67 results about "Ethylenediamine hydrochloride" patented technology

The invention belongs to the field of chemical detection and particularly relates to test paper for rapidly detecting nitrite and a preparation method and application of the test paper. According preparation method, the test paper for rapidly detecting the nitrite is prepared by taking a filter paper body as a carrier, a p-aminobenzene sulfonic acid solution and an N-1-naphthyl ethylenediamine hydrochloride as color developing agents, as well as an ethanol water solution of polyvinyl alcohol as a surface protectant and can be used for detecting the content of the nitrite. The test paper is low in cost, convenient and rapid to use and has long-term stability.

The invention provides a water quality nitrite detection agent, and relates to a field detection technology for nitrite content in a water media. The water quality nitrite detection agent is prepared by mainly mixing sulfanilamide, N-(1-naphthyl)-ethylenediamine hydrochloride, phosphoric acid, sodium sulfate and the like according to a certain ratio. During use, the water quality nitrite detection agent is directly dissolved in 10 ml of a water sample, mixing is performed for 1-2 min to dissolve, and a spectrophotometer or a tintometer is adopted to measure. The water quality nitrite detection agent has the following characteristics that: carrying is convenient, the water quality nitrite detection agent is easy to store, any reagents are not required to be added during use, the result is accurate and reliable, and the water quality nitrite detection agent is applicable for field detection of the nitrite content in the water quality sample.

The invention discloses an antistatic anti-yellowing PP/POE plastic for automotive interior parts and a preparation method thereof. The antistatic anti-yellowing PP/POE plastic for automotive interior parts comprises the following components in parts by weight: 100 parts of PP resin, 15-30 parts of POE plastic, 2-15 parts of antistatic agent and 0.5-2 parts of anti-yellowing agent. Preferably, the antistatic agent is one or a mixture of more of glyceryl monopalmitate, N-oleoyl-N',N'-diethyl ethylenediamine-hydrochloride, 3-sulfopropyl dodecyl dimethyl betaine and carbon black; and the anti-yellowing agent is one or a mixture of more of dibutyl hydroxy toluene, tri(2,4-di-tert-Butylphenyl)phosphite, 4,4'-di(phenylisopropyl)diphenylamine and pentaerythritol tetra[beta-(3,5-di-tert-Butyl-4-hydroxyphenyl)propionate]. According to the invention, the antistatic anti-yellowing PP/POE plastic has low production cost, good processability, favorable antistatic property and anti-yellowing property and environment friendliness. The antistatic anti-yellowing PP/POE plastic for automotive interior parts is especially suitable for injection molding of various automotive interior parts.

The invention discloses a vanadium trichloride mixed powder and the application thereof in quickly measuring the nitrate content in the food. The vanadium trichloride mixed powder is composed of sodium chloride, sulfamic acid, sulfanilic acid, naphthyl ethylenediamine hydrochloride and vanadium trichloride. When the vanadium trichloride mixed powder is applied to quickly measure the nitrate content in the food, firstly, the food is homogenized and then metered in volume by using the acetic acid solution. After that, the homogenized food is oscillated and filtered to obtain a sample solution. Secondly, the vanadium trichloride mixed powder is added into the sample solution, and the obtained product is shaken uniformly, subjected to water bath and cooled. The light absorption value of the obtained product is measured and then the nitrate content is calculated according to a standard curve. According to the technical scheme of the invention, the method is simple and easy to operate, fast, short in consumed time, sensitive, accurate, small in reagent consumption, and low in cost. Meanwhile, an operator can master the method without being specially trained. Moreover, reagents adopted in the method are not volatilized, free of odors and extremely small in toxicity to human bodies. The mixed power is good in stability. The detection reagent is harmless to the environment and human bodies. Therefore, the vanadium trichloride mixed powder has a wide application prospect in detecting the nitrate content in the rapid detection field of food especially the rapid detection field of fresh vegetables.

