US2786797A - Corrosion-inhibited quaternary ammonium compositions - Google Patents
Corrosion-inhibited quaternary ammonium compositions Download PDFInfo
- Publication number
- US2786797A US2786797A US430720A US43072054A US2786797A US 2786797 A US2786797 A US 2786797A US 430720 A US430720 A US 430720A US 43072054 A US43072054 A US 43072054A US 2786797 A US2786797 A US 2786797A
- Authority
- US
- United States
- Prior art keywords
- quaternary ammonium
- ammonium compound
- inhibited
- corrosion
- 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.)
- Expired - Lifetime
Links
- 239000000203 mixture Substances 0.000 title description 6
- 238000005260 corrosion Methods 0.000 title description 4
- 230000007797 corrosion Effects 0.000 title description 3
- 125000001453 quaternary ammonium group Chemical group 0.000 title 1
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 27
- 150000003856 quaternary ammonium compounds Chemical class 0.000 claims description 22
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 claims description 18
- 239000000243 solution Substances 0.000 claims description 17
- 230000000844 anti-bacterial effect Effects 0.000 claims description 11
- 235000010288 sodium nitrite Nutrition 0.000 claims description 9
- 230000001954 sterilising effect Effects 0.000 claims description 9
- 239000007864 aqueous solution Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims description 3
- 239000003381 stabilizer Substances 0.000 claims description 3
- 239000004615 ingredient Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- PVVUWCYTDNBWJC-UHFFFAOYSA-N n-benzyl-n-methyldodecan-1-amine;hydrochloride Chemical compound [Cl-].CCCCCCCCCCCC[NH+](C)CC1=CC=CC=C1 PVVUWCYTDNBWJC-UHFFFAOYSA-N 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 239000002537 cosmetic Substances 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 230000009972 noncorrosive effect Effects 0.000 description 2
- DCNHQNGFLVPROM-VAWYXSNFSA-N (e)-n,n-dimethyloctadec-9-en-1-amine Chemical compound CCCCCCCC\C=C\CCCCCCCCN(C)C DCNHQNGFLVPROM-VAWYXSNFSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 1
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- HYUAEEBSTHKMDZ-UHFFFAOYSA-L [Cl-].[Cl-].C=1C=CC=CC=1OCCOCC[N+](C)(C)C(CC(C)C)(CC(C)C)C1=CC=CC=C1.C=1C=CC=CC=1OCCOCC[N+](C)(C)C(CC(C)C)(CC(C)C)C1=CC=CC=C1 Chemical compound [Cl-].[Cl-].C=1C=CC=CC=1OCCOCC[N+](C)(C)C(CC(C)C)(CC(C)C)C1=CC=CC=C1.C=1C=CC=CC=1OCCOCC[N+](C)(C)C(CC(C)C)(CC(C)C)C1=CC=CC=C1 HYUAEEBSTHKMDZ-UHFFFAOYSA-L 0.000 description 1
- 125000006177 alkyl benzyl group Chemical group 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- 150000003863 ammonium salts Chemical group 0.000 description 1
- UREZNYTWGJKWBI-UHFFFAOYSA-M benzethonium chloride Chemical compound [Cl-].C1=CC(C(C)(C)CC(C)(C)C)=CC=C1OCCOCC[N+](C)(C)CC1=CC=CC=C1 UREZNYTWGJKWBI-UHFFFAOYSA-M 0.000 description 1
- -1 chloride 9-octadecenylethyldimethylammonium bromide Cetyldimethylbenzylammonium chloride Dodecyldimethylamine oxide Chemical compound 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- NHLUVTZJQOJKCC-UHFFFAOYSA-N n,n-dimethylhexadecan-1-amine Chemical compound CCCCCCCCCCCCCCCCN(C)C NHLUVTZJQOJKCC-UHFFFAOYSA-N 0.000 description 1
- 229940112041 peripherally acting muscle relaxants other quaternary ammonium compound in atc Drugs 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 238000006467 substitution reaction 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
Definitions
- the present invention relates to a bactericidal composition and more particularly to a solution suitable for sterilizing medical instruments and the like characterized by goodbactericidal properties and a high degree of stability.
- One of the principal ingredients of the composition of the present invention consists of a quaternary ammonium compound or a mixture of such compounds.
