DESC:FIELD OF THE INVENTION
The present invention relates to surface cleaning formulation. More particularly, the present invention relates to an improved cleaning formulation and a method of controlling insects and pests in the house, hospital, theatre, aircrafts, public urinal, railway, bus stations and other public places. The formulation is applicable for cleaning, preferably to hard surfaces such as tiles, ceramics, marble, granite, porcelain, stone, black stone, metals, glass, stainless steel, steel and the like.

BACKGROUND OF THE INVENTION
Cleaning formulations are primarily intended to maintain a clean environment, although cleaning formulations further containing additives for controlling undesired insects, pests, bacteria and other pathogens were also developed. Liquid compositions which are presently being used for cleaning and treating hard surfaces in diluted and undiluted form usually forms films on the surfaces. These films are undesirable and effectively shining surfaces normally expected. Therefore, a formulation for cleaning is desirable which ensures shining surfaces along with effective in controlling insects.

EP 525,892 is directed to an aqueous liquid detergent composition for cleaning hard surfaces, which contain an insect repellent material such as those within the class of N-alkyl neoalkanamides wherein the alkyl is of 1 to 4 carbon atoms and the neoalkanoyl moiety is of 7 to 14 carbon atoms.

EP 677,579 describes a cleaning composition for hard surfaces which have the capacity to clean as well as repel insects from the hard surface to which they are applied. The effect is achieved by N-lower alkyl neoalkanamides.

The cleaning composition disclosed in EP 677,579 is a micro-emulsion for cleaning kitchen walls, oven top, bathroom floor or the like while at the same time applying a film of insect repellent material which is sufficiently substantive to the surface to which the composition is applied to repel insects therefrom.

WO 04/035723 discloses a cleaning composition comprising antimicrobial agent used for both cleaning surfaces and disinfecting. The composition may further comprise one or more insect repellant agents.

Black Phenyl formulation is known for its disinfectant effect in prior art, but no prior art confirms its sustained surface cleaning effect that could be the cause why such formulations are not suitable for the floors which are frequently used in places for instance such as hospitals, public urinals and railway station etc.

Prior arts formulation failed to provide prolonged surface cleaning and insect controlling effect as no suitable surfactants or emulsifiers were used to clean the surface and to prevent insects, bacteria and other harmful pathogens.

OBJECTIVE OF THE INVENTION
It is an objective of the present invention to provide a novel and cost effective cleaning formulation which is having prolonged surface cleaning effect without any harm to the surface and surroundings and undesirable film forming at the surface.

It is another objective of the present invention to provide a novel cleaning formulation which is also having prolonged insects and pests controlling effect.

It is yet another objective of the present invention to provide a novel cleaning formulation which can be used in houses, hospitals, theatre, aircraft, public urinals, railway, bus stations and other public places preferably to hard surfaces such as tiles, ceramics, marble, granite, porcelain, stone, black stone, metals, glass and the like.

It is another objective of the present invention to provide a method of manufacturing novel cleaning formulation.

SUMMARY OF THE INVENTION
According to one aspect of the invention there is provided a cleaning formulation comprising of:
i) soap solution in the range of 18-20wt.%;
ii) Light Creosote Oil in the range of 13 to 15wt. %;
iii) Preventol KMX (6-chloro-m-cresol, 2-chloro-m-cresol and m-cresol) in the range of 2 to 3wt.%; and
iv) water up to 100wt.%

In an embodiment soap solution of the present invention comprising of:
i) non-ionic surfactant of 10 moles in the range of 4 to 6 wt.%;
ii) non-ionic surfactant of 20 moles in the range of 4 to 6 wt.%;
iii) anionic surfactant of 90 % purity in the range of 4 to 6 wt.%;
iv) foaming agent in the range of 4 to 6 wt.%;
v) optical whitener in the range of 4 to 6 wt.%;
vi) Rosin in the range of 4 to 6 wt.%;
vii) Castor oil in the range of 30 to 32wt.%;
viii) caustic soda flakes in the range of 4 to 5wt.%;
ix) water up to 100 wt.%.

In another embodiment of the present invention, the cleaning composition has a coefficient of viscosity of about 3.0626 X 10-5 Nsm -2 ; density of about 1.2530 Kgm-3 and neutral pH from about 7 to about 8.