The invention discloses a continuous production reaction device and a continuous production reaction method for N-(beta-aminoethyl)-gamma-aminopropyltrimethoxysilane, which belong to the technical field of silane coupling agents. The invention designs a tower-type continuous reaction device, wherein a mixed solution of ethylenediamine and chloropropyl trimethoxysilane, which is sprayed downwards from the top of a reaction tower (2) finishes reaction in a falling process in the reaction tower (2) under the excessive protection of ascending ethylenediamine vaporization liquid, and is automatically pumped into a continuous sedimentation liquid separator by a material transfer pump (12) for automatically controlling the amount of a reaction liquid in a reaction kettle (3) to perform continuous liquid separation; the obtained clear liquid is rectified to obtain N-(beta-aminoethyl)-gamma-aminopropyltrimethoxysilane. The device disclosed by the invention is matched with the process, and continuous reaction and continuous liquid separation can be performed to realize production; the consumption of ethylenediamine is effectively reduced, and both purity and yield are high; the production efficiency is improved while the reaction continuity is ensured, and no ethylenediamine hydrochloride in the separated clear liquid can also be ensured.

The invention discloses a synthesis method of EPS-RB nanometer particles for photodynamic bacterium resistance. Lactobacillus plantarum exopolysaccharides EPS, rose-bengal RB, 1-(3-dimethylaminopropyl)-3-ethylenediamine hydrochloride EDC-HCl and N-hydroxysuccinimide NHS are used as raw materials; reaction is performed in dimethyl sulfoxide DMSO to obtain compounds EPS-RB; the compounds EPS-RB aresubjected to self assembly to form spherical nanometer particles in a water solution; a good photodynamic bacterium resistance effect is achieved. The compound can realize the self aggregation in thesolution to form nanometer particles; the nanometer particles generates singlet oxygen higher than free RB under the light illumination condition, so that the photodynamic bacterium resistance on escherichia coli and staphylococcus aureus is superior to that of the free RB. The concentration required by EPS-RB nanometer particles for completely killing escherichia coli and staphylococcus aureus isrespectively 8mu M and 500nM; the concentration required by the free RB is respectively 16 mu M and 1000nM.

The invention discloses a preparation method of N-(3-chlorine-4-(2-pyridine methoxy)phenyl)-2-cyanoacetamide. The method comprises the following steps: under the existence of 1-(3-dimethylaminopropyl)-3-ethylenediamine hydrochloride, 1-hydroxybenzotriazole and triethylamine, carrying out a reaction of 3-chlorine-4-fluoroaniline and cyanoacetic acid to generate N-(3-chlorine-4-fluorophenyl)-2-cyanoacetamide; under the existence of lithium hydroxide, continuously carrying out a reaction with 2-pyridylcarbinol to generate the N-(3-chlorine-4-(2-pyridine methoxy)phenyl)-2-cyanoacetamide. The method is simple in step, mild in reaction condition, high in product yield and easy in mass production. (The formula is shown in the description).

The invention discloses Rhodopseudomonas palustris P-3. The preservation number of the Rhodopseudomonas palustris P-3 is CCTCC (China Center For Type Culture Collection) NO: M 2020808. According to the strain, photosynthetic bacteria are separated and purified by adopting a double-layer plate coating method and a streaking method, vibrio parahaemolyticus, vibrio vulnificus and vibrio anguillarum are used as indicator bacteria, and the bacteriostatic action of the marine photosynthetic bacteria strain is determined by adopting an oxford cup method. Naphthalene ethylenediamine hydrochloride spectrophotometry and indophenol blue spectrophotometry are adopted to determine the nitrite nitrogen and ammonia nitrogen degradation effects of different strains, and screening is performed to obtain the product. The strain P-3 has the composite functions of resisting vibrio and efficiently degrading nitrite nitrogen and ammonia nitrogen, has a strong inhibition effect on vibrio anguillarum, has thestrongest effect on vibrio anguillarum, and also has a certain nitrite nitrogen and ammonia nitrogen degradation effect. The strain P-3 is cultured in a culture medium containing 50mg/L ammonia nitrogen and nitrite nitrogen for 4 days, the degradation rates are 89.68% and 94.98% respectively, and the strain P-3 has a wide application prospect.

