2473 results about "Sulphate sodium" patented technology

A system for delivering a chemical agent in the form of a spray or foam, which in a preferred embodiment involves the use of an aerosol dispenser to deliver a formulation containing both an anionic surface active agent such as sodium lauryl sulfate as a foaming agent and a chemical agent such as either hydrogen peroxide as a disinfecting chemical agent or natural sea water.

The invention discloses a lithium ion battery cathode material embedded nano metal loaded carbon nanosheet as well as a preparation method and an application thereof. By taking sugar (chitosan, cane sugar, fructose and glucose) as a carbon source, nitrate of transitional metals (Fe, Co and Ni) as a metal source and a catalyst and inert salts (sodium sulfate, sodium chloride, potassium chloride and cesium chloride) as a template and a dispersant, a two-dimensional carbon nanosheet which uniformly loads embedded nickel (or iron or cobalt) nanoparticles is prepared by a pyrolytic method in one step. The two-dimensional carbon nanosheet which uniformly loads embedded nickel (or iron or cobalt) nanoparticles prepared by the method is high in degree of graphitization, relatively high in specific surface area and high in conductivity, uniform in distribution and easy to separate, and the surface of the nanosheet is in a porous structure. The nanosheet as the lithium ion battery cathode material has relatively good circulating and rate performances.

The invention specifically relates to an anti-bacterial hand-washing solution and a preparation method thereof, belonging to the field of washing agents. The anti-bacterial hand-washing solution is mainly composed of fatty alcohol polyoxyethylene ether sodium sulfate, cocoamidopropyl betaine, alkyl glucoside, polyquaternary ammonium salt, fatty glyceride, humectant, mixed plant extract, tetrasodium ethylenediamine tetraacetate, sodium chloride, citric acid, jojoba oil, 1,2-pentanediol and essence. The preparation method comprises the following steps: dissolving fatty alcohol polyoxyethylene ether sodium sulfate, cocoamidopropyl betaine and fatty glyceride with water with a total amount of 70 to 80%; uniformly mixing jojoba oil, polyquaternary ammonium salt, humectant and alkyl glucoside; and mixing two mixed solutions obtained in the previous two steps, adding the rest components and carrying out uniform mixing under stirring. The anti-bacterial hand-washing solution provided by the invention has skin-care, skin-moistening, antibacterial, bacteriostatic, anti-allergy, soothing, anti-inflammatory and hand-microcirculation-improving effects and is a multifunctional hand-washing solution with strong sterilization and detergency capabilities and substantial skin-care and skin-moistening effects.

A pest-combating composition including sodium lauryl sulfate and one or more of C6-12 fatty acids, preferably lauric and / or capric and / or caprylic acid, soy methyl ester, and 2-undecanone, and methods of combating pests utilizing same, are disclosed. The compositions can include a carrier oil such as silicon oil, soy methyl ester, or a vegetable oil, and can be in the form of an emulsion. The composition may be constituted as a spray composition, an aerosol, a lotion, a paste, or another compositional form. Pests that may be usefully combated with such composition include flying insects, including flies, mosquitoes, and wasps, ants, including arthropods such as fire ants, ticks, fleas, cockroaches, silver fish, thrips, gnats, aphids, Japanese beetles, and agricultural and horticultural arthropods and insects including beetles (potato and bean), flea beetles, fleahoppers, squash bugs, slugs, leaf hoppers, harlequin bugs, milk weed bugs, spiders, mites, lice, rodents, and deer.

A process for preparing the quaternary ammonium salt of organo-silicon type bactericide includes such steps as adding anhydous sodium sulfate to absolute alcohol, stirring, dissolving dimethyl octadecalamine in it while stirring, slowly dripping gamma-chloropropyl triethoxysilane while stirring, adding catalyst, reaction to obtain the quarternary ammonium salt of organo-silicon, cooling, regulating pH=7, and adding absolute alcohol to regulate its concentration to 40%.

Provided herein are pharmaceutically acceptable sodium thiosulfate and pharmaceutical compositions thereof. Also provided herein are methods for determining the total non-purgable organic carbon in a sodium thiosulfate-containing sample. Further provided herein are methods for producing pharmaceutically acceptable sodium thiosulfate. Still further provided herein are methods of treatment comprising the administration of pharmaceutically acceptable sodium thiosulfate.

