US3076543A - Ammoniacal ammonium nitrate solution with hydrogen peroxide as corrosion inhibitor - Google Patents
Ammoniacal ammonium nitrate solution with hydrogen peroxide as corrosion inhibitor Download PDFInfo
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- US3076543A US3076543A US765062A US76506258A US3076543A US 3076543 A US3076543 A US 3076543A US 765062 A US765062 A US 765062A US 76506258 A US76506258 A US 76506258A US 3076543 A US3076543 A US 3076543A
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- US
- United States
- Prior art keywords
- ammonium nitrate
- hydrogen peroxide
- corrosion
- composition
- solution
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 title claims description 24
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 title claims description 10
- 238000005260 corrosion Methods 0.000 title description 21
- 230000007797 corrosion Effects 0.000 title description 20
- 239000003112 inhibitor Substances 0.000 title description 6
- 239000000203 mixture Substances 0.000 claims description 24
- 239000000243 solution Substances 0.000 claims description 24
- ZXNIRGPMYQWIJS-UHFFFAOYSA-O azanium azane nitrate Chemical compound [N+](=O)([O-])[O-].[NH4+].N ZXNIRGPMYQWIJS-UHFFFAOYSA-O 0.000 claims description 13
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 10
- 239000000908 ammonium hydroxide Substances 0.000 claims description 7
- 239000007864 aqueous solution Substances 0.000 claims description 4
- 235000011114 ammonium hydroxide Nutrition 0.000 description 9
- 238000012360 testing method Methods 0.000 description 9
- 229910052751 metal Inorganic materials 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 6
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 6
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 5
- 239000011593 sulfur Substances 0.000 description 5
- 229910052717 sulfur Inorganic materials 0.000 description 5
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 4
- 241000196324 Embryophyta Species 0.000 description 3
- 229910002651 NO3 Inorganic materials 0.000 description 3
- 239000000470 constituent Substances 0.000 description 3
- 239000000356 contaminant Substances 0.000 description 3
- 239000003337 fertilizer Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910052979 sodium sulfide Inorganic materials 0.000 description 3
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 description 3
- 238000012956 testing procedure Methods 0.000 description 3
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 2
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 2
- 239000004115 Sodium Silicate Substances 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- SOIFLUNRINLCBN-UHFFFAOYSA-N ammonium thiocyanate Chemical group [NH4+].[S-]C#N SOIFLUNRINLCBN-UHFFFAOYSA-N 0.000 description 2
- WQAQPCDUOCURKW-UHFFFAOYSA-N butanethiol Chemical class CCCCS WQAQPCDUOCURKW-UHFFFAOYSA-N 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- -1 ferrous metals Chemical class 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 2
- 229910052911 sodium silicate Inorganic materials 0.000 description 2
- 235000010265 sodium sulphite Nutrition 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 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 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 241000220317 Rosa Species 0.000 description 1
- 238000005707 Thorpe reaction Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 239000010960 cold rolled steel Substances 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 230000004580 weight loss Effects 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
- C23F11/06—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in markedly alkaline liquids
Definitions
- My invention relates to the corrosion of ferrous metals. .lore specifically, my invention relates to a composition consisting essentially of aqueous ammonia, ammonium nitrate and hydrogen peroxide said composition having reduced corrosion tendencies toward metal surfaces.
- Corrosion inhibitors of one type or another have been suggested and attempted with varying degrees of limited success.
- An example of such an inhibitor is ammonium thiocyanate which has been found to be relatively unsuccessful and thus generally abandoned.
- Sodium silicate, another supposed inhibitor, is ineffective and at times has permitted immediate and rapid corrosive attacks.
- aqueous ammonia-ammonium nitrate solutions in a reasonably pure state is mildly corrosive but in the presence of small amounts of corrosive constituents, i.e. about .05% by weight or more, there is im mediate and rapid attack on ferrous metal surfaces.
- corrosive constituents are normally found in common commercial plants such as fertilizer plants which produce this solution.
- the contaminants are in general at least somewhat soluble sulfur constituents either organic or inorganic. Examples of these are sodium sulfide, sodium suliite, butyl mercaptans and sodium salts of butyl mercaptans.
- my invention 1 have found a new composition consisting essentially of aqueous ammonia-ammonium nitrate solution having hydrogen peroxide incorporated therein.
