CA1230281A - Method and tablet for sanitizing toilets - Google Patents
Method and tablet for sanitizing toiletsInfo
- Publication number
- CA1230281A CA1230281A CA000462503A CA462503A CA1230281A CA 1230281 A CA1230281 A CA 1230281A CA 000462503 A CA000462503 A CA 000462503A CA 462503 A CA462503 A CA 462503A CA 1230281 A CA1230281 A CA 1230281A
- Authority
- CA
- Canada
- Prior art keywords
- tablet
- chloride
- dichloroisocyanuric acid
- toilet
- alkali metal
- 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
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L9/00—Disinfection, sterilisation or deodorisation of air
- A61L9/015—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone
- A61L9/04—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone using substances evaporated in the air without heating
- A61L9/05—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone using substances evaporated in the air without heating specially adapted to be released by contact with a liquid, e.g. for toilets
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
- C11D17/0047—Detergents in the form of bars or tablets
- C11D17/0056—Lavatory cleansing blocks
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/395—Bleaching agents
- C11D3/3955—Organic bleaching agents
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- General Health & Medical Sciences (AREA)
- Organic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Plant Pathology (AREA)
- Dentistry (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Epidemiology (AREA)
- Animal Behavior & Ethology (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Pest Control & Pesticides (AREA)
- Inorganic Chemistry (AREA)
- Agronomy & Crop Science (AREA)
- Detergent Compositions (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
METHOD AND TABLET FOR SANITIZING TOILETS ABSTRACT Disclosed is a tablet suitable for disinfecting a flush toilet comprising an alkali metal salt of dichloroisocyanuric acid and either calcium chloride or barium chloride, in which the mole ratio of the alkali metal salt of dichloroisocyanuric acid to chloride salt is no greater than 4:1. Also disclosed is a method of using the tablet.
Description
Ed AYE
METHOD AND TABLET FOR SANITIZING TOILETS
. _ _ FIELD OF THE INVENTION
-This invention relates to sanitizing and disinfecting flush toilets. More particularly, this invention relates to automatic toilet bowl cleaners.
BACKGROUND
A number of different compositions and methods for disinfecting flush -toilets have been proposed. These include various hypochlorite and chloramine compounds, that can be dispensed from a single-compartment dispenser, such as is described in US. Patent 4,318,891, or from a two-compartment dispenser such as is described in US. Patent 3,618,143 or 4,208,746. The disinfecting composition can be employed as granules, but is more commonly employed as a tablet.
In order to act effectively in automatic toilet bowl cleaners, the disinfectant tablet must have a number of properties. The tablet should - 20 produce a disinfectant concentration from about 2 to about 30 parts per million, preferably from about 5 to about 20 parts per million, per flush. The tablet must not produce objectionable chloramine or other objectionable odors. The tablets must retain their integrity throughout the useful life of the toilet bowl cleaner and must not crumble or disintegrate so as to plug the various holes and passages in the dispenser, through which water is circulated as the toilet tank fills and drains.
.,. . .
METHOD AND TABLET FOR SANITIZING TOILETS
. _ _ FIELD OF THE INVENTION
-This invention relates to sanitizing and disinfecting flush toilets. More particularly, this invention relates to automatic toilet bowl cleaners.
BACKGROUND
A number of different compositions and methods for disinfecting flush -toilets have been proposed. These include various hypochlorite and chloramine compounds, that can be dispensed from a single-compartment dispenser, such as is described in US. Patent 4,318,891, or from a two-compartment dispenser such as is described in US. Patent 3,618,143 or 4,208,746. The disinfecting composition can be employed as granules, but is more commonly employed as a tablet.
In order to act effectively in automatic toilet bowl cleaners, the disinfectant tablet must have a number of properties. The tablet should - 20 produce a disinfectant concentration from about 2 to about 30 parts per million, preferably from about 5 to about 20 parts per million, per flush. The tablet must not produce objectionable chloramine or other objectionable odors. The tablets must retain their integrity throughout the useful life of the toilet bowl cleaner and must not crumble or disintegrate so as to plug the various holes and passages in the dispenser, through which water is circulated as the toilet tank fills and drains.
.,. . .