- a large number of quaternary ammonium compounds have been investigated and tested with regard to bactericidal power. It has been found that there are a number of quaternary ammonium compounds having satisfactory bactericidal power but it has also been found that a problem exists in stabilizing solutions of such compounds while at the same time retaining the desired bactericidal properties.
- the principal object of the present invention is to provide a bactericidal solution containing a quaternary ammonium compound and having sterilizing characteristics while at the same time being stable and non-corrosive to metals under normal conditions of storage or use.
- Example I Percentage by weight Methyl dodecyl benzyl ammonium chloride 17.5 Propylene glycol 20.0 Sodium nitrite 20.0 Water 42.5
- the solution of the above example is made up by first mixing the sodium nitrite and the water and then adding the propylene glycol.
- the quaternary ammonium compound is then slowly added with continuous stirring. Best results are obtained by mixing in the temperature range of about 140 F. to 150 F.
- the quaternary ammonium compound should be added at a rate corresponding to about a total time of about 20 minutes for a 2,000 gallon batch. This is done with continuous stirring. At lower temperatures more time will be required and at room temperature continuous stirring for about 24 hours would be necessary.
- the mixture is filtered and the pH is then adjusted in the range between 7.5 and 10.5 by adding a small amount of technical grade sodium hydroxide. The amount required to bring the solution within the desired pH range is about .005% of the total rates Patent 2,786,797 Patented Mar. 26, 19.57
- Alkyldimethylbenzylammonium chloride Diisobutyl phenoxyethoxyethyldimethylbenzylammonium chloride Alkylarylpyridinium chloride 9-octadecenylethyldimethylammonium bromide Cetyldimethylbenzylammonium chloride Dodecyldimethylamine oxide 9-octadecenyldime thylamine oxide 7 Cetyldimethylamine Any of the above may be used in the practice of the present invention either alone or in admixture in the percentage by weight indicated in Example I.
- Example I Since the relative amounts will be the same for all of the ingredients of Example I in all cases, it is felt that a repetition of Example I substituting each of the above listed quaternary ammonium compounds for the particular quaternary ammonium compound of Example I would unnecessarily extend the present specification and, therefore, the above list has been provided in lieu thereof. However, it is my intention that this should be taken as a disclosure of all of the examples which would result from such substitution.
- An inhibited bactericidal aqueous solution for sterilizing metal objects comprising a bactericidal quaternary ammonium compound containing a stabilizer consisting essentially of propylene glycol and sodium nitrite, said solution containing hydroxyl ion in an amount to provide a pH in the range of about 7.5 to about 10.5.
- a sterilizing solution for medical instruments and the like having a pH in the range of about 7.5 to 10.5 comprising the following ingredients in substantially the relative amounts stated:
- a sterilizing solution for medical instruments and the like having a pH in the range of about 7.5 to 10.5 comprising the following ingredients in substantially the relative amounts stated:
- Methyl dodecyl benzyl ammonium chloride 17.5 Propylene glycol 20.0 Sodium nitrite 20.0 Water 42.5
- An inhibited aqueous solution for contact with metal objects without corroding the same comprising a quaternary ammonium compound containing a stabilizer consisting essentially of propylene glycol and sodium nitrite, said solution containing hydroxyl ion in an amount to provide a pH in the range of about 7.5 to 10.5.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Description
2,786,797 coRRosIoN-mrnBrrED QUATERNARY AMMONIUM COMPOSITIONS Harold G. Lederer, Longport; N. J.,-assignor'to R. M.
Hollingshead Corporation, Camden, N. J., a corporation of New Jersey No Drawing. Application May 18, 1954, Serial No.430,720
9 Claims. or. 167 30) The present invention relates to a bactericidal composition and more particularly to a solution suitable for sterilizing medical instruments and the like characterized by goodbactericidal properties and a high degree of stability.
One of the principal ingredients of the composition of the present invention consists of a quaternary ammonium compound or a mixture of such compounds. For the past several years a large number of quaternary ammonium compounds have been investigated and tested with regard to bactericidal power. It has been found that there are a number of quaternary ammonium compounds having satisfactory bactericidal power but it has also been found that a problem exists in stabilizing solutions of such compounds while at the same time retaining the desired bactericidal properties. I have found that the use of propylene glycol and sodium nitrite in the manner hereinafter described provides, in conjunction with a quaternary ammonium compound and water, a highly satisfactory sterilizing solution which has sufficient bactericidal properties to carry out sterilization of medical instruments even where the solution is used cold while at the same time remaining stable 'and non-corrosive. This latter characteristic is of particular importance where metal instruments are to be sterilized.