- My composition has reduced corrosion tendencies towards metal surfaces such as steel.
- the aqueous ammonia-ammonium nitrate solution utilized in my invention can be prepared by the addition of commercial ammonium hydroxide to ammonium nitrate with a subsequent addition or" water.
- the percent of ammonium hydroxide may vary with the desired properties peculiar to each solution.
- the preferred amount of ammonium hydroxide is about 10 to 35% by weight of the final composition.
- the amount of ammonium nitrate in my composition may vary from about 1 to 35% by Weight of the final composition.
- Cornmercial hydrogen peroxide can be utilized in my composition and will usually be about 0.0001 to 3% or more (H 0 basis) of the composition by weight with a preferred amount being about .001 to 0.3% by weight.
- EXAMPLE I A composition containing aqueous ammonia-ammonium nitrate and sodium silicate was tested according to the above and found to be corrosive with an immediate attack of rust on the steel coupons, and after 3 days of exposure, the rate of corrosion of the coupon was measured at 2278 rndd. which corresponds to' a rust penetration of inch in a nine month period. Mdd. is milligrams weight loss per square decimeter of exposed surface per day of exposure.
- EXAMPLE II A composition containing ammonium thiocyanate and the aqueous ammonia-ammonium nitrate solution was tested according to the above and heavy rust on the immersed steel coupons appeared at the end of a 15 week period.
- EXAMPLE 111 Using the above testing procedure, an octadecyl amineaqueous ammonia-ammonium nitrate solution was tested for corrosive tendencies. During an 18 week testing period, heavy rusting occurred thus showing the composition to be inetlective in inhibiting corrosion.
- EXAMPLE IV Similarly a potassium chromate-aqueous ammonia-ammonium nitrate solution was tested and found to be corrosive when in contact with a steel coupon such as described above and medium rust occurred during an 18 week testing period.
- the hydrogen peroxide is a 31.1 solution and has a. specific gravity of 1.147.
- Table I shows the results of corrosion tests on aqueous ammonia-ammonium nitrate solutions containing varying supposed inhibitors.
- aorasas Table II shows the results obtained when adding con taminants to aqueous ammonia-ammonium nitrate solutions either with or without hydrogen peroxide incorporated therein.
- composition of claim 3 in which the soluble sulfur-containing material is selected from the group consisting of sodium sulfite and sodium sulfide.
- a container having internal surfaces of ferrous material having therein an ammoniacal ammonium nitrate composition containing about 0.0001 to 3% by weight of hydrogen peroxide to inhibit corrosion of said ferrous metal surfaces, said solution having about 10 to 35% byweight of ammonium hydroxide and about 1 to 35% by weight of ammonium nitrate.
- the container of claim 5 wherein is included in the ammoniacal ammonium nitrate composition a small, contaminating amount of a soluble sulfur-containing material selected from the group consisting of sodium sulfite and sodium sulfide sufiicient to cause corrosion of ferrous surfaces contacting said composition.
- a composition consisting essentially of an ammonia-a'mrnonium nitrate aqueous solution having incorporated therein about 0.0001 to 3% by weight of hydrogen peroxide, said solution having about 10 to by weight of ammonium hydroxide and aboutl to 35% by weight of ammonium nitrate.
- composition of claim 1 in which the amount of hydrogen peroxide incorporated is about 0.001 to 0.3%.
- composition of claim 1 which includes a small, contaminating amount of a soluble sulfur-containing ma- References Cited; in the tile of this patent UNITED STATES PATENTS 1,975,682 Callery Oct. 2, 1934 2,077,469 Fazel Apr. 20, 1937 2,141,189 Lind Dec. 27, 1938 2,465,228 Hein Mar. 22, 1949 2,747,734 Rose May 29, 1956 2,782,100 Greenspan Feb. 19, 1957 2,855,286 Harvey Oct. 7, 1958 2,882,237 Mahoney Apr. 14, 1959 2,936,884 Marsh et al. May 17, 1960 OTHER REFERENCES W. A. Marshall: Metal Finishing, vol. 50, November 1952, pp. 7885.
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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
ited rates Patent @ftice dfilbfi l Patented Feb. 5, 1963 No (let. 3. 3.953, der. No.
6 Claims. ((Il. 296-84) My invention relates to the corrosion of ferrous metals. .lore specifically, my invention relates to a composition consisting essentially of aqueous ammonia, ammonium nitrate and hydrogen peroxide said composition having reduced corrosion tendencies toward metal surfaces.