In another aspect of the present invention there is provided a method for manufacturing the cleaning formulation, said method comprising the steps of:
i) taking required quantity of Rosin and Castor oil in a container and heating till the mixture become oil like;
ii) adding required quantity of Caustic soda solution to step (i) and heating till it becomes soap like;
iii) continue heating till the sample on paper should not leave an oily stain;
iv) adding required quantity of water to step (ii) and making the soap of step (ii) to liquid soap;
v) adding required quantity of nonyl phenol ethoxylates (10 moles), castor oil ethoxylates (20 moles), Linear alkyl benzene Sulfonic acid –(LABSA) 90%, Sodium Lauryl Ether Sulfate (SLES) 28% and 4,4’-diamino-2,2’-stilbenedisulfonic acid to step (iii) and continue heating;
vi) adding Light Creosote oil (LCO), Preventol KMX (6-chloro-m-cresol, 2-chloro-m-cresol and m-cresol) and water to the boiling mixture of step (v)
vii) stop heating and cooling the mixture at room temperature; and
viii) fill bottles.

In yet another embodiment of the present invention, the disinfectant and germicidal effect of the present cleaning formulation is effective for a period of at least 2-3 days.

The novel cleaning formulation is typically formulated to clean and control insects and pests in the houses, hospitals, theatre, aircraft, public urinal, railway, bus stations preferably to hard surfaces such as tiles, ceramics, marble, granite, porcelain, stone, black stone, metals, glass, stainless steel, steel and the like.

In one of the embodiment of the present invention, the novel cleaning formulation is preferably used for floor cleaning.

DETAILED DESCRIPTION OF THE INVENTION
Discussed below are some representative embodiments of the present invention. The invention in its broader aspects is not limited to the specific details and representative methods. The illustrative examples are described in this section in connection with the embodiments and methods provided. The invention according to its various aspects is particularly pointed out and distinctly claimed in the attached claims read in view of this specification.

So that the invention maybe more readily understood certain terms are first defined and certain test methods are described.

All numeric values are herein assumed to be modified by the term "about," whether or not explicitly indicated. The term "about" generally refers to a range of numbers that one of skill in the art would consider equivalent to the recited value (i.e., having the same function or result). In many instances, the term "about" may include numbers that are rounded to the nearest significant figure.

Weight percent, percent by weight, % by weight, wt., and the like are synonyms that refer to the concentration of a substance as the weight of that substance divided by the weight of the composition and multiplied by 100.

As used in this specification and the appended claims, the singular forms "a," "an," and "the" include plural referents unless the content clearly dictates otherwise. Thus, for example, reference to a composition containing "a compound" includes a mixture of two or more compounds. As used in this specification and the appended claims, the term "or" is generally employed in its sense including "and/or" unless the content clearly dictates otherwise.

The term "surfactant" as used herein is a compound that contains a lipophilic segment and a hydrophilic segment, which when added to water or solvents, reduces the surface tension of the system.

The term "hard surface" refers to a solid, substantially non-flexible surface such as a tiles, ceramics, marble, granite, porcelain, stone, black stone, metals, glass, stainless steel, steel and the like.

The novel cleaning formulation is formulated to clean and disinfect hard surfaces without the damage of any kind of surfaces and with long duration of disinfectant effect.

The present invention provides a novel cleaning formulation which is having prolonged surface cleaning and insects and pests killing effect without harm of the surface. The said formulation comprising:
i) from about 18 to about 20 wt.% novel soap solution;
ii) from about 13 to about 15 wt.% Light Creosote Oil;
iii) from about 2 to about 3 wt.% Preventol KMX (6-chloro-m-cresol, 2-chloro-m-cresol and m-cresol) ; and
iv) water up to 100 wt.%.

The soap solution of the present invention comprising
i) from about 4 to 6 wt.% non-ionic surfactant of 10 moles;
ii) from about 4 to 6 wt.% 20 non-ionic surfactant of 20 moles;
iii) from about 4 to 6 wt.% anionic surfactant of 90 moles;
iv) from about 4 to 6 wt.% foaming agent;
v) from about 4 to 6 wt.% optical whitener;
vi) from about 4 to 6 wt.% Rosin;
vii) from about 30 to 32 wt.% Castor oil;
viii) from about 4 to 5 wt.% caustic soda flakes;
ix) water up to 100 wt.%.

The surfactant used in/or in combination with the cleaning formulation is selected to improve the cleaning performance of cleaning formulation. The surfactant can also provide the detergency to the improved cleaning composition to facilitate in removal of soil, oil and grease from the hard surface. The surfactant can also reduce the amount of re-deposition of soils on to the hard surfaces.

In preferred embodiment of the invention, the non-ionic surfactants of 10 moles and 20 moles are Nonyl phenol Ethoxylates and Castor oil Ethoxylates respectively where the anionic surfactant is 90% Linear Alkyl Benzene Sulfonic Acid (LABSA).

Ethoxylated chemicals (Non-ionic surfactants): Ethoxylated chemicals are widely used in detergent or cleaning formulations because of their high dispersing, wetting and solubilizing properties.

In preferred embodiment of the invention, the non-ionic surfactants of 10 moles and 20 moles are Nonyl phenol Ethoxylates and Castor oil Ethoxylates respectively.

Nonyl phenol ethoxylates (10 moles)

Formula: C9H19C6H4(OCH2CH2)nOH
Nonyl phenol ethoxylates are widely used in detergents because of their wetting and dispersing property. They are composed of ethylene oxide adduct of Nonyl Phenol. Preferably, the novel cleaning composition contains high-mole ethoxylates up to 10 moles. The high-mole ethoxylates greater than 7 moles and above are soluble in water and in most polar solvents. In general with increase in the ethylene oxide chain attached to Nonyl phenol hydrphobe increases the HLB value (water solubility), pour point, viscosity and flash point of the ethoxylates.

Castor oil ethoxylates (20 moles)
Castor oil ethoxylates are composed of ethylene oxide adduct of castor oil having HLB value 9.8. It also provides hydrophilicity to the formulation. Saponification value of castor oil ethoxylates is 85±5. The term saponification value here refers to the milligrams of potassium hydroxide required for the saponification of 1 g of substance particularly fats.

Non- ionic surfactants are preferably present in the range of 4-6 wt.%.

Preferably Anionic Surfactants of the present invention is Linear Alkyl Benzene Sulfonic Acid (LABSA) 90%:

Formula: CH3(CH2)11C6H4SO3H
LABSA is a largest- volume synthetic surfactant. It is used widely due to its low cost, and good performance. It can be dried to a stable powder. Biodegradable in nature therefore environment friendly as it has straight chain. It is preferably present in the present formulation in an amount from about 4 to 6 wt.%.

The soap solution according to the present invention comprises of Rosin constituent. Rosin, is a solid form of resin obtained from pines and some other plants, mostly conifers produced by heating fresh liquid resin to vaporize the volatile liquid components. It is semitransparent and varies in color from yellow to black. It chiefly consists of various resin acids, especially abietic acid and combines with caustic alkalis to form salts (rosinates or pinates) that are known as rosin soaps. Rosin is preferably present in the present formulation in an amount from about 4 to 6 wt. %.

Another component of soap solution is Castor oil. Castor oil is a vegetable oil obtained by pressing the seeds of the castor oil plant (Ricinus communis). The common name “castor oil”, from which the plant gets its name, probably comes from its use as a replacement for castoreum, a perfume base made from the dried perineal glands of beaver (castor in Latin). It is colorless to very pale yellow with a distinct taste and odor. Its boiling point is 313o C (595 oF) and its density is 961 kg/m3. It’s a triglyceride in which approximately 90% of fatty acid chains are ricinoleates, Oleate and linoleates are the other significant components.

Castor oil is preferably present in the present formulation in an amount from about 4 to 6 wt. %.

Caustic soda is added to the rosin and castor oil mixture to form soap solution. Caustic soda flakes free from foreign matter or other visible impurities is used in the present in the invention. Caustic soda is responsible for the saponification.

The concentrate compositions according to the invention may include foaming agent and optical whiteners.

In preferred embodiment of the invention, the foaming agent is Sodium Lauryl Ether Sulfate (SLES),

Preferred optical whitener used herein is 4, 4'-diamino-2,2'- stilbenedisulfonicacid due to its excellent whitening and bleaching properties. Alkylbenzene sulfonic acid is the largest-volume synthetic surfactant used in detergent industry because of its relatively low cost, good performance and it can be dried to stable powder. It is biodegradable therefore environment friendly. Moreover it does not form an insoluble precipitate in hard water.

Foaming agent (Biodegradable): Foam is often regarded as the important measure for the performance of cleaners and detergents.

Sodium Lauryl Ether Sulfate (SLES)

Chemical formula: CH3(CH2)11(OCH2CH2)nOSO3Na
It is inexpensive and a very effective foaming agent.

Optical Whitener

4,4'-diamino-2,2'-stilbenedisulfonic acid is white, water soluble solid and having the Formula: C14H14N2O6S2.

Light Creosote Oil and Preventol KMX (6-chloro-m-cresol, 2-chloro-m-cresol and m-cresol) according to the present invention are used for anti-bacterial properties, to prevent insects and other harmful pathogens.

Creosote is composed of phenol derivatives and contains some quantity of mono-substituted phenols. Adequate quantity i.e. from 13 to about 15 wt. % of Light Creosote Oil is essential for the phenolic coefficient required for the product. Like Phenol, Light Creosote Oil not only has germicidal property but also it disperses well when added to water.

In certain preferred instances, Preventol KMX (6-chloro-m-cresol, 2-chloro-m-cresol and m-cresol) is used for its insecticidal and bactericidal action. It is present in an amount of 1-3wt.%. More preferably in an amount of 2-3wt.%. Preventol KMX is a composition of three constituents: Preferably all the three constituents are present in an equal amount.
Constituent 1: 6-chloro-m-cresol

Constituent 2: 2-chloro-m-cresol

Constituent 3: m-cresol

It keeps the insects like ants, flies, house flies and other common household insects and pests away from the area where it is spread for a long duration of time.

As the cleaning formulation is aqueous, water forms the major constituent. Water is added in order to provide 100 wt. % of the constituent compositions. Water may be tap water, but it is preferably distilled and/or deionized water. If the water is tap water, it is preferably appropriately filtered in order to remove any undesirable impurities such as organics or inorganics, especially mineral salts which are present in hard water which may thus interfere with the operation of other constituents of the invention.

Water is added in amounts which are sufficient to form the concentrated compositions which amount is sufficient to ensure the retention of substantially clear characteristic when produced as a concentrate. This amount may be readily determined by first mixing measured amount of the non-water constituents in suitably sized vessel and then during stirring adding water. Generally, water is present in the concentrate compositions in amounts in excess of about 50 wt. %, preferably in amounts of in excess of about 70 wt. %, but most preferably in amount between 60-70 wt.% based upon the total weight of the concentrate compositions according to the invention.

The present invention also provides a method for manufacturing the cleaning formulation, said method comprising the steps of:
i) providing rosin and castor oil in a container and heating till the mixture becomes oil like;
ii) adding caustic soda solution to step (i) and heating till it becomes soap like;
iii) continue heating till the sample does not leave an oily stain on a paper;
iv) adding water to step (ii) to obtain a liquid soap;
v) adding nonyl phenol ethoxylates (10 moles), castor oil ethoxylates (20 moles), linear alkyl benzene sulfonic acid –(LABSA) 90%, sodium lauryl ether sulfate (SLES) 28% and 4,4’-diamino-2,2’-stilbenedisulfonic acid to step (iii) and continue heating;
vi) adding light creosote oil (LCO), Preventol KMX (6-chloro-m-cresol, 2-chloro-m-cresol and m-cresol) and water to the boiling mixture of step (v) to obtain the cleaning formulation.

The heating according to present process is performed in between 75-800C that ensures no oily stain on paper to confirm the saponification test.

Advantages of the present invention:
i) The invented cleaning formulation provides prolonged surface cleaning and insects and pests controlling effect.
ii) The invented cleaning formulation also provides long disinfectant effect i.e. for minimum 2 to 3 days for disinfectants and germicidal effect.
iii) The invented cleaning formulation can be used in the house, hospital, public urinal, railway station preferably to hard surfaces such as tiles, ceramics, marble, granite, porcelain, stone, black stone, glass, metals, stainless steel, steel and the like.
iv) The invented cleaning formulation is cost effective over prior art formulation.
v) The invented formulation is very economical.

