GB2084875A - Iodophor powder composition - Google Patents
Iodophor powder composition Download PDFInfo
- Publication number
- GB2084875A GB2084875A GB8130421A GB8130421A GB2084875A GB 2084875 A GB2084875 A GB 2084875A GB 8130421 A GB8130421 A GB 8130421A GB 8130421 A GB8130421 A GB 8130421A GB 2084875 A GB2084875 A GB 2084875A
- Authority
- GB
- United Kingdom
- Prior art keywords
- powder composition
- iodophor
- acid
- iodide
- iodine
- 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.)
- Withdrawn
Links
- 239000000203 mixture Substances 0.000 title claims abstract description 57
- 239000000843 powder Substances 0.000 title claims abstract description 32
- 229910052740 iodine Inorganic materials 0.000 claims abstract description 27
- 239000011630 iodine Substances 0.000 claims abstract description 27
- 238000004140 cleaning Methods 0.000 claims abstract description 23
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000002253 acid Substances 0.000 claims abstract description 21
- NLKNQRATVPKPDG-UHFFFAOYSA-M potassium iodide Chemical compound [K+].[I-] NLKNQRATVPKPDG-UHFFFAOYSA-M 0.000 claims abstract description 18
- 239000007800 oxidant agent Substances 0.000 claims abstract description 17
- 229920000642 polymer Polymers 0.000 claims abstract description 14
- 238000011012 sanitization Methods 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims abstract description 7
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims abstract description 7
- 239000001267 polyvinylpyrrolidone Substances 0.000 claims abstract description 7
- 229960001922 sodium perborate Drugs 0.000 claims abstract description 7
- YKLJGMBLPUQQOI-UHFFFAOYSA-M sodium;oxidooxy(oxo)borane Chemical compound [Na+].[O-]OB=O YKLJGMBLPUQQOI-UHFFFAOYSA-M 0.000 claims abstract description 7
- XMBWDFGMSWQBCA-UHFFFAOYSA-M iodide Chemical compound [I-] XMBWDFGMSWQBCA-UHFFFAOYSA-M 0.000 claims abstract description 6
- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical compound I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 claims description 15
- 239000004094 surface-active agent Substances 0.000 claims description 12
- 239000000470 constituent Substances 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 7
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 6
- IIACRCGMVDHOTQ-UHFFFAOYSA-N sulfamic acid Chemical compound NS(O)(=O)=O IIACRCGMVDHOTQ-UHFFFAOYSA-N 0.000 claims description 6
- 239000000945 filler Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 239000002250 absorbent Substances 0.000 claims description 3
- 230000002745 absorbent Effects 0.000 claims description 3
- 239000012876 carrier material Substances 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 claims description 3
- 229910001516 alkali metal iodide Inorganic materials 0.000 claims description 2
- WBHQBSYUUJJSRZ-UHFFFAOYSA-M sodium bisulfate Chemical compound [Na+].OS([O-])(=O)=O WBHQBSYUUJJSRZ-UHFFFAOYSA-M 0.000 claims description 2
- 230000002378 acidificating effect Effects 0.000 abstract description 2
- 239000003795 chemical substances by application Substances 0.000 abstract description 2
- 150000002496 iodine Chemical class 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 15
- 235000013365 dairy product Nutrition 0.000 description 9
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 230000002411 adverse Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 229910001511 metal iodide Inorganic materials 0.000 description 3
- 239000008267 milk Substances 0.000 description 3
- 235000013336 milk Nutrition 0.000 description 3
- 210000004080 milk Anatomy 0.000 description 3
- FVAUCKIRQBBSSJ-UHFFFAOYSA-M sodium iodide Chemical compound [Na+].[I-] FVAUCKIRQBBSSJ-UHFFFAOYSA-M 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 239000004480 active ingredient Substances 0.000 description 2
- 239000003599 detergent Substances 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- IEORSVTYLWZQJQ-UHFFFAOYSA-N 2-(2-nonylphenoxy)ethanol Chemical compound CCCCCCCCCC1=CC=CC=C1OCCO IEORSVTYLWZQJQ-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- WHNWPMSKXPGLAX-UHFFFAOYSA-N N-Vinyl-2-pyrrolidone Chemical compound C=CN1CCCC1=O WHNWPMSKXPGLAX-UHFFFAOYSA-N 0.000 description 1
- 229920003081 Povidone K 30 Polymers 0.000 description 1
- 150000008065 acid anhydrides Chemical class 0.000 description 1
- 239000003929 acidic solution Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 150000004694 iodide salts Chemical class 0.000 description 1
- PNDPGZBMCMUPRI-UHFFFAOYSA-N iodine Chemical compound II PNDPGZBMCMUPRI-UHFFFAOYSA-N 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229920000847 nonoxynol Polymers 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920002959 polymer blend Polymers 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 235000009518 sodium iodide Nutrition 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- CIHOLLKRGTVIJN-UHFFFAOYSA-N tert‐butyl hydroperoxide Chemical compound CC(C)(C)OO CIHOLLKRGTVIJN-UHFFFAOYSA-N 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
- A01N59/12—Iodine, e.g. iodophors; Compounds thereof
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Agronomy & Crop Science (AREA)
- Inorganic Chemistry (AREA)
- Pest Control & Pesticides (AREA)
- Plant Pathology (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Dentistry (AREA)
- General Health & Medical Sciences (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Detergent Compositions (AREA)
Abstract
An iodophor powder composition for use as a cleaning and/or sanitizing agent, which shortly before use is dissolved in water and diluted to provide a solution having a suitable iodine concentration. The composition includes an iodide salt such as potassium iodide; an oxidising agent, such as sodium perborate, for releasing iodine from the iodine salt in the solution; a polymer, such as polyvinylpyrrolidone, for absorbing the released iodine and subsequently releasing the absorbed iodine to the solution at a slower rate; and an acid for providing an acidic medium.