There is a well recognized corrosion problem in industries concerned with the manufacture, storage, transportation and handlin of ammonia-ammonium nitrate aqueous solution. In the handling of this solution it is often necessary to transport and store it in metal containers such as drums, tanks, and pipelines. These containers often have varying amounts of contaminants such as water and the like which tend to increase corrosion to ferrous metal surfaces. Storage and transportation present a favorable situation for contamination of aqueous ammonia-ammonium nitrate solutions with ma erials such as those containing sulfur. Even slight contamination has been found to cause rapid corrosion and the formation of rust.
This corrosion has resulted in the use of costly aluminum processing, sto -ng and handling equipment and the application of scmce and costly internal coatings to container walls in order to reduce corrosion.
Corrosion inhibitors of one type or another have been suggested and attempted with varying degrees of limited success. An example of such an inhibitor is ammonium thiocyanate which has been found to be relatively unsuccessful and thus generally abandoned. Sodium silicate, another supposed inhibitor, is ineffective and at times has permitted immediate and rapid corrosive attacks.
Other corrosion problems have arisen regarding the use of equipment when contacted with aqueous ammoniaamrnonium nitrate solutions in fertilizer plants. The presence of said solutions causes destructive corrosion to the equipment utilized in handling, storage and shipment of fertilizer products. An aqueous ammonia-ammonium nitrate solution in a reasonably pure state is mildly corrosive but in the presence of small amounts of corrosive constituents, i.e. about .05% by weight or more, there is im mediate and rapid attack on ferrous metal surfaces. As a practical matter such corrosive constituents are normally found in common commercial plants such as fertilizer plants which produce this solution. The contaminants are in general at least somewhat soluble sulfur constituents either organic or inorganic. Examples of these are sodium sulfide, sodium suliite, butyl mercaptans and sodium salts of butyl mercaptans.
in my invention 1 have found a new composition consisting essentially of aqueous ammonia-ammonium nitrate solution having hydrogen peroxide incorporated therein. My composition has reduced corrosion tendencies towards metal surfaces such as steel. The aqueous ammonia-ammonium nitrate solution utilized in my invention can be prepared by the addition of commercial ammonium hydroxide to ammonium nitrate with a subsequent addition or" water. The percent of ammonium hydroxide may vary with the desired properties peculiar to each solution. The preferred amount of ammonium hydroxide is about 10 to 35% by weight of the final composition. The amount of ammonium nitrate in my composition may vary from about 1 to 35% by Weight of the final composition. Cornmercial hydrogen peroxide can be utilized in my composition and will usually be about 0.0001 to 3% or more (H 0 basis) of the composition by weight with a preferred amount being about .001 to 0.3% by weight.
I conducted various tests under static conditions at room temperature using mild steel coupons having twothirds of their length immersed in various solutions. Each test started with ml. of solution in a 4 02. square jar with the coupon upright therein. The initial series of tests used bright, polished cold-rolled steel coupons. In the later tests hot-rolled steel coupons were used each having a mill-scaled side and edge and the other surfaces polished. In each of the examples there was employed an aqueous solution of 24% ammonium hydroxide, 4% of ammonium nitrate and .14% of varying supposed inhibitor or hydrogen peroxide.
EXAMPLE I A composition containing aqueous ammonia-ammonium nitrate and sodium silicate was tested according to the above and found to be corrosive with an immediate attack of rust on the steel coupons, and after 3 days of exposure, the rate of corrosion of the coupon was measured at 2278 rndd. which corresponds to' a rust penetration of inch in a nine month period. Mdd. is milligrams weight loss per square decimeter of exposed surface per day of exposure.
EXAMPLE II A composition containing ammonium thiocyanate and the aqueous ammonia-ammonium nitrate solution was tested according to the above and heavy rust on the immersed steel coupons appeared at the end of a 15 week period.
EXAMPLE 111 Using the above testing procedure, an octadecyl amineaqueous ammonia-ammonium nitrate solution was tested for corrosive tendencies. During an 18 week testing period, heavy rusting occurred thus showing the composition to be inetlective in inhibiting corrosion.
