US2586709A - Method for suppressing the corrosion of copper-containing alloys in the presence of ammonium salts - Google Patents
Method for suppressing the corrosion of copper-containing alloys in the presence of ammonium salts Download PDFInfo
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- US2586709A US2586709A US108431A US10843149A US2586709A US 2586709 A US2586709 A US 2586709A US 108431 A US108431 A US 108431A US 10843149 A US10843149 A US 10843149A US 2586709 A US2586709 A US 2586709A
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- Prior art keywords
- copper
- ammonium
- corrosion
- ammonium salts
- solution
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Links
- 150000003863 ammonium salts Chemical class 0.000 title claims description 21
- 230000007797 corrosion Effects 0.000 title claims description 10
- 238000005260 corrosion Methods 0.000 title claims description 10
- 238000000034 method Methods 0.000 title claims description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title description 13
- 229910052802 copper Inorganic materials 0.000 title description 13
- 239000010949 copper Substances 0.000 title description 13
- 229910045601 alloy Inorganic materials 0.000 title description 8
- 239000000956 alloy Substances 0.000 title description 8
- 239000003208 petroleum Substances 0.000 claims description 12
- -1 ALKALI METAL SALT Chemical class 0.000 claims description 8
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 claims description 7
- 229910052783 alkali metal Inorganic materials 0.000 claims description 5
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 4
- 239000011701 zinc Substances 0.000 claims description 4
- 229910052725 zinc Inorganic materials 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 2
- 239000001301 oxygen Substances 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- XLYOFNOQVPJJNP-PWCQTSIFSA-N Tritiated water Chemical compound [3H]O[3H] XLYOFNOQVPJJNP-PWCQTSIFSA-N 0.000 claims 1
- 239000000243 solution Substances 0.000 description 14
- 239000003921 oil Substances 0.000 description 13
- 229910000881 Cu alloy Inorganic materials 0.000 description 11
- 239000012266 salt solution Substances 0.000 description 9
- 150000003460 sulfonic acids Chemical class 0.000 description 9
- 241000158728 Meliaceae Species 0.000 description 7
- 239000002253 acid Substances 0.000 description 7
- 239000007864 aqueous solution Substances 0.000 description 7
- 229910052708 sodium Inorganic materials 0.000 description 7
- 239000011734 sodium Substances 0.000 description 7
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 7
- 150000007513 acids Chemical class 0.000 description 6
- 150000003839 salts Chemical class 0.000 description 6
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 5
- 239000000284 extract Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- USFZMSVCRYTOJT-UHFFFAOYSA-N Ammonium acetate Chemical compound N.CC(O)=O USFZMSVCRYTOJT-UHFFFAOYSA-N 0.000 description 2
- 239000005695 Ammonium acetate Substances 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
- 229940043376 ammonium acetate Drugs 0.000 description 2
- 235000019257 ammonium acetate Nutrition 0.000 description 2
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 2
- 229940044197 ammonium sulfate Drugs 0.000 description 2
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 2
- 235000011130 ammonium sulphate Nutrition 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- HYBBIBNJHNGZAN-UHFFFAOYSA-N furfural Chemical compound O=CC1=CC=CO1 HYBBIBNJHNGZAN-UHFFFAOYSA-N 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000000638 solvent extraction Methods 0.000 description 2
- JSLISSGEILAIOU-UHFFFAOYSA-N (4-chloro-2-iodophenyl)hydrazine Chemical compound NNC1=CC=C(Cl)C=C1I JSLISSGEILAIOU-UHFFFAOYSA-N 0.000 description 1
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 239000004254 Ammonium phosphate Substances 0.000 description 1
- AYWWZVJMILKXMO-UHFFFAOYSA-N Averythrin Natural products CCCCC=Cc1cc2C(=O)c3c(O)cc(O)cc3C(=O)c2cc1O AYWWZVJMILKXMO-UHFFFAOYSA-N 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 229910001128 Sn alloy Inorganic materials 0.000 description 1
- 229910001297 Zn alloy Inorganic materials 0.000 description 1
- 239000001099 ammonium carbonate Substances 0.000 description 1
- 235000012501 ammonium carbonate Nutrition 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- 239000000908 ammonium hydroxide Substances 0.000 description 1
- 229910000148 ammonium phosphate Inorganic materials 0.000 description 1
- 235000019289 ammonium phosphates Nutrition 0.000 description 1