Provided is a pharmaceutical composition for permeabilizing fetal membranes including an active ingredient having a log K in the range of 2 to 4, where K is the octanol / water partition coefficient. The active ingredient may be, for example, bupivacaine, sodium lauryl sulfate or oleic acid. Further provided is a system for transfetal membrane transport. The system includes a probe unit adapted for insertion into a female reproductive tract and releasing a substance onto fetal membranes that permeabilizes the membranes. The system is also configured to apply ultrasound radiation to the fetal membranes to further increase the membrane permeability.

The invention discloses a method for preparing an asymmetric nanofiltration membrane by blending polyether sulfone and sulfonated polysulfone high polymers. A blending nanofiltration membrane with an asymmetric structure is prepared in one step by the nanofiltration membrane through a phase transformation method. The method comprises the following steps of: preparing casting membrane liquid, namely mixing the polyether sulfone, the sulfonated polysulfone high polymers, an additive and a solvent to prepare the casting membrane liquid; and forming a membrane by the phase transformation method, wherein the membrane comprises a flat membrane and a hollow fibrous membrane. The interception rate of the nanofiltration membrane to 0.5 to 1.5 g / L sodium chloride and 0.5 to 1.5 g / L sodium sulfate under the operating pressure of between 0.1 and 0.8 MPa is between 20 and 95 percent, the interception rate of the nanofiltration membrane to polyethylene glycol with the relative molecular mass of between 600 and 2,000 is between 40 and 99.9 percent, and the pure water flux of the membrane is between 10 and 250 L / (m2hbar). The asymmetric nanofiltration membrane of the invention has the advantages of high strength and toughness, high compactness resistance, chlorine resistance and high-temperature resistance, and can be applied to aspects of water treatment, wastewater treatment, material separation and the like.

Cosmetic and / or dermatological cleaning emulsion (A) comprises sodium laureth sulfate (I) and / or sodium myreth sulfate (II) at total concentration 2-17wt.%; at least one polyacrylate (III) at 0.2-0.74wt.% and an oil phase (B) at 43-51wt.%, optionally also other active agents, auxiliaries and additives, and has viscosity 500-3500 mPa.s at shear rate 100 reciprocal s. Cosmetic and / or dermatological cleaning emulsion (A) comprises sodium laureth sulfate (I) and / or sodium myreth sulfate (II) at total concentration 2-17wt.%; at least one polyacrylate (III) at 0.2-0.74wt.% and an oil phase (B) at 43-51wt.%, optionally also other active agents, auxiliaries and additives, and has viscosity 500-3500 mPa.s at shear rate 100 reciprocal s. (III) is an anionic homo- and / or co-polymer of acrylic acid and / or alkylacrylic acids or their esters; (B) contains 25-50wt.% paraffin oil (B1) and 1-25wt.% at least one oil (B2) of polarity 5-50 mN / m, on total weight of the composition.

The invention provides a polyamide / COFs hybridized nanofiltration composite membrane. The composite membrane comprises a composite layer and a loaded porous frame material. The composite layer is a layer of polyamide compound formed by conducting polymerization reaction on piperazine and trimesoyl chloride, and the thickness is 100-500 nm. The porous frame material is SNW-1 obtained when melamine and terephthalaldehyde react, and is a compound layer with the loading amount of 0.5-3 g / m<2>. A covalent organic framework is effectively hybridized in a separation layer of the composite membrane, and more water channels are provided for the nanofiltration membrane. By means of the method, various types of COFs can be introduced onto a polyether sulfone base membrane, the water flux can reach 200 L / m<2>.h.MPa and increased by 2 times, the sodium sulfate retention rate of the nanofiltration membrane is still kept at 80% or above, and the high water flux and the high retention rate are achieved.

The nickel hydroxide particles for a nickel hydroxide electrode may be treated using an alkaline solution of a strong oxidizing agent such as sodium or potassium persulfate to modify the surface nickel hydroxide structure. The resulting modified surface structure has been found to impart various benefits to electrodes formed from the nickel hydroxide. It is believed that the oxidation of cobalt compounds at the surface of the nickel hydroxide particles results in a highly conductive cobalt compound that plays an important role in the high reliability, high stability and high capacity utilization of nickel electrodes as described herein.