EXAMPLE IV Similarly a potassium chromate-aqueous ammonia-ammonium nitrate solution was tested and found to be corrosive when in contact with a steel coupon such as described above and medium rust occurred during an 18 week testing period.
EXAMPLE V Using the above testing procedure, a hydrogen sulfideaqueous ammonia-ammonium nitrate solution was applied to a steel coupon and a black coating appeared on. the metallic surfaces in approximately two weeks.
EXAMPLE VI Using the above testing procedure a steel coupon was immersed into my aqueous ammonia-ammonium nitrate hydrogen peroxide composition containing by weight 24 percent of NH OH, 4 percent of NH NO and 1.64 ml. of H 0 This composition exhibited freedom from corrosion during an 8 Week testing period.
The hydrogen peroxide is a 31.1 solution and has a. specific gravity of 1.147. Table I shows the results of corrosion tests on aqueous ammonia-ammonium nitrate solutions containing varying supposed inhibitors.
aorasas Table II shows the results obtained when adding con taminants to aqueous ammonia-ammonium nitrate solutions either with or without hydrogen peroxide incorporated therein.
terial sufiicient to cause corrosion of ferrous surfaces contacting said compositions.
4. The composition of claim 3 in which the soluble sulfur-containing material is selected from the group consisting of sodium sulfite and sodium sulfide.
5. A container, having internal surfaces of ferrous material having therein an ammoniacal ammonium nitrate composition containing about 0.0001 to 3% by weight of hydrogen peroxide to inhibit corrosion of said ferrous metal surfaces, said solution having about 10 to 35% byweight of ammonium hydroxide and about 1 to 35% by weight of ammonium nitrate.
6. The container of claim 5 wherein is included in the ammoniacal ammonium nitrate composition a small, contaminating amount of a soluble sulfur-containing material selected from the group consisting of sodium sulfite and sodium sulfide sufiicient to cause corrosion of ferrous surfaces contacting said composition.
Tablev II [Static-corrosion tests of hot-rolled mild steel (half mill-scaled, half-polished)] Solution 5 Contami- 1 Time H202. nant 0.1 gm. exposed. Busting m1. days Percent Percent NH4OH NH4NO3 24 4 2. 60 55 No rust, no loss.
24 4 Heavy rusting (128.3 m ld.).
24- 4 10. Heavyrusting (1.589 Ind l.).
I The'hydrogen peroxide was a 31.2% solution. Specific gravity is 1.147.
exposure.
The data above clearly show that my composition has. reduced corrosive tendencies andiis efiective in overcoming the problem of corrosion in the manufacture, transportation, storage and handling of aqueous ammonia ammonium nitrate solutions.
Iclaim:
1'. A composition consisting essentially of an ammonia-a'mrnonium nitrate aqueous solution having incorporated therein about 0.0001 to 3% by weight of hydrogen peroxide, said solution having about 10 to by weight of ammonium hydroxide and aboutl to 35% by weight of ammonium nitrate.
2'. The composition of claim 1 inwhich the amount of hydrogen peroxide incorporated is about 0.001 to 0.3%.
3. The composition of claim 1 which includes a small, contaminating amount of a soluble sulfur-containing ma- References Cited; in the tile of this patent UNITED STATES PATENTS 1,975,682 Callery Oct. 2, 1934 2,077,469 Fazel Apr. 20, 1937 2,141,189 Lind Dec. 27, 1938 2,465,228 Hein Mar. 22, 1949 2,747,734 Rose May 29, 1956 2,782,100 Greenspan Feb. 19, 1957 2,855,286 Harvey Oct. 7, 1958 2,882,237 Mahoney Apr. 14, 1959 2,936,884 Marsh et al. May 17, 1960 OTHER REFERENCES W. A. Marshall: Metal Finishing, vol. 50, November 1952, pp. 7885.
Thorpes Dictionary of Applied Chemistry, Fourth Ed, vol. VI, 1943, pp. 3456.