Description
SPECIFICATION lodophor powder composition
This invention relates to an iodophor composition which may be used as a cleaning and/or sanitizing agent. In particular the invention relates to an iodophor composition which may be used for cleaning and/or sanitizing in power stations, dairies, breweries, abattoirs, butcheries, or the like,
According to the invention, there is provided an iodophor powder composition which comprises an iodide, salt; an oxidising agent which is stable in the dry form, and is capable of releasing iodine from the iodide salt in a solution formed by dispersing the powder composition in water; a polymer capable of forming a polymer-iodine complex and of subsequently making available a soluble form of the iodine; and an acid.
The composition is dissolved in water shortly before use, the acid constituent providing an acidic medium in which the iodide and oxidising agent react to liberate iodine which forms a polymer-iodine complex with the polymer. The polymer-iodine complex is in turn dissolved in the water to form a stable iodine solution which has cleaning and sanitizing properties, the polymer-iodine complex making available a soluble form of iodine for cleaning/sanitizing. The acid, further, may serve as an additional cleaning agent, for example for descaling cooling towers, removal of milk scale in dairies and beerstone in breweries.
The iodide may be an alkali metal iodide, such as sodium iodide and potassium iodide, or any other suitable metal iodide.
The oxidising agent may be sodium perborate or any other suitable oxidising agent of the large range available, provided only that it is stable in the dry form.
The polymer may be polyvinylpyrrolidone, or any other suitable polymer.
The acid may be organic or inorganic. For example, the acid may be selected from the group consisting in sulphamic acid, citric acid, and sodium bisulphate. The acid should be in powder form, and in this regard acid is used broadly to include a soluble powder, e.g. an acid anhydride, which will not adversely affect the iodine solution's cleaning properties, but which will dissolve to provide an acid solution.
The iodophor composition may also include a filler material which serves to reduce the proportion of active ingredients present in the composition, to facilitate use, handling, dispensing, etc., of the composition and combat accidental excessive and hence expensive consumption of the active ingredients.
The filler material may thus comprise an inert, water-soluble salt such as sodium chloride, sodium sulphate, or the like, which will not adversely affect the stability of the dry powder iodophor composition, and will not be active in an aqueous solution thereof to adversely affect the solution's cleaning/sanitizing properties.
Further, the iodophor composition may include a surfactant such as nonyl phenol ethoxylate or a linear alcohol, which may serve as a wetting agent for the acid, thus enchancing its penetrating and hence its cleaning action, and may further serve to provide the composition with detergent properties.
Thus, for a dairy and its equipment for example, a single-stage cleaning process may be provided, the surfactant, as a detergent, removing fatty substances; the acid removing milk scale and like deposits; and the released iodine serving to clean and sanitize generally.
The surfactant may be in the form of a powder or a liquid. When the surfactant is a liquid, the volume included in the composition of the invention must be limited to the value that will still provide a powder composition.
Hence, the maximum suitable proportion of liquid surfactant is about 25% by weight of the composition in which it is included.
The iodophor powder composition in which the surfactant is a liquid, may include an absorbent carrier material wherein the liquid surfactant is absorbed, to maintain a dry powder form of the iodophor composition. The absorbent carrier material may be a suitable silica for example.
The relative proportions of the essential constituents of the iodophor composition of the invention may be varied within certain limits. For example, an iodophor composition comprising potassium iodide, sodium perborate, polyvinylpyrrolidone, and sulphamic acid, may include 0.5 to 1 5% by weight of potassium iodide as the iodide salt, 0.5 to 25% by weight of sodium perborate as the oxidising agent, 0.5 to 30% by weight of polyvinylpyrrolidone as the polymer, and 0.5 to 98.5% by weight of sulphamic acid as the acid.