The invention discloses PE (polyurethane) protective film glue and a preparation method thereof. The PE protective film glue consists of the following components in parts by weight: monomers: 20-60 parts of butyl acrylate, 25-45 parts of methyl methacrylate, 12-32 parts of methyl acrylate, 5-15 parts of acrylic acid, 10-24 parts of hydroxyethyl acrylate, 120-140 parts of enthyl hexyl acrylate; emulsifying agents: 0.5-1.5 parts of polyoxyethylene octyl phenyl ether, 0.5-1.5 parts of sodium dodecyl sulphate, 0.5-1.5 parts of sodium dodecyl benzene sulfonate; a solvent: 280-350 parts of deionized water; and an initiating agent: 0.6-1.5 parts of ammonium persulfate. The PE protective film glue provided by the invention is the water-based adhesive and has the advantages of environment friendliness, no pollution, strong adhesive force and adhesive strength, and short drying time. A PE protective film coated with the PE protective film glue provided by the invention can be used for a vehicleprotective film, the protective films of all home appliances and so on. The effects of non-degumming and no residue glue can be realized.

The invention relates to a method for extracting and separating a lithium isotope aqueous solution and belongs to the technical field of solvent extraction. In the method, hydrophobic naphthisoazine and hydrophilic ionic liquid respectively serve as an extracting agent and a synergist; and naphthisoazine, the ionic liquid and lithium ions form a stable ion associated matter under an alkaline condition, lithium ions enter into an organic phase through aqueous phase extraction and an obvious isotope separation effect is generated. The method comprises the following steps of: regulating the alkalinity of a lithium hydroxide solution, respectively adding the extracting agent, the synergist and the hydrophilic ionic liquid serving as an extracting medium, oscillating at normal pressure and normal temperature, standing still for layering, collecting the organic phase, and adding sodium sulfate into the organic phase to carry out lithium salt back extraction so that the lithium ions come back to the aqueous phase, thereby realizing the selective extraction and high-efficiency enrichment of lithium isotopes.

The invention relates to a method for preparing modified polyamine porous starch obtained through the following steps: preparing starch as the raw material and compound enzymes into porous starch; cross-linking the porous starch; modifying the porous starch through etherification; and grafting different polyamine molecules. The modified polyamine porous starch is capable of absorbing AG25 and AR18 in wastewater by the hollow structure and grafted functional groups thereof, particularly, the removal rate of both AG25 and AR18 in the wastewater is higher than 98% according to the tests; the modified polyamine porous starch can be taken out and dipped in a sodium sulfate solution with the molar concentration thereof being 0.05mol / L to 1mol / L for desorption when the absorption effect is reduced, particularly, the desorption rate of AG25 and AR18 is higher than 90%; and the absorption effect of the modified polyamine porous starch is not reduced after being subjected to desorption and analysis for multiple times. Compared with the common porous starch, the product of the invention increases the absorption capacity by more than two times and ensures the high selectivity. Therefore, the method of the invention is of significant economic and social benefits and is applicable to the absorption treatment of heavy-metal ions and wastewater containing various dyes in the industries, such as printing and dyeing, textile and cosmetics.

The invention discloses a method for purifying silk fibroin. According to the method, glycerin monostearate sulphate sodium salt, fatty alcohol-polyoxyethylene ether, and sodium diethylhexyl sulfosuccinate are taken as the penetrant. High molecular weight silk fibroin can be obtained through steps of steeping raw silks of silkworm or silkworm cocoon in the penetrant, degumming through weak base and enzyme so as to remove silk glue, then dissolving and dialyzing. The silk fibroin purified by the method does not contain silk glue, less molecular weight of silk fibroin is degraded, the chain H, chain L and P25 of the original silk fibroin can be reserved, the molecular weight of the original silk fibroin is reserved, and the materials such as silk fibroin membranes, fibroin gel, fibroin microsphere, and fibroin porous membranes prepared by the raw material silk fibroin are improved in properties.