Claims (1)
1. A COMPOSITION CONTSISTING ESSENTIALLY OF AN AMMONIA-AMMONIUM NITRATE AQUEOUS SOLUTION HAVING INCORPORATED THEREIN ABOUT 0.0001 TO 3% BY WEIGHT OF HYDROGEN PEROXIDE, SAID SOLUTION HAVIN ABOUT 10 TO 35% BY WEIGHT OF AMMONIUM HYDROXIDE AND ABOUT 1 TO 35% BY WEIGHT OF AMMONIUM NITRATE.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US765062A US3076543A (en) | 1958-10-03 | 1958-10-03 | Ammoniacal ammonium nitrate solution with hydrogen peroxide as corrosion inhibitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US765062A US3076543A (en) | 1958-10-03 | 1958-10-03 | Ammoniacal ammonium nitrate solution with hydrogen peroxide as corrosion inhibitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3076543A true US3076543A (en) | 1963-02-05 |
Family
ID=25072533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US765062A Expired - Lifetime US3076543A (en) | 1958-10-03 | 1958-10-03 | Ammoniacal ammonium nitrate solution with hydrogen peroxide as corrosion inhibitor |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US3076543A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3162550A (en) * | 1961-05-08 | 1964-12-22 | Union Oil Co | Process of preventing corrosion of ferrous metal by an aqua ammonia solution |
| EP0404788A4 (en) * | 1988-03-17 | 1991-04-17 | Comalco Limited | Metallic surface protection |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1975682A (en) * | 1932-03-23 | 1934-10-02 | Nuevos Explosivos Ind S A | Process for manufacturing an explosive substance containing ammonium nitrate |
| US2077469A (en) * | 1930-02-28 | 1937-04-20 | Solvay Process Co | The packing and transportation of ammonium nitrate-ammonia compositions |
| US2141189A (en) * | 1933-12-22 | 1938-12-27 | Henkel & Cie Gmbh | Bleaching and cleansing compositions |
| US2465228A (en) * | 1946-05-07 | 1949-03-22 | Westinghouse Electric Corp | Liquid treatment of contact surfaces for copper oxide rectifiers |
| US2747734A (en) * | 1953-06-12 | 1956-05-29 | Milton F Rose | Composition of matter for removing abradant substances from exfoliated vermiculite and process of using same |
| US2782100A (en) * | 1951-01-13 | 1957-02-19 | Fmc Corp | Method of improving stability of concentrated hydrogen peroxide in contact with stainless steel and aluminum alloys |
| US2855286A (en) * | 1955-08-19 | 1958-10-07 | Allied Chem | Process and composition for reducing corrosion of metals |
| US2882237A (en) * | 1956-05-29 | 1959-04-14 | Shell Dev | Method for oxidizing carbonaceous deposits |
| US2936884A (en) * | 1958-05-20 | 1960-05-17 | Pure Oil Co | Corrosion inhibition in aqueous ammonia-ammonium nitrate systems |
-
1958
- 1958-10-03 US US765062A patent/US3076543A/en not_active Expired - Lifetime
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2077469A (en) * | 1930-02-28 | 1937-04-20 | Solvay Process Co | The packing and transportation of ammonium nitrate-ammonia compositions |
| US1975682A (en) * | 1932-03-23 | 1934-10-02 | Nuevos Explosivos Ind S A | Process for manufacturing an explosive substance containing ammonium nitrate |
| US2141189A (en) * | 1933-12-22 | 1938-12-27 | Henkel & Cie Gmbh | Bleaching and cleansing compositions |
| US2465228A (en) * | 1946-05-07 | 1949-03-22 | Westinghouse Electric Corp | Liquid treatment of contact surfaces for copper oxide rectifiers |
| US2782100A (en) * | 1951-01-13 | 1957-02-19 | Fmc Corp | Method of improving stability of concentrated hydrogen peroxide in contact with stainless steel and aluminum alloys |
| US2747734A (en) * | 1953-06-12 | 1956-05-29 | Milton F Rose | Composition of matter for removing abradant substances from exfoliated vermiculite and process of using same |
| US2855286A (en) * | 1955-08-19 | 1958-10-07 | Allied Chem | Process and composition for reducing corrosion of metals |
| US2882237A (en) * | 1956-05-29 | 1959-04-14 | Shell Dev | Method for oxidizing carbonaceous deposits |
| US2936884A (en) * | 1958-05-20 | 1960-05-17 | Pure Oil Co | Corrosion inhibition in aqueous ammonia-ammonium nitrate systems |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3162550A (en) * | 1961-05-08 | 1964-12-22 | Union Oil Co | Process of preventing corrosion of ferrous metal by an aqua ammonia solution |
| EP0404788A4 (en) * | 1988-03-17 | 1991-04-17 | Comalco Limited | Metallic surface protection |
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