp water 2 oz oxalic acid in 1 gallon tap water Fine beach sand Potassium sulfide liver of sulfur mixed in tap water 14 lb liver of

Ammonium bisulfide corrosion of reactor effluent air coolers REAC and stripper overhead is a reliability issue for the refining industry This type of corrosion has already resulted in major equipment failures fires and explosions Organic sulfur and nitrogen compounds are converted to hydrogen sulfide and ammonia in hydrotreater reactors

The design curve shows where ammonium bisulfide salts are predicted to form based on partial pressures of ammonia and hydrogen sulfide The curve shows that ammonium bisulfide salts should not be a concern above 190F 88C Velocity is also a factor in ammonium bisulfide corrosion and limiting rates above which corrosion can be a problem have

Classify copper as being a “noble” or “active” metal • Explore the impact of other components particularly sulfide ion ammonia and chloride ion on the “activity” of copper • Comment on the range of sulfur species that may exist in ground water environments • Sulfur species are considered to be a major threat to the

Electrochemical Behaviour of a Copper Electrode in Ammonium Sulfide Solution Umm AlQura University Makkah AlMukaramhaSaudia Aabia Abstract The electrochemical behaviour of a copper electrode in ammonium sulphide solutions was studied using cyclic voltammogrammetry and potentiostatic and galvanostatic polarization techniques

Sep 12 2019 · Copper corrosion occurs at negligible rates in unpolluted air water and deaerated nonoxidizing acids However it is susceptible to more rapid attack in oxidizing acids oxidizing heavymetal salts sulfur ammonia and some sulfur and ammonia compounds

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

Coppersilicon alloys C 64700 C66100 C 87300 C 87900 generally have the same corrosion resistance as copper but they have higher mechanical properties and superior weldability These alloys appear to be much more resistant to SCC than the common brasses

112 Stress corrosion crackin SCC mechanisms Most of the SCC failure mechanisms for copperbased alloys have been predominantly investigated for ammoniabrass systems Pugh et al 1969 Pugh 1971Two failure mechanisms that have found wide acceptance on SCC of copperbased alloys are a the passivefilm rupture and transient dissolution theory also referred to as filmrupture theory

Ammonium Sulfide B Ammonium Sulfite D Ammonium Thiocyanate C Ammonium Thiosulfate A Amyl Acetate banana oil B Aluminum Chemical Compatibility Chart ver 07Jan2018 Copper Acetate D Copper Carbonate D Copper Chloride D Copper Cyanide D

Feb 12 2008 · NH42S CuNO32 To do a double replacement NH42S CuNO32 2 NH4NO3 CuS 0 0 0 Login to reply the answers Post

Which materials are more resistant to ammonium bisulfide Corrosion 300 Series SS Duplex Aluminum alloys and Nickel based alloys However their resistance is dependent on the concentration of ammonium bisulfide and velocity

The corrosion data in this section is mainly based on the results of general corrosion laboratory tests which are not strictly comparable with actual service corrosion tables provide an initial guide to the selection of materials and are intended to facilitate understanding of the different types of corrosion damage that can arise due to poor material selection

CHEMICAL RESISTANCE CHART RATINGS CHEMICAL EFFECT A No effectExcellent Ammonia 10 AA D B Ammonia Anhydrous ABBA DDC Ammonia Liquids ADB BA D Ammonia Nitrate ACD B A Copper Chloride C D B A A Copper Cyanide AD A CB B Copper Fluoborate D B AB A Copper Nitrate B AD A

Ammonium sulfide aqueous solution is a colorless to yellow liquid with an odor of rotten eggs or ammonia Material in aqueous from the hydrosulfide which with acid forms H2S It may be irritating to skin eyes and mucous membranes and may cause illness from skin absorption It may burn andor emit toxic fumes if heated to high temperatures

Electrochemical Behaviour of a Copper Electrode in Ammonium Sulfide Solution Umm AlQura University Makkah AlMukaramhaSaudia Aabia Abstract The electrochemical behaviour of a copper electrode in ammonium sulphide solutions was studied using cyclic voltammogrammetry and potentiostatic and galvanostatic polarization techniques

Nov 01 2015 · In Handbook of Stable Isotope Analytical Techniques 2009 5132 Ammonium sulfate Analysis of ammonium sulfate is also discussed in Chapter 522 by description of the Kjeldahl digestion method by distillation or diffusion extraction and by conversion of ammonium salts eg ammonium sulfate into N 2 gas Since ammonium sulfate was basically an inorganic compound analysis of ammonium

Oct 05 2006 · Scherrer M Durrieu and G Jarno Distillate and Resid Hydroprocessing Coping with High Concentrations of Ammonium Bisulfide in the Process Water Materials Performance Vol 19 11 November 1980 pp 2531 see also Corrosion Paper 79027 NACE 1979

Search term ammonium sulfide Compare Products Select up to 4 products Please select more than one item to compare 20 matches found for ammonium sulfide Advanced Search Structure Search Ammonium sulfide solution 3 Product Results

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

Ammonium Sulfide B Ammonium Sulfite D Ammonium Thiocyanate C Ammonium Thiosulfate A Amyl Acetate banana oil B Aluminum Chemical Compatibility Chart ver 07Jan2018 Copper Acetate D Copper Carbonate D Copper Chloride D Copper Cyanide D

As described in the introduction the initial corrosion rate of new copper pipework is quite high However this quickly falls as a protective patina of copper corrosion products builds up on the bore of the pipe After about a year of service the corrosion rate of copper and its alloys are of the order of 1–10µmyr in fresh

316L Stainless Steel Chemical Compatibility Chart ver 10Jan2020 industrials Key to General Chemical Resistance all data based on 72 ° 22 °C unless noted Explanation of Footnotes 1 – Satisfactory to 120° F 48° C A Excellent – No Effect C Fair Moderate Effect not recommended

CHEMICAL RESISTANCE CHART RATINGS CHEMICAL EFFECT A No effectExcellent Ammonia 10 AA D B Ammonia Anhydrous ABBA DDC Ammonia Liquids ADB BA D Ammonia Nitrate ACD B A Copper Chloride C D B A A Copper Cyanide AD A CB B Copper Fluoborate D B AB A Copper Nitrate B AD A

Answer to Ammonium sulfide is added to a solution of copperII nitrate This is an alternate ISBN View the primary ISBN for Introductory Chemistry 5th Edition Textbook Solutions

We observed the corrosion process that occurs between copper and ammonium sulfate NH42SO4 or sodium sulfate Na2SO4 particles above a critical relative humidity CRH to study copper corrosion

Search results for copper sulphide at SigmaAldrich Compare Products Select up to 4 products Please select more than one item to compare

Sep 26 2019 · Corrosion is usually defined as the degradation of metals due to an chemical processes This involves the formation of a bluegreen patina on the copper surface The formation of the protective layer is a form of passivation which means that the