Disclosed is an emulsified asphalt profile control agent. The emulsified asphalt profile control agent is applied to adjustment of injection profiles of water injection wells in the water injection development process of oil fields. The water drive wave and efficiency are improved. The emulsified asphalt profile control agent comprises, by weight, 45-65% of asphalt, 0.3-1.2% of dodecyl diphenyl ether sodium disulfonate, 0.3-1.2% of sodium alcohol ether sulphate, 0.05-0.1% of polyoxyethylene fatty acid, 0.02-0.8% of phenethyl phenyl polyoxypropylated polyoxyethylene ether, 0.3-1.5% of sodium pyrophosphate, 0.02-0.1% of ultra-fine calcium powder, 0.02-0.08% of carboxymethyl cellulose, 0.02-0.08% of anionic polyacrylamide, 0.000004-0.04% of sodium hydroxide and the balance fresh water of which the salinity is less than 1,000mg / L. The emulsified asphalt profile control agent has the advantages that the emulsified asphalt profile control agent can enter deep portions of oil reservoirs effectively, the water plugging rate is more than 90% under the condition that the injection capacity accounts for 1-15% of the reservoir preprocessing radius hole volume, the validity period of the water plugging is more than 2 years and oil flow channels are not damaged.

The invention provides a fabric detergent with colour-preserving function and preparation method thereof. The detergent contains sodium fatty alcohol ether sulphate, laurylamide propyl betaine, alkyl glucoside, fatty alcohol polyoxyethylene (9) ether, sodium alpha-olefin sulphonate, 3-methooxyl-3-methyl-1-butyl alcohol, 1-vinyl pyrrolidone, 1-vinyl copolymer, sodium chloride, 1, 2-benzisothiazolin-3-one, essence, citric acid monohydrate and deionized water. The invention obtain favourable detergency in clothing washing process while realizing colour-preserving effect; the detergent is environmentally friendly, cleaning and colour-preserving are completed in one step, the detergent is non-toxic and non-irritant, and resource is saved.

The invention provides a method for preparing a Salen-metal complex. The method comprises the following steps of: under the argon atmosphere, adding ligands(II), sodium methoxide, absolute methanol soluble ligands(II) and sodium methoxide into a reactor in sequence; stirring the mixture for 2 minutes, and adding 1mol / L cobalt acetate anhydrous / methanol solution dropwise, wherein the molar ratio of the ligands(II) to sodium methoxide to cobalt acetate is 1:1:1; and making the mixture reacted at the room temperature for 24 hours, adding anionic salt which has the same molar weight as the cobalt acetate, stirring the mixture for three days in the air, stopping the reaction, concentrating the mixture, performing dissolution and filtration by adding methylene chloride, drying the filtrate by anhydrous sodium sulfate overnight, filtering the mixture, concentrating under reduced pressure, and drying the mixture under the vacuum condition to obtain the Salen-metal complex. The Salen-metal complex prepared by the method has the advantages of simple method, low cost and high catalytic efficiency.

The invention relates to a super-concentration fabric cleaning agent which is composed of, by weight, 25-99 parts of surface active agents, 0-21 parts of addition agents and 1-75 parts of water. The surface active agent is at least one of ethoxylated lauryl alcohol sulfates (AES), fat polyoxyethylene ether (AEO), fat alcohol sodium sulfate (K12), fatty acid methyl ester ethoxylate (MEE), lauramidopropyl betaine (CAB), fatty alcohol diethanolamide (6501), linear alkylbenzene sulphonic acid (LAS) and alky glycoside (APG). The super-concentration fabric cleaning agent is free of organic solvents, no solubilization is needed, and the active matter content can reach 99%. Through the characteristic that the surface active agent fatty acid methyl ester ethoxylate (MEE) is free of cloud points, the complex formulation is conducted on the fatty acid methyl ester ethoxylate (MEE) and other surface active agents, and the functions of solubilization, complex formulation and surface activation are achieved.

The invention discloses a method for catalyzing dynamic kinetic resolution of arylamine via a racemization catalyst, comprising the following steps of: 1) adding p-chlorophenol, n-pentanoic acid, dicyclohexylcarbodiimide and 4-dimethylamino-pyridine, and carrying out mixing, filtration, drying, concentration and column chromatography to obtain a pentanoic acid p-chlorophenyl ester acyl donor; 2) carrying out coprecipitation on magnesium chloride solution and aluminum chloride solution and carrying out water-heat treatment to obtain chloridion intercalated hydrotalcite, adding the chloridion intercalated hydrotalcite in lauryl sodium sulfate aqueous solution, and carrying out backflow, cooling, centrifugation, water washing, acetone washing and drying to obtain a carrier; 3) adding palladium salt and the carrier, and carrying out heating, ascorbic acid addition, centrifugation, water washing, acetone washing and freeze-drying to obtain the racemization catalyst; and 4) adding arylamine, the acyl donor, lipase and the racemization catalyst in toluene and placing in a stainless steel reactor to add hydrogen so as to obtain amide. The method provided by the invention is used for catalyzing the dynamic kinetic resolution of arylamine, has rapid reaction rate, low temperature, high conversion rate and high product optical purity, and has great application value.