The relative proportions of the constituents may be determined by the particular application for which the composition is intended.
For example, when the composition is used for cooling towers, its descaling property will assume greater importance than its sanitizing property, and the composition will include preferably a relatively high proportion of the acid and a relatively low proportion of the iodide which can nevertheless act as a slimicide. On the other hand, when the composition is used in dairies, its cleaning and sanitizing properties are the more important, and then the composition will include preferably a relatively high proportion of the iodide.
It will be appreciated that the required proportion by weight of a particular metal iodide in the composition will also depend upon the relative atomic weights of the metal and the iodine constitutents of the iodide. If, for example, a first metal with a low atomic weight were replaced by a second metal with a higher atomic weight in the iodide, a correspondingly greater amount of the iodide of the second metal would be required, in order that an equivalent amount of iodine be present in both iodides.
The specific nature and relative proportions of the oxidising agent, polymer, and acid constituents may be largely dependent upon the iodide constituent, and may be determined by simple calculation, once it has been decided what the required proportion of a particular metal iodide in the iodophor composition is to be.
The composition of the invention is prepared by a simple mixing of the constituents.
However, the sequence in which the constituents are admixed is significant.
The preferred mixing order includes mixing the acid and the polymer together; thereafter adding the iodide thereto with mixing; and finally adding the oxidising agent and any other constituents thereto with mixing. The polymer should be present before the iodide or oxidising agent are in the mixture, as it acts to absorb any iodine liberated by their reacting together, which iodine would otherwise be lost from the powder. Further, by adding the acid constituent before the iodide and oxidising agent are added, discolouration which may be caused by liberation of the iodine, may be avoided.
The invention also extends to a cleaning/ sanitizing solution comprising an iodophor powder composition according to the invention, dissolved in water. In the presence of water, preferably at a pH of below 5, the iodide of the composition is oxidised to iodine by the oxidising agent. In use, therefore, the powder composition of the invention is dissolved in water and diluted to provide a suitable acidic solution in which the concentration of iodine available for cleaning/santizing, is approximately 25 to 100 ppm, and preferably 50 to 100 ppm.
The choice of iodine concentration within this range will depend on the intended usage of the solution. For example, a higher concentration of iodine would be preferable in a solution intended for use in a dairy, brewery, or the like, where the cleaning and sanitizing standards would be higher than for a cooling tower, for example.
The mode of use of the solution will, to some extent, also depend on its intended usage. The solution may be applied by spraying, by circulating it (by pumping, if necessary) through pipes and the like, and/or by immersion of equipment or the like in the soltition.
Spraying may be particularly suitable for dairy and brewery equipment, especially for use in situ cleaning, and/or for cleaning/sanitizing large vessels. Abattoir and butchery equipment may be more suitably treated by immersion in the solution.
Subsequent rinsing with water of surfaces treated with the solution, is optional. In dairies for example, instead of rinsing, the first few litres of milk passed along treated surfaces may serve to flush the solution out of the equipment, etc., and thereafter be discarded.
EXAMPLE
An iodophor composition according to the invention was prepared as follows:
(a) 90.5% by weight of sulphamic acid was mixed with 5.0% by weight af polyvinylpyrrolidone polymer available from GAF Corporation as PVP K30 Grade;
(b) 2.5% by weight of potassium iodide was admixed to the acid/polymer mixture; and
(c) finally, 2.0% by weight of sodium perborate (an oxidising agent) was mixed therewith.
Shortly before use, the composition was dissolved in water and diluted to provide a solution in which the available iodine concentration was approximately 80 ppm.
The solution was successfully used to provide a single-stage cleaning process for dairy equipment.
Advantages of the powder iodophor composition include its low foaming property. lodophors based on surface-active agents generally have a strong tendency to foam. The composition of the invention only optionally includes a surfactant and can therefore be prepared in a form that is low-foaming and hence particularly suitable for many industrial cleaning and sanitizing operations, which includes spray-cleaning and/or in situ cleaning, for example for dairy and brewery equipment.
Other advantages of the composition at least as exemplified, include its stability in powder form, even in the presence of the oxidising agent of the composition, and the number and variety of applications for which it appears to be suitable.
Another important advantage of the composition is its optional use in a single-stage cleaning operation. This tends to reduce the time normally required for cleaning/maintenance operations, and tends to increase the periods of effective usage of equipment and the like, and so reduce costs.
Claims (14)
1. An iodophor powder composition which comprises an iodide salt; an oxidising agent which is stable in the dry form, and is capable of releasing iodine from the iodide salt in a solution formed by dispersing the powder composition in water; a polymer capable of forming a polymer-iodine complex and of sub sequently making available a soluble form of the iodine; and an acid.