Accordingly the principal object of the present invention is to provide a bactericidal solution containing a quaternary ammonium compound and having sterilizing characteristics while at the same time being stable and non-corrosive to metals under normal conditions of storage or use.
The ingredients making up a preferred example illustrating the present invention and the relative amounts thereof are set forth in the following example:
Example I Percentage by weight Methyl dodecyl benzyl ammonium chloride 17.5 Propylene glycol 20.0 Sodium nitrite 20.0 Water 42.5
The solution of the above example is made up by first mixing the sodium nitrite and the water and then adding the propylene glycol. The quaternary ammonium compound is then slowly added with continuous stirring. Best results are obtained by mixing in the temperature range of about 140 F. to 150 F. The quaternary ammonium compound should be added at a rate corresponding to about a total time of about 20 minutes for a 2,000 gallon batch. This is done with continuous stirring. At lower temperatures more time will be required and at room temperature continuous stirring for about 24 hours would be necessary. After the quaternary ammonium compound has been added, the mixture is filtered and the pH is then adjusted in the range between 7.5 and 10.5 by adding a small amount of technical grade sodium hydroxide. The amount required to bring the solution within the desired pH range is about .005% of the total rates Patent 2,786,797 Patented Mar. 26, 19.57
\ 2 weight of the solution following the addition of all of the quaternary ammonium compound.
While the invention has been described above by referenceto a particular quaternary ammonium compound, I have found that other quaternary ammonium compounds can be used. Included among thes'eare th'efollowing: l
Alkyldimethylbenzylammonium chloride Diisobutyl phenoxyethoxyethyldimethylbenzylammonium chloride Alkylarylpyridinium chloride 9-octadecenylethyldimethylammonium bromide Cetyldimethylbenzylammonium chloride Dodecyldimethylamine oxide 9-octadecenyldime thylamine oxide 7 Cetyldimethylamine Any of the above may be used in the practice of the present invention either alone or in admixture in the percentage by weight indicated in Example I. Since the relative amounts will be the same for all of the ingredients of Example I in all cases, it is felt that a repetition of Example I substituting each of the above listed quaternary ammonium compounds for the particular quaternary ammonium compound of Example I would unnecessarily extend the present specification and, therefore, the above list has been provided in lieu thereof. However, it is my intention that this should be taken as a disclosure of all of the examples which would result from such substitution.
The mechanism responsible for the usual corrosion and rusting difficulties encountered in the use of quaternary ammonium compound solutions in the presence of metals is not entirely understood. Likewise I am not certain as to the complete explanation of the surprising lack of corrosion resulting from the use of sodium nitrite and propylene glycol in the invention as described above. However, exhaustive tests of the various sterilizing solutions disclosed above have demonstrated beyond question that a significant anti-corrosion result is achieved.
Throughout this specification and claims, it is intended that equivalent materials shall be included as coming within the present invention.
Having thus described my invention, I claim:
1. An inhibited bactericidal aqueous solution for sterilizing metal objects comprising a bactericidal quaternary ammonium compound containing a stabilizer consisting essentially of propylene glycol and sodium nitrite, said solution containing hydroxyl ion in an amount to provide a pH in the range of about 7.5 to about 10.5.
2. The solution defined in claim 1 wherein the quaternary ammonium compound is alkyl benzyl ammonium chloride.
3. The solution defined in claim 1 wherein the quaternary ammonium compound is methyl dodecyl benzyl ammonium chloride.
4. A sterilizing solution for medical instruments and the like having a pH in the range of about 7.5 to 10.5 comprising the following ingredients in substantially the relative amounts stated:
Percentage by weight Bactericidal quaternary ammonium compound 17.5 Propylene glycol 20.0 Sodium nitrite 20.0 Water 42.5
5. A sterilizing solution for medical instruments and the like having a pH in the range of about 7.5 to 10.5 comprising the following ingredients in substantially the relative amounts stated:
Percentage by weight Methyl dodecyl benzyl ammonium chloride 17.5 Propylene glycol 20.0 Sodium nitrite 20.0 Water 42.5
6. An inhibited aqueous solution for contact with metal objects without corroding the same comprising a quaternary ammonium compound containing a stabilizer consisting essentially of propylene glycol and sodium nitrite, said solution containing hydroxyl ion in an amount to provide a pH in the range of about 7.5 to 10.5.