The invention relates to an environment-friendly water-based extinguishing agent, which relates to an extinguishing agent. The compositions with weight percentage are as follows: a reagent: 4 to 6 percent of butanol, an extinguishing agent intensifier: 3 to 12 percent of perfluorooctane surfapropyl betaine, a flame retardant: 2 to 8 percent of poly ammonium phosphate, a vesicant: 0.8 to 2.6 percent of dodecyl sulphate sodium salt, a thickener: 0.2 to 0.9 percent of xanthan, an antifreeze: 8 to 18 percent of glycol, a neutralizer: 0.5 to 1.4 percent of triethanolamine, a stabilizing agent: 0.015 to 0.04 percent of sodium hydroxide, an asphyxia ingredient: 0.2 to 1.4 percent of benzotriazole, and a dissolution ingredient: 50-75 percent of pure water. The environment-friendly water-based extinguishing agent meets the needs of normal storage and use under the climate condition of high temperature of 63 DEG C and low temperature of minus 42 DEG C, and has a plurality of functions such as environmental protection, high efficiency and cold resistance.

The invention relates to a preparation method for 4-methyl-5-ethyoxyl-oxazole. The preparation method for the 4-methyl-5-ethyoxyl-oxazole comprises the following steps of: performing cyclization reaction on N-ethoxyl oxalyl alanine ethyl ester under the action of phosphorus oxychloride / triethylamine / dimethylformamide used as a cyclization dehydrating agent at the temperature of between 40 and 60 DEG C for 0.5 to 1 hour; heating to 75 to 100 DEG C and reacting for 5 to 10 hours; hydrolyzing the reaction materials and separating out a water layer; adding an aqueous solution of sodium hydroxide into an organic layer to hydrolyze, adjusting the pH value to be 12 to 14, distilling to obtain ethanol and adjusting the pH value to be 2.0 to 3.0 by adding sulfuric acid; heating to 65 DEG C to perform decarboxylation; adjusting the pH value to 8.0 to 10.0 by using alkali; after chloroform extraction, drying the organic layer by using anhydrous sodium sulfate; and distilling the chloroform under normal pressure to obtain the target product 4-methyl-5-ethyoxyl-oxazole. The process is easy to operate and by the preparation method, industrialized production is easy to realize; the reaction condition is mild, side reaction is few, reaction yield is high and the product content is high; and toxic methylbenzene is not used, so physical health of staff and environmental protection are facilitated.

The present invention is directed to a method for treating the foot of an animal, including treatment of infectious diseases of the foot of an animal. Among the various aspects of the invention is provided a method of contacting a foot of an animal with an antimicrobial composition comprising water, sulfuric acid, ammonium sulfate or sodium sulfate, and, optionally, an antimicrobial metal. Also provided is a method of rotational treatment wherein a foot of an animal is contacted with a series of antimicrobial composition with and without an antimicrobial metal component.

The invention discloses a flotation separation method for chalcopyrite, galena, zinc blende and ironpyrite by a composite inhibitor which comprises sodium pyrosulfite, sodium sulfite and ferrous sulfate, has an inhibition effect on the galena, the zinc blende and the ironpyrite under the condition of a natural pH value, and is easy to degrade and activate after inhibition during a separation process of the chalcopyrite, the galena, the zinc blende and the ironpyrite. According to the flotation separation method, the flotation is performed under the condition of a neutral medium, the adopted composite inhibitor has the inhibition effect on three metal sulphide ores of the galena, the zinc blende and the ironpyrite; environment pollution caused by adoption of heavy metal salt inhibitors is prevented; pipeline scaling caused by adoption of lime is prevented; and the inhibiting capacity of the composite medicament is relatively weaker and added segmentally, an activation difficulty of follow-up operation due to overinhibition in a flotation process is prevented, and the improvement of the metal recovery rate is further facilitated.

The invention discloses an anti-flaming antisepsis leather coating which is composed of, by weight, 2-3 parts of hydrous zinc borate, 1-1.5 parts of linoleic acid calcium soap, 0.1-0.2 part of triterpenoid saponin, 0.7-1 part of calcium naphthenate, 1.7-2 parts of polyvinylpyrrolidone, 0.8-1 part of polyacrylamide, 1.6-2 parts of stannous chloride, 0.1-0.13 part of triethanolamine, 190-200 parts of methyl methacrylate, 3-4 parts of lauryl sodium sulfate, 0.1-0.2 part of urotropine, 0.2-0.3 part of ammonium persulfate, 6-7 parts of a 20%-25% formaldehyde solution, 16-20 parts of zinc acetate, 4-7 parts of silver nitrate, 1-2 part of decabromodiphenyl ether and 0.4-1 part of sodium lauryl sulfate. The anti-flaming antisepsis leather coating has a good antibacterial property and excellent moisture permeability and water resistance. Leather coated with the obtained emulsion is good in antibacterial property and excellent in hygiene property.

At least one of the following compounds is applied as a re-wet solution to media: potassium iodide, sodium iodide, sodium thiosulfate, potassium thiosulfate, and sodium thiocyanate. The addition of at least one of these compounds to the re-wet solution can improve light fastness on the order of eight to thirteen times or more on porous glossy media. These additives are particularly effective with water-soluble dyes, including dyes such as Reactive Black 31 (Pacified) (RB31), Direct Blue 199 (DB199), Magenta 377 (M377), and Direct Yellow 132 (DY132).

The invention relates to an effective environment protective acid fixing agent that is prepared by a polypropylene acid fixing agent, an addition agent and a solvent which are matched. The polypropylene acid fixing agent is prepared by the following steps: mixing isopropanol, methacrylic acid, 2-acrylamido-2-methylpropane sulfoacid, acrylic acid and sodium persulfate in deionized water to be reacted for 1 to 5 hours at 80 to 90 DEG C and acquiring a reaction product, namely, the polypropylene acid fixing agent by post treatment. The preparation method of the effective environment protective acid fixing agent includes: adding proper water, adding all the materials under the condition of stirring at 40 to 50 DEG C in sequence to be mixed for 2 to 3 hours, uniformly dissolving, filtering, discharging and controlling the pH to be 6 to 7. The materials of the invention are environment-protective, can reduce the treatment cost of waste water and can generate remarkable social and economic benefits.

The invention provides essential oil condensation beads for washing clothes. The essential oil condensation beads comprise, by weight, 20-25% of sodium C14-16 olefin sulfonate, 15-20% of fatty alcohol polyoxyethylene ether (9EO), 10-12% of sodium alcohol ether sulphate, 8-10% of lauryl alcohol sulphate triethanolamine, 2-4% of polyethylene glycol, 1-3% of cationic alkyl polysaccharide, 1-2% of D-panthenol, 0.3-0.7% of phenoxyethanol, 0.05-0.01% of disodium ethylenediamine tetraacetate, 0.5-1% of jasminum essential oil, 0.05-0.1% of triclosan, 0.1-0.2% of protease, 0.002-0.005% of red-33 pigment and the balance deionized water. The invention further provides a preparing method for the essential oil condensation beads. The essential oil condensation beads have the multiple effects of washing, caring, sterilizing, deodorizing and physical and mental delighting, and are convenient to use.

The invention discloses a foaming agent for a shield. The foaming agent contains the components in percentage by weight: 1.0-10.0% of alpha-olefin sulfonate (AOS), 1.0-8.0% of sodium fatty alcohol -polyoxyethyleneether sulfate (AES), 1.0-6.0% of ammonium lauryl sulfate (K12 ammonium), 1.0-6.0% of cocoanut fatty acid diethanolamide (6501), 1.0-5.0% of dodecyl dimethyl betaine (BS-12), 0.005-0.1% of fluorocarbon surfactant (FS), 0.2-5.0% of sodium nitrilo triacetate (A92R), 0.2-5.0% of ethylene diamine tetraacetic acid disodium salt (EDTA) and the balance of water. The foaming agent for the shield provided by the invention realizes high multiple foaming rate, long foam stabilizing time, nontoxicity and innocuity and is an environment friendly biodegradable product which does not contain phosphorus.