2. An iodophor powder composition as claimed in claim 1, wherein the iodide is an alkali metal iodide.
3. An iodophor powder composition as claimed in claim 1 or claim 2, wherein the oxidising agent is sodium perborate.
4. An iodophor powder composition as claimed in any one of claims 1 to 3 wherein the polymer is polyvinylpyrrolidone.
5. An iodophor powder composition as claimed in any one of claims 1 to 4 wherein the acid is selected from the group consisting in sulphamic acid, citric acid, and sodium bisulphate.
6. An iodophor powder composition as claimed in any one of claims 1 to 5, which includes a filler material.
7. An iodophor powder composition as claimed in claim 6 wherein the filler material is an inert water soluble salt.
8. An iodophor powder composition as claimed in any one of claims 1 to 7 which includes a surfactant.
9. An iodophor powder composition as claimed in claim 8 in which the surfactant is a liquid, the composition including an absorbent carrier material wherein the liquid surfactant is absorbed.
10. An iodophor powder composition as claimed in claim 1, which includes 0.5 to 1 5% by weight of potassium iodide as the iodide salt, 0.5 to 25% by weight of sodium perborate as the oxidising agent, 0.5 to 30% by weight of polyvinylpyrrolidone as the polymer, and 0.5 to 98.5% by weight of sulphamic acid as the acid.
11. An iodophor powder composition, substantially as herein described and exemplified.
1 2. A cleaning/sanitizing solution comprising an iodophor powder composition as claimed in any one of the preceding claims, dissolved in water.
1 3. A cleaning/sanitizing solution, substantially as herein described and exemplified.
14. A method of preparing an iodophor powder composition as claimed in any one of claims 1 to 11 which includes mixing the acid and the polymer together; thereafter adding the iodide thereto with mixing; and finally adding the oxidising agent and any other constituents thereto with mixing.
1 5. A method of preparing an iodophor powder composition substantially as herein described and exemplified.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ZA806255 | 1980-10-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB2084875A true GB2084875A (en) | 1982-04-21 |
Family
ID=25574973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8130421A Withdrawn GB2084875A (en) | 1980-10-09 | 1981-10-08 | Iodophor powder composition |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2084875A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0120301A3 (en) * | 1983-03-02 | 1986-06-04 | Euro-Celtique S.A. | Method of producing standardized iodophor preparations and such preparations |
| WO1989000006A1 (en) * | 1987-07-01 | 1989-01-12 | Novapharm Research Pty. Ltd. | Biocidal composition |
| EP0232737A3 (en) * | 1986-01-16 | 1990-09-05 | Ppg Industries, Inc. | Halophor composition |
| AU622413B2 (en) * | 1987-07-01 | 1992-04-09 | Novapharm Research Pty. Ltd. | Biocidal composition |
| FR2702930A1 (en) * | 1993-03-26 | 1994-09-30 | Diversey Corp | Advanced iodophores, their production and use. |
| US5409697A (en) * | 1987-07-01 | 1995-04-25 | Novapharm Research Pty. Ltd. | Biocidal composition |
| RU2246953C1 (en) * | 2003-10-22 | 2005-02-27 | Федеральное государственное унитарное предпряитие "Государственный научный центр "Научно-исследовательский институт органических полупродуктов и красителей" (ФГУП "ГНЦ "НИОПИК") | Disinfecting agent |
-
1981
- 1981-10-08 GB GB8130421A patent/GB2084875A/en not_active Withdrawn
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0120301A3 (en) * | 1983-03-02 | 1986-06-04 | Euro-Celtique S.A. | Method of producing standardized iodophor preparations and such preparations |
| EP0232737A3 (en) * | 1986-01-16 | 1990-09-05 | Ppg Industries, Inc. | Halophor composition |
| WO1989000006A1 (en) * | 1987-07-01 | 1989-01-12 | Novapharm Research Pty. Ltd. | Biocidal composition |
| AU622413B2 (en) * | 1987-07-01 | 1992-04-09 | Novapharm Research Pty. Ltd. | Biocidal composition |
| US5409697A (en) * | 1987-07-01 | 1995-04-25 | Novapharm Research Pty. Ltd. | Biocidal composition |
| FR2702930A1 (en) * | 1993-03-26 | 1994-09-30 | Diversey Corp | Advanced iodophores, their production and use. |
| GB2276546A (en) * | 1993-03-26 | 1994-10-05 | Diversey Corp | Iodophor preparation |
| US5558881A (en) * | 1993-03-26 | 1996-09-24 | Diversey Corporation | Iodophors, production and use thereof |
| GB2276546B (en) * | 1993-03-26 | 1997-10-01 | Diversey Corp | Improved iodophors,production and use thereof |
| RU2246953C1 (en) * | 2003-10-22 | 2005-02-27 | Федеральное государственное унитарное предпряитие "Государственный научный центр "Научно-исследовательский институт органических полупродуктов и красителей" (ФГУП "ГНЦ "НИОПИК") | Disinfecting agent |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |