378 results about "Carcainium Chloride" patented technology

The present invention is organ and tissue preservation solutions that provide improved viability of an organ such as a heart or lung, or portion of the organ, for storage and transplantation. In particular, a solution contains trehalose, magnesium sulfate, calcium chloride, heparin, dextran, nitroglycerin, adenosine, L-arginine, allopurinol, reduced glutathione, db-cylic AMP and potassium phosphate.

A new process for recovery of common salt, potassium chloride, concentrated magnesium chloride with enriched bromide, and high purity magnesia from brine in an integrated manner, said process comprises preparation of calcium chloride by reaction of hydrochloric acid generated in the process with limestone, desulfatation of brine with calcium chloride, production of sodium chloride of superior quality in solar pans, solar evaporation of bittern thereby producing carnallite and end bittern, processing carnallite through established processes to produce potassium chloride, recovering end bittern containing highly concentrated magnesium chloride and enriched bromide and calcination of a part of the end bittern after solidification to produce high purity magnesia and hydrochloric acid utilizable in the process.

Based on the use of a coolant aqueous liquid, usually brine, maintained at low temperature in a reservoir receptacle, as low as −20° C. if the brine is of Sodium chloride or as low as −50° C. if it is of Calcium chloride, applied on the upper surface of the container, positioned horizontally, rotating about its axis, by means of soft jets, during a time which is calculated from the initial and desired temperatures, the temperatures of the cold solution and of the rinsing water and from the temporal coefficient of the packaged beverage, so that the brine glides over its surface drawn by the force of gravity, surrounding it completely through surface tension adherence to the surface of the container located underneath, where it is detached, determining at all times that the brine coats the greater part of the container during the spraying. By substituting the coolant liquid with hot water the rapid heating of packaged beverages is produced.

A preparation method for the p-phenylene terephthalamide p-phenylenediamine with high molecular weight, which comprises the following steps: adding anhydrous calcium chloride and N-methylpyrrolidone (NMP) to a reactor according to the weight proportion of 4-20: 100; adding proper amount of p-phenylenediamine (PPD), starting stirring, stirring for 30min at room temperature; inletting cooling medium to the reactor jacket to reduce temperature; reducing the system temperature to 0-15 DEG C below zero; adding the first batch of terephthaloyl chloride (TPC), continually stirring for 30min; reducing the temperature to 0-15 DEG C below zero again; adding the second batch of TPC; stirring quickly; stopping reaction after the system occurs pole-climbing and gel and is stirred to prepare the p-phenylene terephthalamide p-phenylenediamine. By adding the reactant TPC by two batches, the method of the invention can effectively control the reaction temperature; by cooling and reducing the temperature of the system, the method reduces the occurrence of side reaction and prepares the p-phenylene terephthalamide p-phenylenediamine with higher molecular weight and better color and luster.

The present invention provide a beta-1,3 / 1,6-glucan, a preparation method therefor, and application thereof in preparing immune enhancement and anti-tumor medicine and functional food. The preparation method comprises: drying and milling antarctic brown algae; after degreasing, water extracting, calcium chloride precipitating and anion exchanging resin purification, obtaining glucan with a beta-1,3-glucose main chain and a beta-1,6-glucose branched chain, wherein a molecular weight thereof is between 5-50 kDa. The beta-glucan prepared by the present invention has an immune enhancement activity, which is indicated by swallow of neutral red by in vitro macrophages and an NO release promoting experiment, and has a tumor growth inhibiting effect and a tumor metastasis inhibiting effect which are indicated by an in vivo animal experiment. According to the present invention, beta-1,3 / 1,6-glucan is prepared by using the antarctic brown algae; is characterized in richness and readily availability of raw material sources, simple preparation process, high product purity, strong bioactivity and easiness for industrialization; and has a prospect of being developed into immune enhancement and anti-tumor medicine.

The invention relates to an amorphophallus glucomannan drying agent which consists of amorphophallus glucomannan, propenoic acid, sodium hydroxide, ethanol, hydrochloric acid, potassium persulfate, N,N-methylene-bisacrylamide, calcium chloride and water. The preparation method of the drying agent comprises the steps of: preparing deacetylation amorphophallus glucomannan and deacetylation amorphophallus glucomannan-propenoic acid copolymer; mixing the deacetylation amorphophallus glucomannan and the deacetylation amorphophallus glucomannan-propenoic acid copolymer according to a proportion; andcrushing and pelleting after expansion. The drying agent has the advantages of reasonable formula, low cost, strong water absorption, safety, no toxicity, no harm to skin and eyes, biodegradability and the like, and can be widely applied to the fields such as food, medicine, chemical industry and the like.

Embodiments relate to methods and formulations of buffers used for isolating, purifying, and recovering long-chain and short-chain nucleic acids. The areas of application of the inventive method include all laboratories engaged in isolating nucleic acids. In one embodiment a solution containing a nucleic acid is prepared with additives containing monovalent and multivalent cations and, optionally, an alcohol and / or additional additives. The solution is contacted with a solid phase, the solid phase is optionally washed, and the nucleic acid is removed. The solution may contain multivalent and / or monovalent cations and may contain an alcohol. The solution in certain embodiments has a pH between 7 and 10. Ammonium chloride, sodium chloride and / or potassium chloride may be used as monovalent salt components. Magnesium chloride, calcium chloride, zinc chloride and / or manganese chloride may be used as multivalent salt components. In a preferred embodiment, identical molar amounts of sodium chloride and manganese chloride are used.

A synthetic method for aliphatic alpha-calcium picrolonate comprises the following steps: 1. adding carbonyl group reactant in glycolylurea in the presence of catalytic accessory and water and heating, wherein the mol ration of the glycolylurea and the carbonyl group reactant is 1:1.2-1.4; the carbonyl group reactant is aldehyde compound or ketone compound; when aldehyde compound is adopted the catalytic accessory is potassium bicarbonate, and when ketone compound is adopted the catalytic accessory is ethanolamine; 2. cooling to the room temperature, regulating the pH valve to 7 and separating out the intermediate product; 3. filtering and washing the intermediate product; 4. stirring and refluxing the intermediate product and sodium hydroxide solution, wherein the mol ratio of the intermediate product and sodium hydroxide is 1:3-5; 5. regulating the pH value to 4-5, antiregulating the pH value to 7 with the sodium hydroxide solution, and evaporating to remove the moisture; 6. adding absolute methyl alcohol to extract for several times and filtering; 7. distilling to remove the methyl alcohol; and 8. adding de-ionized water and aqueous calcium chloride solution of equivalent amount and separating out alpha-calcium picrolonate. As massive subsidiary products are removed in the method, the calcium content in the prepared product can achieve the standard.

The present invention discloses a composite film or fibre material formed from cellulose and tourmaline nano crystal grains, its preparation method and application. Said method uses NaOH / thiourea aqueous solution as solvent to dissolve cellulose, then the dissolved cellulose and the tourmaline nano crystal grain suspension are mixed together according to different mixing ratio, and blade-applied or spray-webbed, and solidified in calcium chloride aqueous solution, and regenerated in hydrochloric acid or sulfuric acid sequence solution so as to obtain the series cellulose composite material. Said invented products have good mechanical property and bacteria-resisting activity, so that have extensive application range.

The invention relates to a multifunctional high temperature resistant composite preparation for tomato, and a preparation method thereof. The formula of the composite preparation comprises, by mass, 0.1-1% of mycose, 0.3-2% of carboxymethyl chitosan, 0.3-1.5% of salicylic acid, 0.1-0.5% of calcium chloride, 0.1-0.3% of boric acid, 0.1-0.3% of potassium dihydrogen phosphate and 94.4-99% of water. The composite preparation contains no plant growth regulator components, can substantially improve the content of chlorophyll in tomato plant blades in high temperature adversity situations, improves the photosynthesis rate, increases the output, improves the product quality, and effectively improves the high temperature resistance of tomato. The composite preparation has a substantial control effect on fruit blossom-end rot and other physiologic diseases of tomato at a high temperature.

The invention relates to a nano-micro drug delivery system and a preparation method of a slightly soluble drug of 10-hydroxyl camptothecin (HCPT). The invention makes use of alginate to dissolve HCPT under alkalic condition; then acidic calcium chloride miniemulsion is added to the prepared uniform HCPT-containing emulsion to have crosslinking and curing reactions; at the time when the emulation droplets cure, the HCPT constellation is partially transformed, so that the HCPT crystallize; and then, an acidic chitosan solution or an acidic chitosan derivative is used for secondly curing so as to let the HCPT to crystallize further more. The product prepared through the method is a composite alginate chitosan microsphere or a micro-capsule drug delivery system loaded with HCPT with uniform size and stable dispersion. The nano microspheres of the system have uniform grain size and stable dispersion and the drugs in the nano microspheres exist in the form of closed-loop medicinal nanocrystalline. The invention can realize the increase of solubility of indissolvable drugs and the improvement of bioavailability and effectively improves the encapsulation rate of the indissolvable drugs.

The invention discloses a preparation method and applications of carboxylation chitosan. The preparation method comprises following steps: a dimethylsulfoxide solution of glutaric anhydride is delivered into a sealed reactor, and is heated, chitosan is added for reaction, an obtained product is reacted in sodium hydroxide solution so as to obtain carboxylation chitosan; carboxylation chitosan is dissolved in a solid acid solution, calcium chloride is added for dissolving, an obtained mixture is subjected to spray drying so as to obtain carboxylation chitosan hemostatic particles; carboxylation chitosan is dissolved in the solid acid solution, calcium chloride is added for dissolving, the obtained mixture is subjected to freeze drying so as to obtain carboxylation chitosan hemostatic sponge; carboxylation chitosan is dissolved in an acid solution, an obtained mixed solution is injected into a mould, the mould is sealedly coated with a one-way permeable membrane, and is immersed in an alkaline medium so as to obtain chitosan gel, the obtained chitosan gel is washed with deionized water until pH value reaches 7, and is immersed in a calcium chloride solution for crosslinking, an obtained product is collected, washed, immersed in a glycerine solution, collected, and drained, is added into absolute ethyl alcohol for single-surface steaming, and is dried so as to obtain carboxylation chitosan hemostatic membranes.

The invention provides a material for desensitizing teeth by sealing dentinal tubules. The material comprises the following raw materials in parts by weight: 30-60 parts of carboxymethyl chitosan, 5-10 parts of dipotassium phosphate, 10-20 parts of calcium chloride, 24-48 parts of lysozyme and 12-24 parts of water. Through an electrostatic acting force between the carboxymethyl chitosan and the lysozyme, a carboxymethyl chitosan and lysozyme containing nanogel is formed, the nanogel stabilizes calcium ions and hydrogen phosphate ions in a calcium phosphate solution, and the formed desensitizing material is in the form of rigid solid spheres containing nanometer amorphous calcium phosphate particles. Experiments prove that the desensitizing material is simple and convenient in preparation method and can penetrate into the dentinal tubules to achieve rapid desensitization and mineral crystals are formed and are firmly combined with the surfaces of the teeth; the newly formed crystals cancover the dentinal surfaces; the desensitizing material is good in biocompatibility, low in allergenicity, non-toxic, non-irritant, wide in clinical application range and ideal in using effect.

The invention discloses a selective culture medium used for the quantitative detection of bacillus. Each litre of the selective culture medium comprises the following components: 1-10g of glucose, 1-5g of yeast extract, 5-10g of tryptone, 0.2-2g of calcium chloride, 0.1-1g of magnesium sulfate, 15-20g of agar and 100-500IU of bacteriostatic agent. Through variable temperature cultivation, the selective culture medium adopts can be used to increase the selectivity of the conventional plate counting method to bacillus, eliminate the influences of other microorganisms or impurities in s sample to be detected and achieve the aim of detecting bacillus fast and quantitatively.

The invention belongs to the technical field of water treatment, and particularly relates to sustained-release nano-calcium peroxide materials, preparation thereof, and a method for removing chlorohydrocarbon and benzene series from underground water by strengthening and activating the sustained-release nano-calcium peroxide materials through ferrous sulfide. By taking calcium chloride, hydrogen peroxide with the mass fraction being 30% and ammonium hydroxide with the mass fraction being 30% as raw materials and by adding different dispersing agents, an irreversible coagulation phenomenon is avoided in the synthesis process, then by adding different macromolecular polymers such as polyethylene glycol 400 (PEG400), polyvinyl alcohol (PVA) and diethylene glycol monoethyl ether (DEGMME), a film is formed on the surface of nCaO2, and through processes such as washing with water and ethyl alcohol and vacuum drying, the sustained-release nano-calcium peroxide advanced oxidation materials embedded with the various macromolecular polymers are obtained. By applying the oxidation materials, the purposes of efficient and lasting treatment of pollutants and lowering of the repair cost of the underground water in contaminated sites are achieved.

The invention discloses immobilized cyclodextrin glucoside transferase and a preparation method and application thereof. The preparation method comprises the following steps of: firstly, adding a molecular sieve into enzyme liquor; secondly, adding glutaraldehyde to crosslink mixed liquor; and finally embedding with sodium alginate and calcium chloride to obtain the immobilized cyclodextrin glucoside transferase. The immobilized cyclodextrin glucoside transferase prepared by the method has higher thermal stability and storage stability, can be immobilized by crude enzyme liquor and greatly reduces immobilization cost. The immobilized enzyme can be used for producing 2-O-glucosyl ascorbic acid, the conversion rate is up to 0.22 g*L<-1>*h<-1>, products after conversion are easy to extract, and the immobilized enzyme is also easy to recycle and can be reused.

The invention relates to self-flowing para-phenylene terephthalamide and a preparation method thereof. The preparation method comprises the following steps of: 1) dissolving p-phenylenediamine with a sulfonic acid group and lithium chloride or calcium chloride serving as an additive in a solvent to prepare a solution, keeping the temperature of the solution between 80 and 100 DEG C, adding a paraphthaloyl chloride solution into a constant pressure funnel, reducing reaction temperature for 1 to 8 minutes, and adding paraphthaloyl chloride into the solvent containing the p-phenylenediamine for reacting with quick stirring in the presence of inert gases; and 2), adding alkali into the solution for reacting, adding a quaternary ammonium salt solution for reacting, and performing synthetic reaction for 5 to 7 hours to obtain the self-flowing para-phenylene terephthalamide, wherein molecular weight is 2,000 to 40,000, the temperature of thermal decomposition is 400 to 600 DEG C, and the self-flowing para-phenylene terephthalamide can be dissolved in water and most organic solvents. According to aramid fibers prepared from the self-flowing para-phenylene terephthalamide, the break elongation is 2 to 4 percent, the compression strength is 0.02 to 1.29 GPa, the tensile strength is 1,000 to 6,000 MPa, and the modulus of elasticity is 1 to 1.6 Mpa. The method is mild in polymerization reaction and high in controllability; and a structure of quaternary ammonium salt is changed, and the dissolution performance of a polymer can be regulated.

The present invention relates to a cooling agent, and medicated ice-bag with said cooling agent and its application method. The cooling agent of said medicated ice-bag is a compound liquor whose composition contains (by volume ratio) 20% of absolute ethyl alcohol, 10% of glycerol, 20% of calcium chloride, 10% of sodium chloride, 1% of berberine and 39% of water. It does not ice at 55 deg.C below zero, and it is made into a flocculent material, its thermal eapacity is 2 calorie / g / deg.C, and it can absorb lots of heat quantity.

The invention belongs to the technical field of microcapsules and discloses degradable, environment-friendly and antifouling microcapsules as well as a preparation method and an application thereof. The method comprises steps as follows: 1) a solution is prepared from chitosan by use of acid, and a chitosan solution is obtained; the chitosan solution and capsaicin compounds are mixed uniformly, and a suspension is obtained; 2) the suspension is dropwise added to a calcium chloride solution in a liquid drop form, curing is performed, and the degradable, environment-friendly and antifouling microcapsules are obtained. The method is simple and low in cost, the prepared microcapsules are degradable, the stability of capsaicin is improved, too large irritation of the capsaicin to a human body during use is avoided, and the environmental protection problem is solved; meanwhile, the microcapsules have excellent encapsulating performance, lasting and stable slow release effect and a better antifouling effect. The microcapsules are applied in the fields of food, medicines and coatings.

The invention discloses a microorganism repairing agent for repairing rock cracks and a preparation method of the microorganism repairing agent. The microorganism repairing agent is prepared from thefollowing raw materials of: bacillus pasteurii and a cementing material, the cementing material is prepared from the following raw materials in parts by weight: 17-35 parts of urea, 32-64 parts of calcium chloride, 10-20 parts of nutrient broth, 1.5-2.5 parts of NaHCO3 and 9-12 parts of NH4Cl; the OD600 value of the bacillus pasteurii in the repairing agent is 0.6-1.2. The microbial remediation agent provided by the invention has the advantages of small size, low viscosity, high permeability, environmental friendliness and the like, and can quickly enter narrow rock cracks to fill and seal thecracks so as to solve the problem of rock crack leakage; the product of microbial mineralization is mainly calcite type calcium carbonate; the product has good stability and durability and is good incompatibility with a matrix material; the method that microorganisms are adopted to induce calcium carbonate precipitation is an eco-friendly technology and has the advantage of being green and environmentally friendly.

The invention discloses a fabric softening conditioner, which comprises the following components: 6-10 parts of dioctadecyl dimethyl ammoninm chloride, 5-9 parts of polyoxyethylene alkyl ether, 8-15 parts of methylol cellulose, 1-4 parts of sodium tripolyphosphate, 1-3 parts of diethanolamine stearate, 4-6 parts of emulsifier, 0.1-0.3 parts of calcium chloride and 40-60 parts of water. The invention has the advantages that the decontamination and antistatic treatment can be simultaneously performed while washing, so that the labor amount and the water resources can be saved, the washing time can be reduced, and the clothes after washing are soft and smells good.

The invention relates to a medicine for curing chronic renal failure and a production method thereof, which is characterized in that the medicine is calcium-base samoite excluding K+, Na+, Mg2+ and other exchangeable cations. The preparation method includes immersing the samoite in calcium chloride solution and then exchanging ions. After oral administration, toxins in the alimentary tract of patients with chronic renal failure is absorbed by samoite of the medicine and then discharged out of the body along with intestinal peristalsis, thus achieving intestinal hemodialysis. While absorbing and fixing the toxins in the alimentary tract, the calcium-base samoite has no side effect on patients of Na and K restriction without releasing K+, Na+, Mg2+ and other exchangeable cations.

The invention discloses phenyl vinyl MQ resin and a preparation method thereof. The phenyl vinyl MQ resin is prepared by sequentially adding, by weight, 40-50 parts of tetraethoxysilane, 12-17 parts of hexamethyldisiloxane, 33-66 parts of diphenyldimethoxysilane, 2.3-5.3 parts of hydrochloric acid, 8.87-10 parts of distilled water, 60-100 parts of solvent and 5-30 parts of ethyl alcohol into a container, raising the temperature to 60-80 DEG C, conducting stirring for 3-5 h at the constant temperature, adding hexamethyldisiloxane as extract liquor to obtain MQ resin mixed liquor, standing to achieve layering, adding a methylbenzene and potassium hydroxide aqueous solution to an obtained upper layer solution, conducting dehydration condensation polymerization for 3-4 h at the temperature of 90-100 DEG C to obtain an MQ resin methylbenzene solution, adding calcium chloride for drying after the pH value is regulated to 7, and then conducting vacuum filtration and reduced pressure distillation.

The invention provides a culture medium for phalaenopsis amabilis tissue culture. The culture medium comprises the following components: 1900 mg / L of KNO3; 1650 mg / L of ammonium nitrate; 170 mg / L of potassium dihydrogen phosphate; 370 mg / L of magnesium sulfate heptahydrate; 440 mg / L of calcium chloride dihydrate; 0.60-0.62 mg / L of KI; 4.5-4.8 mg / L of boric acid; 25.0-25.3 mg / L of manganese sulfate tetrahydrate; 7.0-7.2 mg / L of zinc sulfate heptahydrate; 0.20-0.22 mg / L of sodium molybdate dihydrate; 0.025 mg / L of copper sulfate pentahydrate; 0.025 mg / L of cobalt chloride hexahydrate; 37.25 mg / L of Na2.EDTA; 27.85 mg / L of ferrous sulfate heptahydrate; 100 mg / L of inositol; 2 mg / L of glycine; 0.1 mg / L of thiamine hydrochloride; 0.5 mg / L of pyridoxine hydrochloride; 0.5 mg / L of nicotinic acid; 20-22 g / L of sucrose; 5-5.2 g / L of agar; 30-35 g / L of a banana juice; 3-5 g / L of a pear juice; 0.45-0.48 g / L of activated carbon; and a solvent being deionized water. With application of the culture medium to culture phalaenopsis amabilis, the survival rate is more than 96%, the bacteria infection rate is 2.7-2.8%, and the browning degree of the culture medium is 30-40% lower than that of an MS culture medium.

Belonging to the immobilized enzyme field, the invention discloses a preparation method for an immobilized 3-phenoxy benzoic acid degrading enzyme. The method includes the steps of: (1) centrifuging a Sphingomonas sp. SC-1 fermentation liquid, collecting thalli, mixing the thalli with a Tris-HCl buffer solution evenly, then conducting ultrasonic crushing under ice water bath, performing centrifugation to remove intracellular enzyme, adding the Tris-HCl buffer solution to cell debris deposits to a volume before crushing to make an enzyme solution; and (2) mixing the enzyme solution with a sodium alginate solution in certain proportion, dripping the mixed solution in a calcium chloride solution uniformly to perform embedding immobilization. The immobilized 3-phenoxy benzoic acid degrading enzyme prepared by the invention has high enzyme activity under a wide temperature range (4DEG C-40DEG C) and a wide pH range (5.0-9.0), and has strong continuous reaction performance. The preparation method is simple, and the production cost is low.

The invention discloses ice and snow resistant, and corrosion-proof coating which comprises the following materials by weight: 1.0 to 1.5 portion of silicone oil, 1.0 to 1.5 portion of organosilicon water repellent compound, 2.0 to 2.5 portion of calcium chloride, 0.8 to 1.2 portion of organosilicon defoamer, and1.0 to 1.5 portion of methylvinylsilicone rubber. The coating has the properties both as inorganic material and organic material, both can resist high and low temperature; insulate electric appliances; resist ozone, flame; is hydrophobic, corrosion-proof, weatherable, innoxious, tasteless, physiologically inert with small surface tension; and has low viscosity-temperature coefficient and can resist compression well. The coating can effectively prevent outdoor facilities, such as high voltage electric steel towers, communication equipment and so on, from being frozen. In addition, the coating further has radiation resistance.

The invention relates to a waterproof material for water leakage repair and a preparation method thereof. The waterproof material comprises the following components in parts by mass: 3-15 parts of acrylamide, 0.01-0.04 part of calcium chloride, 0.04-0.09 part of methylene bisacrylamide, 0.1-0.7 part of triethanolamine, 0.01-0.08 part of sodium sulfite, 0.04-0.06 part of polyacrylamide, 0.2-2 parts of ammonium persulfate and 60-110 parts of water. The waterproof material provided by the invention has the advantages of being reasonable in material matching, low in manufacturing cost, convenient in production and processing and the like, and the prepared waterproof material is significant in waterproof performance.

The invention discloses a method using a solvothermal method to prepare a C3N4 / CaTi2O5 composite material. The method includes: dissolving the compound of titanium into organic solvent, and evenly stirring to obtain a solution A; dissolving calcium chloride into distilled water, adding an organic solvent, and evenly stirring to obtain a solution B; dropwise adding the solution A into the solution B in a stirring state, and adding a strong acid solution to form precursor CaTi2O5; evenly mixing the precursor CaTi2O5 with an organic solvent and distilled water to obtain a mixed solution C; adding C3N4 into the mixed solution C to obtain a suspension solution D, adding a strong acid solution into the suspension solution D, placing into a reactor kettle for reaction, washing, and drying to obtain the C3N4 / CaTi2O5 composite material. The method has the advantages that the light response range of the CaTi2O5 is expanded, the photocatalytic performance of the CaTi2O5 is improved, and accordingly the prepared C3N4 / CaTi2O5 composite material is promising in market prospect.

The invention discloses corrosion-resisting autoclaved aerated concrete block. The corrosion-resisting autoclaved aerated concrete block is prepared from the following materials in parts by weight: 10-20 parts of cement, 35-50 parts of diatomite, 0.15-0.2 part of zinc powder, 3-5 parts of aluminum chloride, 0.2-0.4 part of potassium hydroxide, 0.3-0.6 part of caustic soda, 0.5-0.8 part of calcium chloride, 0.1-0.2 part of calcium hydroxide, 0.4-0.8 part of coconut oil fatty acid glycollic diamide, 0.1-0.2 part of polypropylene fiber, 18-30 parts of fluorgypsum and 10-20 parts of modified filler. The corrosion-resisting autoclaved aerated concrete block disclosed by the invention is reasonable in dosing, good in thermal-insulation effect and light in weight; and meanwhile, the chemical acid and alkaline resistance is strong.

The invention relates to a method for analyzing a mother liquor of N-(phosphonomethyl)iminodiacetic acid (PMIDA), in particular to a method for analyzing the mother liquor generated during producing the PMIDA by taking iminodiacetonitrile as a raw material. The method comprises the steps of independently measuring contents of PMIDA, nitrilotriacetic acid and iminodiacetic acid in the mother liquor and measuring polybasic acids such as PMIDA, phosphoric acid, phosphorous acid and the like step by step, strengthening the weak acid by adding calcium chloride to release inactive hydrogen quantificationally and measuring the phosphoric acid, the nitrilotriacetic acid and the PMIDA and skillfully measuring the contents of the iminodiacetic acid, the PMIDA, the nitrilotriacetic acid, the phosphorous acid, hydrochloric acid and the phosphoric acid in the mother liquor of PMIDA according to the reaction law and interrelation of substances. The verification shows that the method v is accurate, comprehensive, scientific and reasonable, is simple to operate and provides reliable ground for recycling and comprehensively utilizing the mother liquor of PMIDA and has good application value.