The invention discloses a hexavanadate-L-alanine methyl ester derivative and a preparation method and application of the hexavanadate-L-alanine methyl ester derivative, and belongs to the technical field of organic and inorganic hybrid materials. The hexavanadate-L-alanine methyl ester derivative has an anti-tumor activity, the structural formula is [Bu4N]2[V6O13]{(OCH2)3CCH2OOCCH2CH2CONHCH(CH3)CH2COOCH3}2]; the preparation method comprises the following steps: adding 1-(3-dimethyl aminopropyl)-3-ethylenediamine hydrochloride, 1-hydroxybenzotriazole, L-D-alanine methyl ester hydrochloride andtrimethylamine into an acetonitrile solution of the hexavanadate succinic acid derivative, dissolving, and reacting for 40-50 hours at the temperature of 48-52 DEG C to obtain the hexavanadate-L-alanine methyl ester derivative. The hexavanadate-L-alanine methyl ester derivative has an important research value and application prospect in the fields of pharmaceutical chemistry, and further providesa direction for the development of medicines.

The invention relates to a controlled release material for a fouling organism-sensitive response anti-fouling agent and a preparation method of the controlled release material. The controlled release material contains a coated precursor and a cross-linking agent; a hyaluronic acid/poly L-lysine controlled release material of a nano thin-shell structure is prepared through alternating layer-by-layer self-assembly of hyaluronic acid and poly L-lysine; a poly-(allylamine hydrochloride)/poly L-glycine controlled release material of the nano thin-shell structure is prepared through alternating layer-by-layer self-assembly of poly-(allylamine hydrochloride) and poly L-glycine; and the cross-linking agent is prepared by compounding 1-(3-dimethylamino propyl)-3-ethylenediamine hydrochloride and N-hydroxysulfosuccinimide sodium salt. For a water-soluble anti-fouling agent, a fouling organism-sensitive response nano thin-shell is prepared from sodium carbonate as a template and the anti-fouling agent is loaded; and a water-based insoluble or micro-soluble antifouling agent is directly coated with a fouling organism-sensitive response controlled release material. The controlled release material is simple in process and friendly to environment; the target of adaptive regulation of release of the anti-fouling agent along with fouling organism attachment change in low and peak seasons is achieved on the basis of a special catalytic hydrolysis characteristic of fouling organism extracellular protease on the controlled release material; and the anti-fouling period of the paint is prolonged.

The invention relates to a method for preparing anhydrous ethylenediamine from double-amino silane byproduct ethylenediamine dihydrochloride, and belongs to the technical field of fine chemical engineering. The method comprises the following steps: using double-amino silane byproduct ethylenediamine dihydrochloride and calcium oxide powder, under the condition that an ethanediamine solvent exists,stirring at the temperature of 80 to 115 DEG C for a neutralization reaction, directly distilling after the reaction is completed to obtain water-containing ethanediamine with the water content of 2%to 3%, then adding calcium oxide powder into the water-containing ethanediamine under the effect of a catalyst, stirring at the temperature of 100 to 115 DEG C for a dehydration reaction, and then distilling to obtain anhydrous ethanediamine with the water content of smaller than 0.2%. The equipment technology is simple, the raw materials are cheap and easy to get, the method is safe and environmentally-friendly, the product quality is high, the product is low in water content, the product can be used as a raw material directly, the economic benefit is improved, and the method is applicable for industrial production.

The present invention provides a detection reagent for the ammonia nitrogen content in industrial wastewater, and a detection method thereof. The detection reagent comprises N-(1-naphthyl)-ethylenediamine hydrochloride, diammonium phosphate, sodium metavanadate, trinitro salicylic acid, nitro ammonium phosphate, an inorganic acid and water. The detection method comprises: taking two detection reagents with the same volume, and adding industrial wastewater to be detected to the first detection reagent to form a first mixed solution; adopting the second mixed solution as a reference to observe the color change of the first mixed solution, wherein the color of the solution is changed into the purple red color from the colorless color when the ammonia nitrogen content in the industrial wastewater exceeds the standard; and recording the color change time. According to the present invention, the time for detecting whether the ammonia nitrogen content in the industrial wastewater exceeds the standard is only 2.1-2.4 min, such that the detection reagent of the present invention has the high detection efficiency compared with the detection reagent in the prior art.

The invention discloses a method for detecting chlordimeform in aquatic products. The method comprises the following steps: step a, extracting and preparing a to-be-detected sample solution; b, preparing a first sample solution; c, adding a sodium hydrosulfide solution and an ammonium sulfate solution for reaction to prepare a second sample solution; step d, adding calcium hydroxide, chlorine and air to prepare a third sample solution; step e, adding a sodium hydroxide solution to prepare a fourth sample solution; step f, adding a sodium nitrite solution and a hydrochloric acid solution to prepare a fifth sample solution; step g, adding a naphthyl ethylenediamine hydrochloride solution to prepare a sixth sample solution, standing, and observing the color change of the sixth sample solution; and step h, judging a result. The method disclosed by the invention is simple and easy to understand in principle, strong in specificity, high in sensitivity, visual in detection result, high in accuracy of the detection result, free of a large-scale analysis instrument, relatively less in time consumption and extremely low in average analysis cost, is specially suitable for on-site rapid detection of the chlordimeform content in the aquatic product, and has very strong practicability.

The invention discloses a detection reagent of nitrite in water and a preparation method of the detection reagent. The detection reagent comprises the following components in parts by mass: 1-2 parts of N-(1-naphthyl)-ethylenediamine dihydrochloride, 40-50 parts of polyvinylpyrrolidoneK-30, 5-10 parts of manganese sulfate, 15-20 parts of sulfanilamide, 40-50 parts of hydrochloric acid, 2-5 parts of sodium bicarbonate and 2-3 parts of sodium molybdate. The preparation method of the detection reagent comprises the following steps: a, uniformly mixing N-(1-naphthyl)-ethylenediamine dihydrochloride, polyvinylpyrrolidoneK-30 and sulfanilamide; b, fully mixing hydrochloric acid, manganese sulfate and sodium molybdate with sodium bicarbonate; c, uniformly mixing a substance A with a substance B. By utilizing the detection reagent of nitrite in water, the detection of nitrite in a water sample can be completed in the field; the detection reagent has the advantages of being simple in operation, high in accuracy and high in speed.

The invention discloses a laundry detergent with antibacterial effect, which comprises the following components in parts by weight: 10-15 parts of dodecyl dimethyl benzyl ammonium bromide, 5-10 parts of dioctadecyl dimethyl ammonium chloride 5-10 parts of ethylenediamine hydrochloride, 8-15 parts of fatty alcohol polyoxyethylene ether, 0.1-0.5 parts of thickener, 0.1-0.5 parts of chelating agent, 80-10 parts of deionized water 95 servings. The present invention adopts three kinds of cationic surfactants and nonionic surfactants to compound, and through the unique ratio, it can achieve synergistic antibacterial effect, not only can effectively kill Gram-positive bacteria and Gram-negative bacteria, but also It can kill fungi and has a good bactericidal effect.

The invention discloses a preparation method of stable nitrite test paper, and the preparation method is characterized in that the method comprises the following steps: preparation of a soak solution: dissolving tartaric acid, sulfanilamide and N-(1-naphthyl) ethylenediamine hydrochloride in water to prepare the soak solution; preparation of test paper: soaking rapid quantitative filter paper in the soak solution for 2-5 minutes, taking out and drying, then soaking in a protective agent coating solution for 5-15 seconds, taking and drying immediately, wherein the prepared test paper is white; and preparation of a test strip: cutting the test paper into paper strips of 6mm, pasting the paper strips on a plastic plate by using glue or a double-sided adhesive tape, cutting the paper strips into test strips of 0.6 mm by using a paper cutter, and preserving the test strips in a dark place. The nitrite test paper provided by the invention has a nitrite detection range of 0-80mg/L, and is suitable for detecting nitrite in water bodies such as surface water, sewage and seawater. The test paper is good in stability and can be stored at normal temperature.

The invention discloses a high-efficiency disinfecting laundry liquid, which comprises the following components in parts by weight: 10-15 parts of dodecyl dimethyl benzyl ammonium bromide, 5-10 parts of didecyl dimethyl ammonium chloride, 5-10 parts of ethylenediamine hydrochloride, 8-15 parts of fatty alcohol polyoxyethylene ether, 0.1-0.5 parts of thickener, 0.1-0.5 parts of chelating agent, 80-95 parts of deionized water . The present invention adopts three kinds of cationic surfactants and nonionic surfactants to compound, and through the unique ratio, it can achieve synergistic antibacterial effect, not only can effectively kill Gram-positive bacteria and Gram-negative bacteria, but also It can kill fungi and has a good bactericidal effect.