- 229940039409 ammonium valerate Drugs 0.000 description 1
- XJMWHXZUIGHOBA-UHFFFAOYSA-N azane;propanoic acid Chemical compound N.CCC(O)=O XJMWHXZUIGHOBA-UHFFFAOYSA-N 0.000 description 1
- YNTQKXBRXYIAHM-UHFFFAOYSA-N azanium;butanoate Chemical compound [NH4+].CCCC([O-])=O YNTQKXBRXYIAHM-UHFFFAOYSA-N 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- ZURAKLKIKYCUJU-UHFFFAOYSA-N copper;azane Chemical compound N.[Cu+2] ZURAKLKIKYCUJU-UHFFFAOYSA-N 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 125000000753 cycloalkyl group Chemical group 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- FUZZWVXGSFPDMH-UHFFFAOYSA-M hexanoate Chemical compound CCCCCC([O-])=O FUZZWVXGSFPDMH-UHFFFAOYSA-M 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 159000000001 potassium salts Chemical class 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000011135 tin Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
- C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
- C23F11/10—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using organic inhibitors
- C23F11/16—Sulfur-containing compounds
- C23F11/163—Sulfonic acids
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S71/00—Chemistry: fertilizers
- Y10S71/04—Anti-corrosion
Definitions
- 2 Claims. 1 c1. 2s 50 This invention is directed to a method for sup-,- pressing the corrosion of copper-containing alloys in the presence of ammonium salts. Specifically, it is directed to the prevention of corrosion of copper alloys in aqueous solutions. containing ammonium salts.
- the main object of the present invention to provide a process whereby the deterioration of copper alloys in the presence of 2 aqueous solutions of ammonium salts is substantially eliminated.
- Anotherv object of the invention is to provide a method whereby copper alloys may be employed in services where they are exposed to ammonium salt solutions.
- the objects of the present invention are achieved by maintaining in corrosive ammonium salt solutions in contact with copper and its alloys a corrosion inhibiting amount of a salt of a petroleum sulfonic acid.
- the present invention involves the ad-: dition to "corrosive ammonium salt solutions in contact with copper bearing metals of a quantity of"-a salt of an oil soluble petroleum sulfonic acid, such as an alkali metal salt of mahogany sulfonic acid, in the range between 0.001% to 5% by weight, based on the ammonium salt solution.
- My invention is applicable to aqueous solutions of ammonium salts of inorganic acids, such as ammoniumsulfate, ammonium halide, ammonium carbonate, ammonium phosphate, etc., as well as to aqueous solutions of ammonium salts of organic acids, such as ammonium acetate, ammonium propionate, ammonium butyrate, ammonium valerate, ammonium caproate, etc.
- inorganic acids such as ammoniumsulfate, ammonium halide, ammonium carbonate, ammonium phosphate, etc.
- aqueous solutions of ammonium salts of organic acids such as ammonium acetate, ammonium propionate, ammonium butyrate, ammonium valerate, ammonium caproate, etc.
- the salts of 1 oil soluble petroleum sulfonic acid which are suitable for use in the practice of the present invention are the alkali metal salts of mahogany .s'ulfoni'c acids, such as the lithium, sodium, or potassium salts.
- the ammonium salts of mahogany sulfonic acids are also eminently suitable in the practice of the present invention.
- the oil soluble petroleum sulfonic acids which are employed to produce the salts used in the present invention may be obtained in a manner Well known to the art.
- the production of mahogany sulfonic acids has been disclosed widely in patent literature. It may be mentioned, however, that a conventional method for preparing these acids involves the treatment with concentrated sulfuric acid of a feed stock. comprising a substantial portion of unsaturated cyclic hydrocarbons.
- a feed stock comprising a substantial portion of unsaturated cyclic hydrocarbons.
- Exemplary of the type of feed stocks which may be used are the solvent extracts resulting from solvent extraction of a distillate boiling in the lubricating oil boiling range, such as, for example, a phenol extract.
- the extract layer upon treatment with strong sulfuric acid results in the formation of a layer comprising oil and 0 oil soluble sulfonic acids or mahogany acids, and a second layer comprising sludge particles and water soluble sulfonic acids. These two layers are then separated under the influence of gravity and the oil layer, including mahogany acids, is treated with successive portions of water to obtain the predominately oil soluble sulfonic acids.