7. The inhibited aqueous solution defined in claim 6 wherein the quaternary ammonium compound is diisobutyl phenoxyethoxyethyldimethylbenzylammonium chloride.
8. The inhibited aqueous solution defined in claim 6 wherein the quaternary ammonium compound is alkarylpyridinium chloride.
9. The inhibited aqueous solution defined iin claim 6 wherein the quaternary ammonium compound is cetyltrimethylammonium bromide.
OTHER REFERENCES Drug and Cosmetic Ind., February 1947, vol. 60, No. 2, pp. -182 and 268-271.
Drug and Cosmetic 1nd, May 1949, vol. 64, No. 5, pages 631-636 (634, 635 pertinent).
Claims (1)
1. AN INHIBITED BACTERICIDAL AQUEOUS SOLUTION FOR STERILIZING METAL OBJECTS COMPRISING A BACTERICIDAL QUATERNARY AMMONIUM COMPOUND CONTAINING A STABILIZER CONSISTING ESSENTIALLY OF PROPYLENE GLYCOL AND SODIUM NITRITE, SAID SOLUTION CONTAININIG HYDROXYL ION IN AN AMOUNT TO PROVIDE A PH IN THE RANGE OF ABOUT 7.5 ABOUT 10.5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US430720A US2786797A (en) | 1954-05-18 | 1954-05-18 | Corrosion-inhibited quaternary ammonium compositions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US430720A US2786797A (en) | 1954-05-18 | 1954-05-18 | Corrosion-inhibited quaternary ammonium compositions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2786797A true US2786797A (en) | 1957-03-26 |
Family
ID=23708741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US430720A Expired - Lifetime US2786797A (en) | 1954-05-18 | 1954-05-18 | Corrosion-inhibited quaternary ammonium compositions |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2786797A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2951788A (en) * | 1960-09-06 | Quaternary ammonium bactericides | ||
| US2951787A (en) * | 1960-09-06 | Table i | ||
| US3203855A (en) * | 1962-07-17 | 1965-08-31 | Ciba Ltd | Method for combating fungi with 2-(2, 2, 2-trichloro-1-hydroxyethylamino) pyridine |
| US3833345A (en) * | 1969-12-27 | 1974-09-03 | Nippon Yusen Kk | Method for inhibiting the formation of sludge in fuel oils |
| US3880613A (en) * | 1972-02-07 | 1975-04-29 | Alexis A Oswald | Higher alkyl trimethyl ammonium salt liquid hydrocarbon compositions |
| EP0377120A3 (en) * | 1989-01-04 | 1991-01-16 | Interchem Ag | Disinfecting composition |
| EP0422349A1 (en) * | 1989-09-08 | 1991-04-17 | AVALON FINANZIARIA S.r.l. | Disinfectant and method of preparation thereof |
| US5234817A (en) * | 1988-10-07 | 1993-08-10 | Eastman Kodak Company | Wash solution containing a cationic surfactant and its use in chlamydial and gonococcal determinations |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1983031A (en) * | 1930-05-02 | 1934-12-04 | Parker White And Heyl Inc | Sterilizing composition |
| US2108765A (en) * | 1938-02-15 | Preserving and disinfecting media | ||
| US2304950A (en) * | 1939-07-26 | 1942-12-15 | Bard Parker Company Inc | Germicide |
| US2330524A (en) * | 1941-06-16 | 1943-09-28 | Alox Corp | Corrosion inhibitor |
| US2344404A (en) * | 1939-10-21 | 1944-03-14 | Giloy Franz | Corrosion preventing agent |
| CH248346A (en) * | 1944-11-24 | 1947-04-30 | Ciba Geigy | Disinfection method. |
| US2479850A (en) * | 1949-08-23 | Process of killing bacteria in pres | ||
| US2541248A (en) * | 1951-02-13 | Compositions |
-
1954
- 1954-05-18 US US430720A patent/US2786797A/en not_active Expired - Lifetime
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2108765A (en) * | 1938-02-15 | Preserving and disinfecting media | ||
| US2479850A (en) * | 1949-08-23 | Process of killing bacteria in pres | ||
| US2541248A (en) * | 1951-02-13 | Compositions | ||
| US1983031A (en) * | 1930-05-02 | 1934-12-04 | Parker White And Heyl Inc | Sterilizing composition |
| US2304950A (en) * | 1939-07-26 | 1942-12-15 | Bard Parker Company Inc | Germicide |
| US2344404A (en) * | 1939-10-21 | 1944-03-14 | Giloy Franz | Corrosion preventing agent |
| US2330524A (en) * | 1941-06-16 | 1943-09-28 | Alox Corp | Corrosion inhibitor |
| CH248346A (en) * | 1944-11-24 | 1947-04-30 | Ciba Geigy | Disinfection method. |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2951788A (en) * | 1960-09-06 | Quaternary ammonium bactericides | ||
| US2951787A (en) * | 1960-09-06 | Table i | ||
| US3203855A (en) * | 1962-07-17 | 1965-08-31 | Ciba Ltd | Method for combating fungi with 2-(2, 2, 2-trichloro-1-hydroxyethylamino) pyridine |
| US3833345A (en) * | 1969-12-27 | 1974-09-03 | Nippon Yusen Kk | Method for inhibiting the formation of sludge in fuel oils |
| US3880613A (en) * | 1972-02-07 | 1975-04-29 | Alexis A Oswald | Higher alkyl trimethyl ammonium salt liquid hydrocarbon compositions |
| US5234817A (en) * | 1988-10-07 | 1993-08-10 | Eastman Kodak Company | Wash solution containing a cationic surfactant and its use in chlamydial and gonococcal determinations |
| EP0377120A3 (en) * | 1989-01-04 | 1991-01-16 | Interchem Ag | Disinfecting composition |
| EP0422349A1 (en) * | 1989-09-08 | 1991-04-17 | AVALON FINANZIARIA S.r.l. | Disinfectant and method of preparation thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4606831A (en) | Stabilized galactomannan gum compositions | |
| EP0109279B1 (en) | Hydrogen peroxide composition | |
| US2786797A (en) | Corrosion-inhibited quaternary ammonium compositions | |
| US10538674B2 (en) | Method of forming anti-rust or anti-bacterial film containing tannic acid derivatives | |
| US5684025A (en) | Liquid formulations of 1,2-benzisothiazolin-3-one | |
| DE69413612T2 (en) | Hydrogen peroxide composition | |
| DE60020377T2 (en) | CORROSION INHIBITION PROCEDURE SUITABLE FOR USE IN DRINKING WATER | |
| DE60011717T2 (en) | Low-phosphorus coolant composition | |
| CN112889820B (en) | Compound quaternary ammonium salt disinfectant and preparation method and use method thereof | |
| DE3338953A1 (en) | USE OF CORROSION INHIBITORS IN AQUEOUS SYSTEMS | |
| DE1546412A1 (en) | Paper handling solutions | |
| US1983031A (en) | Sterilizing composition | |
| WO1985001964A1 (en) | Corrosion inhibitors for zinc | |
| JPS60132908A (en) | Stabilized sterilizing composition based on phosethyl aluminum and copper compound | |
| EP0163107B1 (en) | Use of benzoylalanines as corrosion inhibitors in aqueous systems | |
| US3173832A (en) | Paraformaldehyde stabilized fungicidal compositions | |
| DE2525403A1 (en) | HYDRAULIC FLUID | |
| JP3201038B2 (en) | Freshener for cut flowers and leafy vegetables | |
| US2254940A (en) | Rust prevention | |
| US2758049A (en) | Iodine dissolved in an aqueous solution of polyacrylic acid | |
| US2504200A (en) | Corrosion inhibiting compositions | |
| US2294724A (en) | Stabilized dry rosin size | |
| US3592892A (en) | Antifungal and antibacterial nitroalkyl-n-phenylcarbamates | |
| US2684914A (en) | Method of increasing the viscosity of sodium carboxymethylcellulose solutions and compositions so formed | |
| US2710822A (en) | Manganous ethylene bis-dithiocarbamate fungicide composition and method of applying |