-2- AYE
The most commonly used disinfectant tablet materials are calcium hypochlorite and trichloroiso-cyan uric acid. Each of these substances has major drawbacks. Calcium hypochlorite contains insoluble components that can plug the holes in the dispenser, and also contributes to water hardness and scale formation by adding calcium ions to the water. Trichloroiso-cyan uric acid is a strong acid and can produce objection-able chloramine odors under some circumstances.
A disinfectant tablet that produces an appropriate concentration of disinfectant, with the requisite lifetime and tablet integrity, and without the negative properties discussed above would be an advance-mint in the art.
SUMMARY OF THE INVENTION
. .
This invention provides a tablet suitable for disinfecting a flush -toilet, comprising an alkali metal salt of dichloroisocyanuric acid, preferably sodium dlchlorolsocyanuric cold dehydrate, and a chloride salt selected from the group consisting of calcium chloride and barium chloride, preferably calcium chloride dehydrate and barium chloride dehydrate, in which the molar ratio of alkali metal dichloroisocyanuric acid to chloride salt is no greater than 4:1, preferably no greater than 3:1, and most preferably substantially stolchlometric. The tablet preferably contains at least about 40% alkali metal dlchloroisocyanuric acid more, preferably at least about 50%, and most prefer-ably at least 60%. The table-t also preferably contains a mold release agent, such as boric acid or moo-glycerol Stewart. This invention also provides a method for disinfecting a flush toilet comprising contacting a tablet as described above with the water provided to flush the toilet, particularly where the water provided to flush the toilet is contained in a tank that is part of the toilet.
21~3~
I AYE
DESCRIPTION OF THE INVENTION
Jo The use of alkali metal salts of dlchloro-isocyanuric acid in tabulated toilet bowl disinfects has a major drawback in that their volubility in water is large enough so that the tablets do not have sufficient lifetime. The tablets of this invention reduce the volubility of the alkali metal salt of dichloroiso-cyan uric acid by providing barium and calcium ions that can react with the dichloroisocyanuric acid to form either barium di(dichloroisocyanuric acid) or calcium di(dichloroisocyanuric acid). These diva lent metal salts are less soluble than the alkali metal-salts, and the tablet exhibits this lower volubility. In short, the tablet behaves as though it were made, at least in part, of barium di(dichloroisocyanuric acid or calcium di(dichloroisocyanuric acid), instead of the more common, and less costly, alkali metal salts of dichloro-isocyanuric acid.
In theory, this same approach ought to work with a variety of diva lent metal salts. However, the formulation must be tablet table in order to be useful with the dispensers that are commonly used with toilet bowl cleaners. The dispenser normally includes a con-trainer for the disinfectant tablet with openings or passages through which water flows during the flushing cycle In this way, the tablet becomes partially or fully immersed in water, and dissolves to release the disinfectant. This solution is dispensed to the toilet during flushing. This type of dispenser is disk closed in US. Patent 3,618,143 and US. Patent 4,208,747.
In this type of dispenser, and other dispensing systems, it is necessary that the tablet maintain its integrity, so that water can flow around the tablet to get the appropriate dissolution of disinfectant, and so that the openings and passages do not get clogged. The I
I AYE
formulations of this invention form tablets that do not disintegrate in water as do many other formulations containing other diva lent metal compounds. This tablet integrity is central to the operation of this invention.
The tablets of this invention are particularly suited to use in dispensers of the type discussed above, but can also be used with other disinfecting systems where tablet integrity is either necessary or desirable, such as "under the rim" toilet bowl cleaners, in which lo flushing water washes over a tablet hung under the toilet bowl rim.
The alkali metal salt of dichloroisocyanuric acid that can be used with this invention can be either potassium or sodium, with sodium being preferred. It is also preferred that the alkali metal salt of - dichloroisocyanuric acid be fully hydrated. Sodium dichloroisocyanuric acid dehydrate is the most preferred species It is preferred that the tablet be at least about 40% by weight, more preferably at least about 50%
and most preferably at least about 60% by weight alkali metal salt of dichloroisocyanuric acid.
In order for the tablets of this invention to function, there must be sufficient barium chloride or calcium chloride to convert a substantial portion of the alkali metal salt to the calcium or barium salt. Good results are obtained when the mole ratio of dichloro-isocyanuric acid to barium or calcium is no greater than 4:1, preferably no greater than 3:1, most preferably no greater than 2:1 (which is the stoichiometric amount).
It is also possible to use an excess of barium chloride or calcium chloride.
In addition to the ingredients discussed above the tablets may also contain additional ingredients.
Trichloroisocyanuric acid may be added to increase the amount of available chlorine in the formulation.
"Available chlorine" is a commonly used term which means 3C~
the amount of active chlorine by weight in a keeps-lion compared with the amount of active chlorine by weight in chlorine gas, expressed as a percent. If the amount of trichloroisocyanuric acid in the composition is too large, objectionable chloramine odors can be produced The tablets may contain tabulating aids, such as lubricants, mold release agents, binders, etc. The most commonly used mold release agents are boric acid and monoglyceryl Stewart. It is preferred that the formulation contain about 2% mold release agent. The formulation may also include a filler, such as sodium chloride. The filler can act to reduce volubility, assist in tabulating, or perform other functions.
It is preferred that all of the components of the formulation be fully hydrated, so that hydration does not occur after tabulating, which can be harmful to tablet integrity.
The tablet of this invention can either be used alone, to provide disinfection of the toilet bowl, or, preferably, in combination with another tablet that provides a detergent or surfactant, a perfume, a dye, and the like, to provide more complete toilet bowl cleaning.
The following Examples are intended to thus-irate this invention, and are not intended in any limiting sense In the Examples, as well as in the discussion above, all parts and percentages are by weight, unless otherwise specified.
Tablets were prepared with 1.75 inch (3.8 cm.) diameter on a press at 9100-9800 psi (62,700 - 67,500 spa) of pressure. The tablets contained 33 g with the compositions indicated. Sodium dichloroisocyanuric acid dehydrate (NaC12CYA OWE) was used as the alkali metal dichloroisocyanuric acid. Additionally, each tablet contained 1% H3BO3 and 0~5% monoglyceryl , Stewart, to act as mold release agents. The tablets were placed in a dispenser similar to that described in US. Patent 4,208,747, and the dispenser was placed in a container of water To simulate flushing of a toilet, the dispenser periodically was raised out of -the water and allowed to drain. The amount of active chlorine dispensed was determined amperometrically, and the concentration, in parts per million released to a toilet was estimated and reported as "Pam Chlorine". The lifetime, in days, was also estimated.
Many tablets swelled and disintegrated, so these data were not available.
The results are reported in Table I.
TABLE I
. _ 15 Example Est.Life-Number Composition Pam Chlorine time Days 1. 66% NaC12CYA~2H2O 3 - 4 30 33% Buick 2. 74% NaC12CYA-2H2O 19 -24 30 25% Buick
The most commonly used disinfectant tablet materials are calcium hypochlorite and trichloroiso-cyan uric acid. Each of these substances has major drawbacks. Calcium hypochlorite contains insoluble components that can plug the holes in the dispenser, and also contributes to water hardness and scale formation by adding calcium ions to the water. Trichloroiso-cyan uric acid is a strong acid and can produce objection-able chloramine odors under some circumstances.
A disinfectant tablet that produces an appropriate concentration of disinfectant, with the requisite lifetime and tablet integrity, and without the negative properties discussed above would be an advance-mint in the art.
SUMMARY OF THE INVENTION
. .
This invention provides a tablet suitable for disinfecting a flush -toilet, comprising an alkali metal salt of dichloroisocyanuric acid, preferably sodium dlchlorolsocyanuric cold dehydrate, and a chloride salt selected from the group consisting of calcium chloride and barium chloride, preferably calcium chloride dehydrate and barium chloride dehydrate, in which the molar ratio of alkali metal dichloroisocyanuric acid to chloride salt is no greater than 4:1, preferably no greater than 3:1, and most preferably substantially stolchlometric. The tablet preferably contains at least about 40% alkali metal dlchloroisocyanuric acid more, preferably at least about 50%, and most prefer-ably at least 60%. The table-t also preferably contains a mold release agent, such as boric acid or moo-glycerol Stewart. This invention also provides a method for disinfecting a flush toilet comprising contacting a tablet as described above with the water provided to flush the toilet, particularly where the water provided to flush the toilet is contained in a tank that is part of the toilet.
21~3~
I AYE
DESCRIPTION OF THE INVENTION
Jo The use of alkali metal salts of dlchloro-isocyanuric acid in tabulated toilet bowl disinfects has a major drawback in that their volubility in water is large enough so that the tablets do not have sufficient lifetime. The tablets of this invention reduce the volubility of the alkali metal salt of dichloroiso-cyan uric acid by providing barium and calcium ions that can react with the dichloroisocyanuric acid to form either barium di(dichloroisocyanuric acid) or calcium di(dichloroisocyanuric acid). These diva lent metal salts are less soluble than the alkali metal-salts, and the tablet exhibits this lower volubility. In short, the tablet behaves as though it were made, at least in part, of barium di(dichloroisocyanuric acid or calcium di(dichloroisocyanuric acid), instead of the more common, and less costly, alkali metal salts of dichloro-isocyanuric acid.
In theory, this same approach ought to work with a variety of diva lent metal salts. However, the formulation must be tablet table in order to be useful with the dispensers that are commonly used with toilet bowl cleaners. The dispenser normally includes a con-trainer for the disinfectant tablet with openings or passages through which water flows during the flushing cycle In this way, the tablet becomes partially or fully immersed in water, and dissolves to release the disinfectant. This solution is dispensed to the toilet during flushing. This type of dispenser is disk closed in US. Patent 3,618,143 and US. Patent 4,208,747.
In this type of dispenser, and other dispensing systems, it is necessary that the tablet maintain its integrity, so that water can flow around the tablet to get the appropriate dissolution of disinfectant, and so that the openings and passages do not get clogged. The I
I AYE
formulations of this invention form tablets that do not disintegrate in water as do many other formulations containing other diva lent metal compounds. This tablet integrity is central to the operation of this invention.
The tablets of this invention are particularly suited to use in dispensers of the type discussed above, but can also be used with other disinfecting systems where tablet integrity is either necessary or desirable, such as "under the rim" toilet bowl cleaners, in which lo flushing water washes over a tablet hung under the toilet bowl rim.
The alkali metal salt of dichloroisocyanuric acid that can be used with this invention can be either potassium or sodium, with sodium being preferred. It is also preferred that the alkali metal salt of - dichloroisocyanuric acid be fully hydrated. Sodium dichloroisocyanuric acid dehydrate is the most preferred species It is preferred that the tablet be at least about 40% by weight, more preferably at least about 50%
and most preferably at least about 60% by weight alkali metal salt of dichloroisocyanuric acid.
In order for the tablets of this invention to function, there must be sufficient barium chloride or calcium chloride to convert a substantial portion of the alkali metal salt to the calcium or barium salt. Good results are obtained when the mole ratio of dichloro-isocyanuric acid to barium or calcium is no greater than 4:1, preferably no greater than 3:1, most preferably no greater than 2:1 (which is the stoichiometric amount).
It is also possible to use an excess of barium chloride or calcium chloride.
In addition to the ingredients discussed above the tablets may also contain additional ingredients.
Trichloroisocyanuric acid may be added to increase the amount of available chlorine in the formulation.
"Available chlorine" is a commonly used term which means 3C~
the amount of active chlorine by weight in a keeps-lion compared with the amount of active chlorine by weight in chlorine gas, expressed as a percent. If the amount of trichloroisocyanuric acid in the composition is too large, objectionable chloramine odors can be produced The tablets may contain tabulating aids, such as lubricants, mold release agents, binders, etc. The most commonly used mold release agents are boric acid and monoglyceryl Stewart. It is preferred that the formulation contain about 2% mold release agent. The formulation may also include a filler, such as sodium chloride. The filler can act to reduce volubility, assist in tabulating, or perform other functions.
It is preferred that all of the components of the formulation be fully hydrated, so that hydration does not occur after tabulating, which can be harmful to tablet integrity.
The tablet of this invention can either be used alone, to provide disinfection of the toilet bowl, or, preferably, in combination with another tablet that provides a detergent or surfactant, a perfume, a dye, and the like, to provide more complete toilet bowl cleaning.
The following Examples are intended to thus-irate this invention, and are not intended in any limiting sense In the Examples, as well as in the discussion above, all parts and percentages are by weight, unless otherwise specified.
Tablets were prepared with 1.75 inch (3.8 cm.) diameter on a press at 9100-9800 psi (62,700 - 67,500 spa) of pressure. The tablets contained 33 g with the compositions indicated. Sodium dichloroisocyanuric acid dehydrate (NaC12CYA OWE) was used as the alkali metal dichloroisocyanuric acid. Additionally, each tablet contained 1% H3BO3 and 0~5% monoglyceryl , Stewart, to act as mold release agents. The tablets were placed in a dispenser similar to that described in US. Patent 4,208,747, and the dispenser was placed in a container of water To simulate flushing of a toilet, the dispenser periodically was raised out of -the water and allowed to drain. The amount of active chlorine dispensed was determined amperometrically, and the concentration, in parts per million released to a toilet was estimated and reported as "Pam Chlorine". The lifetime, in days, was also estimated.
Many tablets swelled and disintegrated, so these data were not available.
The results are reported in Table I.
TABLE I
. _ 15 Example Est.Life-Number Composition Pam Chlorine time Days 1. 66% NaC12CYA~2H2O 3 - 4 30 33% Buick 2. 74% NaC12CYA-2H2O 19 -24 30 25% Buick
3. 74% NaC12CYA-2H2O 4 -20 14 25% Cook JO 74% NalC12CYA-2H2O tablet 25% Cook disintegrated 5. 7 % Nay SUE 2 tablet 25% McCoy OWE disintegrated 6. 66% NaC12CYA~2H2O tablet 26% McCoy OWE disintegrated 7% Nail 7. 74~ NaC12CYA OWE tablet 25% SrC12~2H2O disintegrated 8. 74% NaC12CYA~2H2O tablet 25% Zn(C2H3O2)2~2H2O disintegrated As can be seen from the data of Table I, mix-lures of alkali metal dichloroisocyanuric acid and ~23~
diva lent metal compounds are very difficult to tablet.
The only compounds with which tablets could success-fully be made are barium chloride and calcium chloride.
Tablets were made in similar manner, with similar diameter to those in Examples 1 - 8, except that 50 g of the composition was used. Tablets were prepared using barium chloride and calcium chloride, and sodium dichloroisocyanuric acid at the indicated percentages along with 1% H3BO3 and 1% monoglyceryl Stewart. The tablets were placed in a dispenser similar to that used in Examples 1 - 8, which was placed in the tank of a standard flush toilet, adapted -to flush automatically approximately hourly.
Samples of the water were taken periodically and were analyzed as in Examples 1 - 8 for chlorine concentra-lion in parts per million reported as "Pam Chlorine", and the lifetime of the tablets was determined, assuming approximately 10 flushes per day. The results, along with the mole ratio of NaC12CYA OWE
to barium or calcium, are shown in Table II.
TABLE II
En, Mole Pam lifetime No, Composition RatioChlorine(days) 9. 74% NaC12CYA-2H2O 2.94 3 - 20 ~30 24% Buick 10. 66% NaC12CYA OWE 1.98 3 - 6 ~20 24% Buick OWE
11. 74% NaC12CYA OWE 1.77 6 - 34 8 32% Cook 12. 76% NaC12CYA OWE 1.98 - 2 22% Cook Each of the tablets maintained its integrity throughout the test. The lifetime of the tablets, particularly those using calcium chloride was shorter ~23QZ~3~
than the 30 days sought for most commercial toilet bowl cleaners This could be remedied by increasing the size of the tablet, adding a filler to decrease sealability of the tablet, or both. By making these fairly minor adjustments, a toilet bowl formulation could be made to take advantage of the good tabulating characteristics of these formulations.
diva lent metal compounds are very difficult to tablet.
The only compounds with which tablets could success-fully be made are barium chloride and calcium chloride.
Tablets were made in similar manner, with similar diameter to those in Examples 1 - 8, except that 50 g of the composition was used. Tablets were prepared using barium chloride and calcium chloride, and sodium dichloroisocyanuric acid at the indicated percentages along with 1% H3BO3 and 1% monoglyceryl Stewart. The tablets were placed in a dispenser similar to that used in Examples 1 - 8, which was placed in the tank of a standard flush toilet, adapted -to flush automatically approximately hourly.
Samples of the water were taken periodically and were analyzed as in Examples 1 - 8 for chlorine concentra-lion in parts per million reported as "Pam Chlorine", and the lifetime of the tablets was determined, assuming approximately 10 flushes per day. The results, along with the mole ratio of NaC12CYA OWE
to barium or calcium, are shown in Table II.