- oil soluble sulfonic acids may be freed of water and then converted into the corresponding salts by addition of a suitable hydroxide, such as sodium hydroxide" or ammonium hydroxide.
- a distillate obtained from a naphthenic crude oil may be solvent extracted with a solvent having the characteristics.
- An advantage of the process of thepresent invention irrespective of the prevention of-core rosion of copper and its alloys, is the ability to use existing equipment in which copper and its alloys are present'in processes involving the use of ammonium salt solutions.
- a method for reducing the corrosive action of a corrosive solution including water, oxygen, and ammonium salt to an article having a corrodible surface consisting predominantly of copper with minor amounts of tin and zinc in contact with said solution which comprises introducing into said solution an amount of an alkali metal salt of an oil soluble petroleum sulfonic acid suificientto inhibit the corrosion thereof.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Description
Patented Feb. 19, 1952 METHOD FOR SUPPRESSING THE CORRO- SION OF COPPER-CONTAINING ALLOYS IN THE PRESENCE OF AMMONIUBI SALTS Cecil Phillips, Jr., Baytown, Tex., assignor, by
mesne assignments, to Standard Oil Development Company, Elizabeth, N. J., a corporation of Delaware No Drawing. Applicatlon'August 3, 1949, Serial No. 108,431
2 Claims. 1 c1. 2s 50 This invention is directed to a method for sup-,- pressing the corrosion of copper-containing alloys in the presence of ammonium salts. Specifically, it is directed to the prevention of corrosion of copper alloys in aqueous solutions. containing ammonium salts.
The present application is a continuation-inpart of my 'copending application Serial No. 756,112, now Patent No. 2,577,626.
In many operations it is often desirable to use various types of equipment (tanks, heat exchanger and condenser tubes, valves, lines, etc.) constructed of or containing copper alloys for handling solutions containin ammonium salts. Such equipment usually suffers from severe corrosion of the copper alloys due to the chemical dissolution of the copper. The rapid destruction of the copper alloys in contact with solutions containing ammonium salts is believed to be due to the formation of highly soluble copper-ammonium complex ions.
As a result of the corrosive action of ammonium salt solutions on copper, the employers of these solutions, such as the petroleum refiner, must exercise extreme care in selection of. suitable alloys for his processing equipment. Thus, where these solutions are to be used, copper alloys are usually avoided. However, as mentioned before, various services require the use of copper alloys on account of other corrosive fluids being encountered. Thus, the corrosive action of carbon dioxide in steam makes nearly mandatory the employment of copper alloys such as an alloy of copper, zinc, and tin in heat exchange equipment using corrosive steam as the heat transfer medium. Thus, when solutions of ammonium salts are employed in this type of equipment, rapid attack of the copper alloy may he suffered. Ammonium salt solutions are also widely used in solvent extraction of hydrocarbons. Here again the petroleum refiner must guard against allowing the solutions to contact copper-bearing surfaces. The aforementioned corrosion reaction generally occurs at atmospheric temperature and pressure. It is believed that higher temperatures and pressures may accelerate this reaction.
It is, therefore, the main object of the present invention to provide a process whereby the deterioration of copper alloys in the presence of 2 aqueous solutions of ammonium salts is substantially eliminated.
Anotherv object of the invention is to provide a method whereby copper alloys may be employed in services where they are exposed to ammonium salt solutions.
The objects of the present invention are achieved by maintaining in corrosive ammonium salt solutions in contact with copper and its alloys a corrosion inhibiting amount of a salt of a petroleum sulfonic acid.
. Briefly, the present invention involves the ad-: dition to "corrosive ammonium salt solutions in contact with copper bearing metals of a quantity of"-a salt of an oil soluble petroleum sulfonic acid, such as an alkali metal salt of mahogany sulfonic acid, in the range between 0.001% to 5% by weight, based on the ammonium salt solution. My invention is applicable to aqueous solutions of ammonium salts of inorganic acids, such as ammoniumsulfate, ammonium halide, ammonium carbonate, ammonium phosphate, etc., as well as to aqueous solutions of ammonium salts of organic acids, such as ammonium acetate, ammonium propionate, ammonium butyrate, ammonium valerate, ammonium caproate, etc.