The present invention is now illustrated by the way of non-limiting examples:

Example 1
Formula:
Preparation of Soap Solution
Table 1
S. No. Raw Materials Name Quantity
(in gram) Quantity
(in percentage by weight)
1 Rosin 100g 4%
2 Castor Oil 800g 32%
3 Caustic Soda Flakes 100g 4 to 5%
4 Normal Water 1000g 40%
5 Nonyl phenol Ethoxylates) (10 moles) 100g 4%
6 Castor oil Ethoxylates (Non-ionic)
(20 moles) 100g 4%
7 Linear Alkyl Benzene Sulfonic Acid-(LABSA) 90% 100g 4%
8 Sodium Lauryl Ether Sulfate
(SLES) 100g 4%
9 4, 4'-diamino-2, 2'- stilbenedisulfonic acid
100g 4%
Total 2500g 100%

Preparation of cleaning formulation
Table 2
S. No. Components Quantity
(in gram) Quantity
(in percentage by weight)
1 Final Soap Solution 2500gm 20%
2 Light Creosote Oil (LCO) 1625gm 13%
3 Preventol KMX
(6-chloro-m-cresol, 2-chloro-m-cresol and m-cresol) 250gm 2%
4 Water as Base 8125gm 65%
Total 12500 gm 100%

Preparation of Example Formulation:
Exemplary formulation illustrating certain preferred embodiments of the inventive compositions and described in more detail in Table 1 and 2 above were formulated generally in accordance with the following protocol.
(i) In a suitably sized vessel required quantity (as given in Table 1) of Rosin and Castor oil were heated up to 75 to 80o C till the mixture became oil like;
(ii) 100 g of Caustic soda solution was made and added to the oil like mixture. The resulting mixture is heated till it become soap like. The heating was continued till the sample on paper should not leave an oily stain;
(iii) 1000 g of water was added and liquid soap solution was made;
(iv) required quantity of nonyl phenol ethoxylates (10 moles), castor oil ethoxylates (20 moles), Linear alkyl benzene Sulfonic acid –(LABSA) 90%, Sodium Lauryl Ether Sulfate (SLES) 28% and 4,4’-diamino-2,2’-stilbenedisulfonic acid were added to step (iii) and heating was continued;
(v) to the boiling solution, required quantity of Light Creosote Oil (LCO) and Preventol KMX was added;
(vi) water was added to the required level; and
(vii) heating was stopped and mixture was cooled at room temperature and
(viii) bottles were filled.

The cleaning composition according to the present invention is homogeneous solution, dark black- brown in color and on dilution with water it will give translucent off white to white color therefore it comes under black phenyl.

Evaluation of disinfectant efficacy
Representative compositions of the present invention were evaluated in order to evaluate their germicidal efficacy based on Rideal Walker coefficient (RWC) and Staphylococcal coefficient (SA). The testing was performed in accordance with the protocols outlined in The Bureau of Indian Standards IS: 1061-1997, Amendment No. 5 February 2014. The standards have prescribed 6 separate grades for both black and white type of phenolic disinfectants. The minimum RWC and SA are given in tables below:
Table 3:
Class Grade Minimum RWC Minimum SAC
Black 1 18 –
2 10 –
3 5 –
1A 18 8
2A 10 5
3A 5 2.5
White 1 18 –
2 10 –
3 5 –
1A 18 8
2A 10 5
3A 5 2.5

The novel cleaning product is homogeneous solution dark brown in colour and on dilution with water, it shall give translucent off white to white color.

Staphylococcal coefficient was calculated in a similar way as Rideal Walker Coefficient using Staphylococcus aureus (NCTC 3750) as test organism.

Requirement of staphylococcus coefficient (SA) has been given to ensure that disinfectant fluids are not unduly selective in their germicidal properties.

Results of RWC and SA are indicated in Table 4, below.

Table 4:

Parameters Results Lower limit Upper limit Method
Germicidal Value: 18.94 18 IS: 1061-1997
RWC
(Rideal Walker
Coefficient)
Staphylococcal coefficient 9.41 8 IS: 1061-1997

The results RWC and SA indicate that the novel cleaning product belongs to class Grade 1.

Determination of Viscosity: Viscosity, as heretofore discussed, may be problematic to hard surface cleaners of this invention. In some cleaners, notably those incorporating abrasive granules or other abradents, a higher amount of substantively to the surface treated is desirable. In the present invention, however, high viscosity is undesirable, as the hard surface cleaners encompassed within this invention should be free-flowing and relatively non-substantive to the surface to which it is applied. The resultant coefficient of viscosity of the cleaning composition is 3.0626*10-5 Nsm-2.

In some embodiments, the density of present cleaning formulation is found to be 1.2530 Kgm-3.