TABLE II
En, Mole Pam lifetime No, Composition RatioChlorine(days) 9. 74% NaC12CYA-2H2O 2.94 3 - 20 ~30 24% Buick 10. 66% NaC12CYA OWE 1.98 3 - 6 ~20 24% Buick OWE
11. 74% NaC12CYA OWE 1.77 6 - 34 8 32% Cook 12. 76% NaC12CYA OWE 1.98 - 2 22% Cook Each of the tablets maintained its integrity throughout the test. The lifetime of the tablets, particularly those using calcium chloride was shorter ~23QZ~3~
than the 30 days sought for most commercial toilet bowl cleaners This could be remedied by increasing the size of the tablet, adding a filler to decrease sealability of the tablet, or both. By making these fairly minor adjustments, a toilet bowl formulation could be made to take advantage of the good tabulating characteristics of these formulations.
Claims (15)
1. A tablet suitable for disinfecting a flush toilet, comprising an alkali metal salt of dichloroisocyanuric acid and a chloride salt selected from calcium chloride and barium chloride, where the molar ratio of alkali metal dichloroisocyanuric acid to chloride salt is no greater than 4:1.
2. The tablet of Claim 1 wherein the alkali metal salt of dichloroisocyanuric acid is sodium dichloroisocyanuric acid dihydrate.
3. The tablet of Claim 2, in which the chloride salt is calcium chloride dihydrate.
4. The tablet of Claim 2 in which the chloride salt is barium chloride dihydrate.
5. The tablet of Claim 1, further comprising a mold release agent.
6. The tablet of Claim 1 wherein the chloride salt is calcium chloride.
7. The tablet of Claim 1 wherein the chloride salt is barium chloride.
8. The tablet of Claim 1, wherein the mole ratio of alkali metal dichloroisocyanuric acid to chloride salt is no greater than 3:1.
9. The tablet of Claim 1 wherein the mole ratio of alkali metal dichloroisocyanuric acid to chloride salt is substantially stoichiometric.
10. A tablet suitable for disinfecting a flush toilet, comprising at least about 40% by weight of sodium dichloroisocyanuric acid dihydrate, a chloride salt selected from the group consisting of barium chloride dihydrate and calcium chloride dihydrate, and one or more mold release agents, in which the mole ratio of sodium dichloroisocyanuric acid to chloride salt is no greater than 3:1.
11. The tablet of Claim 10 in which the mole ratio of sodium dichloroisocyanuric acid to chloride salt is substantially stoichiometric.
12. A method for disinfecting a flush toilet, comprising placing the tablet of Claim 1 in contact with water provided to flush the toilet.
13. The method of Claim 12 wherein the water provided to flush the toilet is contained in a tank.
14. A method for disinfecting a flush toilet, comprising placing the tablet of Claim 10 in contact with water provided to flush the toilet.
15. The method of Claim 14 wherein the water provided to flush the toilet is contained in a tank.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US52979983A | 1983-09-06 | 1983-09-06 | |
| US529,799 | 1983-09-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1230281A true CA1230281A (en) | 1987-12-15 |
Family
ID=24111280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000462503A Expired CA1230281A (en) | 1983-09-06 | 1984-09-05 | Method and tablet for sanitizing toilets |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS6079099A (en) |
| AU (1) | AU559980B2 (en) |
| BE (1) | BE900499A (en) |
| CA (1) | CA1230281A (en) |
| NZ (1) | NZ209450A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996002624A1 (en) * | 1994-07-13 | 1996-02-01 | So-Safe Specialty Products Pty. Ltd. | A cleaning kit and a cleaning composition and methods of use |
-
1984
- 1984-09-05 JP JP18624584A patent/JPS6079099A/en active Granted
- 1984-09-05 BE BE0/213589A patent/BE900499A/en not_active IP Right Cessation
- 1984-09-05 AU AU32738/84A patent/AU559980B2/en not_active Ceased
- 1984-09-05 NZ NZ20945084A patent/NZ209450A/en unknown
- 1984-09-05 CA CA000462503A patent/CA1230281A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0524959B2 (en) | 1993-04-09 |
| AU3273884A (en) | 1985-03-14 |
| BE900499A (en) | 1985-03-05 |
| NZ209450A (en) | 1986-12-05 |
| JPS6079099A (en) | 1985-05-04 |
| AU559980B2 (en) | 1987-03-26 |
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