The salts of 1 oil soluble petroleum sulfonic acid which are suitable for use in the practice of the present invention are the alkali metal salts of mahogany .s'ulfoni'c acids, such as the lithium, sodium, or potassium salts. The ammonium salts of mahogany sulfonic acids are also eminently suitable in the practice of the present invention.
The oil soluble petroleum sulfonic acids which are employed to produce the salts used in the present invention may be obtained in a manner Well known to the art. The production of mahogany sulfonic acids has been disclosed widely in patent literature. It may be mentioned, however, that a conventional method for preparing these acids involves the treatment with concentrated sulfuric acid of a feed stock. comprising a substantial portion of unsaturated cyclic hydrocarbons. Exemplary of the type of feed stocks which may be used are the solvent extracts resulting from solvent extraction of a distillate boiling in the lubricating oil boiling range, such as, for example, a phenol extract. The extract layer, upon treatment with strong sulfuric acid results in the formation of a layer comprising oil and 0 oil soluble sulfonic acids or mahogany acids, and a second layer comprising sludge particles and water soluble sulfonic acids. These two layers are then separated under the influence of gravity and the oil layer, including mahogany acids, is treated with successive portions of water to obtain the predominately oil soluble sulfonic acids. These oil soluble sulfonic acids may be freed of water and then converted into the corresponding salts by addition of a suitable hydroxide, such as sodium hydroxide" or ammonium hydroxide. As a specific example, a distillate obtained from a naphthenic crude oil may be solvent extracted with a solvent having the characteristics. of furfural or phenol and the extract brought in contact with sulfuric acid of approximately 98% concentration. Upon contacting the concentrated sulfuric acid with the petroleum extract, sulfonic acids are formed. The mahogany'acids remain in the oil phase which separates from the acid phase.
In applying the concentrated sulfuric acid, it
is customary to divide the total amount employed monium salt solutions' is not understood, but it v is believed to be due to the formationof avery thin protective film on the metal. It is understood, of course, that I' do not wish to bind myself to any'theory offered as an explanation of the beneficial effect.
An advantage of the process of thepresent invention, irrespective of the prevention of-core rosion of copper and its alloys, is the ability to use existing equipment in which copper and its alloys are present'in processes involving the use of ammonium salt solutions.
In order to illustrate the beneficial effects'of this invention, specimens of copper-containing metal (70% copper, 29% zinc, and 1% tin) were immersed in aqueous solutions of three different ammonium salts. These tests werein progress for 24 hours at room temperature and atmospheric pressure. Air was bubbled through the solutions throughout the tests. These testswere repeated under identical conditions with small amounts'of sodium sulfonates of oil soluble petroleum'sultonic acids of the type illustrated added to the aqueous solutions. The results obtained in these tests are shown in the following table:
Corrosion Ammonium Per Cent Salt Solution Inhibitor Added i ggfi Reduction None 0.06297 mwa {0. 25% Sodium Sulionatci. 0. 0009s as. 4 0.5% Sodium Sulfonates..- 0.00096 98.5 Ammonium {None 0.06991 Sulfatc,5%.. Sodium Suiionates 99 0 one 6 33333 3 0. 25% Sodium Sulionates 0. 01654 19. 0 0.5% Sodium Sultonatcs... 0 01458 29.1
It will be observed from the data presented in the foregoing table that the addition of small amounts of sodium salts of petroleum sulfonic acids efi'ects marked reductions in the tendencies of aqueous solutions of ammonium salts to corrode copper-containing alloys. While the reduction in the corrosivity of the ammonium acetate solution and the ammonium sulfate solution is particularly marked, the corrosivity of the ammonium chloride solution is also material.
The nature and objects of the present invention having been fully described and illustrated, what I'wish to claim as new and useful and to secure by Letters Patent is:
1. A method for reducing the corrosive action of a corrosive solution including water, oxygen, and ammonium salt to an article having a corrodible surface consisting predominantly of copper with minor amounts of tin and zinc in contact with said solution which comprises introducing into said solution an amount of an alkali metal salt of an oil soluble petroleum sulfonic acid suificientto inhibit the corrosion thereof.
2. A method in accordance with claim 1 in which the amount of said alkali metal salt of an oil soluble petroleum sulfonic acid is in the range'between 0.001% and 5% by weight of the corrosive solution.