The density and coefficient of viscosity of the cleaning formulation are in the range of freely flowing liquids which easily gets dispersed in water. In some other embodiments the pH of the cleaning composition is 7-8. The formulation cleans any surface without any damage of any kind of surface due to its neutral pH.

While the invention has been described and illustrated with reference to certain particular embodiments thereof, those skilled in the art will appreciate that various adaptations, changes, modifications, substitutions, deletions, or additions of procedures and protocols may be made without departing from the spirit and scope of the invention. It is intended, therefore, that the invention be defined by the scope of the claims which follow and that such claims be interpreted as broadly as is reasonable.
,CLAIMS:We Claim:
1. A cleaning formulation with controlled insects and pests controlling effect, comprising:
i) soap solution in the range of 18 to 20 wt.%;
ii) light creosote oil in the range of 13 to 15 wt.%;
iii) Preventol KMX in the range of 2 to 3 wt.%; and
iv) water up to 100 wt.%.

2. The cleaning formulation of claim 1, wherein the soap solution comprises:
i) non-ionic surfactant of 10 moles in the range of 4 to 6 wt.%;
ii) non-ionic surfactant of 20 moles in the range of 4 to 6 wt.%;
iii) anionic surfactant of 90 % purity in the range of 4 to 6 wt.%;
iv) foaming agent in the range of 4 to 6 wt.%;
v) optical whitener in the range of 4 to 6 wt.%;
vi) rosin in the range of 4 to 6 wt.%;
vii) castor oil in the range of 30 to 32 wt.%;
viii) caustic soda flakes in the range of 4 to 5 wt.%;
ix) water up to 100 wt.%.

3. The cleaning formulation of claim 2, wherein the non-ionic surfactant of 10 moles comprises Nonyl phenol Ethoxylates; the non-ionic surfactant of 20 moles comprises Castor oil Ethoxylates; the anionic surfactant comprises Linear Alkyl Benzene Sulfonic Acid (LABSA) 90%; the foaming agent comprises Sodium Lauryl Ether Sulfate (SLES); and the optical whitener is 4,4’-diamino-2,2’-stilbenedisulfonic acid.

4. A method for manufacturing a cleaning formulation, said method comprising the steps of:
vii) providing rosin and castor oil in a container and heating till the mixture becomes oil like;
viii) adding caustic soda solution to step (i) and heating till it becomes soap like;
ix) continue heating till the sample does not leave an oily stain on a paper;
x) adding water to step (ii) to obtain a liquid soap;
xi) adding Nonyl Phenol Ethoxylates (10 moles), Castor oil Ethoxylates (20 moles), Linear alkyl benzene sulfonic acid –(LABSA) 90%, Sodium Lauryl Ether Sulfate (SLES) 28% and 4,4’-Diamino-2,2’-stilbenedisulfonic acid to step (iii) and continue heating;
xii) adding Light Creosote oil (LCO), Preventol KMX and water to the boiling mixture of step (v) to obtain the cleaning formulation.

5. The method as claimed in claim 4, wherein the heating temperature is in the range of 75-80oC.

6. The cleaning formulation of claim 1 as and when used on hard surfaces, including as tiles, ceramics, marble, granite, porcelain, stone, black stone, metals, glass, stainless steel, steel and the like, in house, hospital, theatre, aircrafts, public urinal, railway, bus stations and other public places.

7. The cleaning composition of claim 1 wherein the composition is having disinfectant and germicidal effect.

8. The cleaning composition as claimed in claim 7 wherein the composition is effective for 2 to 3 days.

9. The cleaning composition of claim 1 wherein the composition is having density of 1.2530 Kgm-3; coefficient of viscosity 3.0626×10-5 Nsm-2 and pH 7-8.

10. A soap solution comprising:
i) non-ionic surfactant of 10 moles in the range of 4 to 6 wt.%;
ii) non-ionic surfactant of 20 moles in the range of 4 to 6 wt.%;
iii) anionic surfactant of 90 % purity in the range of 4 to 6 wt.%;
iv) foaming agent in the range of 4 to 6 wt.%;
v) optical whitener in the range of 4 to 6 wt.%;
vi) rosin in the range of 4 to 6 wt.%;
vii) castor oil in the range of 30 to 32 wt.%;
viii) caustic soda flakes in the range of 4 to 5 wt.%;
ix) water up to 100 wt.%.