CECIL PHILLIPS, JR.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 1,630,101 Wilkin May 24, 1927 2,220,059 Beekhuis et a1 Nov. 5, 1940 2,238,651 Keenen Apr. 15, 1941 2,412,633 Schwartz Dec. 17, 1946 2,455,659 Duncan Dec. 7, 1948
Claims (1)
1. A METHOD FOR REDUCING THE CORROSIVE ACTION OF A CORROSIVE SOLUTION INCLUDING WATER, OXYGEN, AND AMMONIUM SALT TO AN ARTICLE HAVING A CORRODIBLE SURFACE CONSISTING PREDOMINANTLY OF COPPER WITH MINOR AMOUNTS OF TIN AND ZINC IN CONTACT WITH SAID SOLUTION WHICH COMPRISES INTRODUCING INTO SAID SOLUTION AN AMOUNT OF AN ALKALI METAL SALT OF AN OIL SOLUBLE PETROLEUM SULFONIC ACID SUFFICIENT TO INHIBIT THE CORROSION THEREOF.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US108431A US2586709A (en) | 1949-08-03 | 1949-08-03 | Method for suppressing the corrosion of copper-containing alloys in the presence of ammonium salts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US108431A US2586709A (en) | 1949-08-03 | 1949-08-03 | Method for suppressing the corrosion of copper-containing alloys in the presence of ammonium salts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2586709A true US2586709A (en) | 1952-02-19 |
Family
ID=22322142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US108431A Expired - Lifetime US2586709A (en) | 1949-08-03 | 1949-08-03 | Method for suppressing the corrosion of copper-containing alloys in the presence of ammonium salts |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2586709A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3024100A (en) * | 1957-05-20 | 1962-03-06 | Monsanto Chemicals | Corrosion-inhibited liquid fertilizer compositions |
| US3024099A (en) * | 1957-05-20 | 1962-03-06 | Monsanto Chemicals | Corrosion-inhibited liquid fertilizer compositions |
| US3037842A (en) * | 1960-02-17 | 1962-06-05 | Dow Chemical Co | Ammonium bromide composition |
| US3116185A (en) * | 1960-08-18 | 1963-12-31 | Phillips Petroleum Co | Method of reducing the caking of nitrogen-containing compound |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1630101A (en) * | 1925-03-13 | 1927-05-24 | Standard Oil Co | Rustproofing oil |
| US2220059A (en) * | 1938-06-13 | 1940-11-05 | Solvay Process Co | Process for reducing corrosion by ammoniacal solutions of inorganic salts and new composition of reduced corrosiveness |
| US2238651A (en) * | 1937-05-21 | 1941-04-15 | Du Pont | Inhibition of corrosion |
| US2412633A (en) * | 1944-07-20 | 1946-12-17 | Standard Oil Co | Lubricants |
| US2455659A (en) * | 1945-10-05 | 1948-12-07 | Standard Oil Dev Co | Oily composition |
-
1949
- 1949-08-03 US US108431A patent/US2586709A/en not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1630101A (en) * | 1925-03-13 | 1927-05-24 | Standard Oil Co | Rustproofing oil |
| US2238651A (en) * | 1937-05-21 | 1941-04-15 | Du Pont | Inhibition of corrosion |
| US2220059A (en) * | 1938-06-13 | 1940-11-05 | Solvay Process Co | Process for reducing corrosion by ammoniacal solutions of inorganic salts and new composition of reduced corrosiveness |
| US2412633A (en) * | 1944-07-20 | 1946-12-17 | Standard Oil Co | Lubricants |
| US2455659A (en) * | 1945-10-05 | 1948-12-07 | Standard Oil Dev Co | Oily composition |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3024100A (en) * | 1957-05-20 | 1962-03-06 | Monsanto Chemicals | Corrosion-inhibited liquid fertilizer compositions |
| US3024099A (en) * | 1957-05-20 | 1962-03-06 | Monsanto Chemicals | Corrosion-inhibited liquid fertilizer compositions |
| US3037842A (en) * | 1960-02-17 | 1962-06-05 | Dow Chemical Co | Ammonium bromide composition |
| US3116185A (en) * | 1960-08-18 | 1963-12-31 | Phillips Petroleum Co | Method of reducing the caking of nitrogen-containing compound |
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