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N,N-Diethylhydroxylamine CAS:3710-84-7
N,N-Diethylhydroxylamine CAS:3710-84-7
chemical properties
Colorless transparent liquid. It smells like ammonia. Easily soluble in water, soluble in ethanol, ether, chloroform, benzene.
It is used as olefin polymerization inhibitor, terminal polymerization inhibitor, and as vinyl monomer in the production process of synthetic rubber. As an antioxidant and stabilizer, it can be widely used in photosensitive resins, photosensitive emulsions, synthetic latex, etc. It can also be used as a terminator for emulsion polymerization, photochemical smog inhibitor, etc. This sulfate is a tone balancing agent for color development.
Packaging, storage and transportation
Packed in plastic liner barrels or resin barrels. This product should be stored sealed in a cool, dry warehouse and protected from fire. -
Dipropylamine CAS No.：142-84-7
Dipropylamine, also known as di-n-propylamine, is a flammable, highly toxic corrosive liquid that exists in nature in tobacco leaves and artificially discharged industrial waste.
Di-n-propylamine is a colorless and transparent liquid. There is an ammonia smell. Can form hydrates. Easily soluble in water, ethanol and ether. Forms hydrate with water. Density 0.738, melting point -63℃, boiling point 110℃, flash point 17℃, refractive index 1.40445。
Di-n-propylamine can be used as a solvent and an intermediate in the production of pharmaceuticals, pesticides, dyes, mineral flotation agents, emulsifiers and fine chemicals. The preparation method is to use propanol as raw material, and obtain it through catalytic dehydrogenation, ammoniation, dehydration and hydrogenation. The reaction catalyst is Ni-Cu-Al2O3, the pressure is (39±1)kPa, the reactor temperature is (Chemicalbook190±10)℃, the space velocity of propanol is 0.05~0.15h-1, and the raw material ratio is propanol:ammonia ∶Hydrogen = 4:2:4, dipropylamine and tripropylamine are obtained at the same time, and dipropylamine can be obtained by fractionation. -
Diethylenetriaminepentaacetic acid CAS: 67-43-6
Diethylenetriaminepentaacetic acid CAS: 67-43-6
Diethylenetriaminepentacetic acid (DTPA), also called diethylenetriaminepentacetic acid, is an excellent aminocarboxylic complexing agent with strong chelating properties. The complex it forms with most cations is better than that of ethylenediaminetetraacetic acid. The corresponding chelate should be stable。
As a high-efficiency chelating agent, diethylene triamine pentaacetic acid can be used in color inhibitors in acrylic fiber production, paper industry, water softeners, textile auxiliaries, chelating titrants, color photography and food industries. It is also used in medical, rare earth elements It is also widely used in separation and agricultural production.
This product is white crystal or crystalline powder. Melting point 230 ℃ (decomposition), soluble in hot water and alkali solution, slightly soluble in cold water, insoluble in organic solvents such as alcohol ethers。 -
DIALLYL ISOPHTHALATE CAS: 1087-21-4
DIALLYL ISOPHTHALATE CAS: 1087-21-4，Also known as level four reagent。Belongs to propyl ester compounds。
Diallyl isophthalate polymers are very similar in preparation, properties and applications to the diallyl isophthalate polymers described above. Moldings based on diallyl isophthalate are more expensive but offer enhanced thermal stability (can withstand temperatures up to approximately 220°C for long periods of time) and resistance to organic solvents.
It is a light yellow oily liquid. Slightly smelly. Miscible with ethanol, insoluble in water.
Mainly used for biochemical research. Organic Synthesis. Preparation of high temperature resin。 -
N,N-Bis(2-cyanoethyl)aniline CAS: 1555-66-4
N,N-Bis(2-cyanoethyl)aniline CAS: 1555-66-4
White crystal powder. Easily soluble in organic solvents, dilute acids and dilute alkali, but insoluble in water. Used as dye intermediate。
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N,N-Dimethylbenzylamine CAS: 103-83-3
N,N-Dimethylbenzylamine CAS: 103-83-3
N,N-dimethylbenzylamine is often used as a reagent in organic synthesis and as a catalyst for the synthesis of polyurethane foam and epoxy resin. It reacts with Os3(CO) to form a triosmium cluster.
N,N dimethylbenzylamine in methanol-tetra-N-butyl ammonium fluoroborate and methanol-potassium hydroxide. Used in the synthesis of bis[(N,N-dimethylamino)benzyl]selenoether. It can also be used as an organic synthesis intermediate, dehydrogenation catalyst, preservative, acid neutralizer, etc.
It is colorless to light yellow flammable liquid. It smells like ammonia. Easily soluble in ethanol and ether, hardly soluble in water.
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4-Methyldiphenylamine CAS: 620-84-8
4-Methyldiphenylamine CAS: 620-84-8
Organic raw materials: cycloalkylamines, aromatic monoamines, aromatic polyamines and their derivatives and salts。Appearance is white crystal。Mainly used for organic synthesis intermediates, synthesis of organic functional materials and medicines, as well as photochemistry and liquid crystal intermediates. Insoluble in water. Soluble in benzene, toluene,methanol, ethanol。 for the storage condition ,Keep in dark place,Sealed in dry,Room Temperature.
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N,N-Dimethylacetamide CAS: 127-19-5
N,N-Dimethylacetamide CAS: 127-19-5
Chemical properties: The chemical properties are very similar to N,N-dimethylformamide, and it is a representative amide solvent. In the absence of acid or alkali, it will not decompose when heated to boiling under normal pressure, so it can be distilled under normal pressure. The hydrolysis rate is very slow. When N,N-dimethylacetamide containing 5% water is heated at 95°C for 140 hours, only 0.02% is hydrolyzed. However, in the presence of acid and alkali, the hydrolysis rate increases. Saponification occurs when heated in the presence of a strong alkali.
application
1. Pharmaceutical intermediate dimethylacetamide is an important pharmaceutical raw material and is widely used in the production of amoxicillin, cephalosporins and other drugs. As a solvent or cocatalyst, dimethylacetamide can improve product quality and yield compared with traditional organic solvents. In 2000, the demand for dimethylacetamide in the pharmaceutical industry was approximately 6kt. The demand for dimethylacetamide in 2006 was approximately 9.6kt. 2. Acrylic fiber production In the production of acrylic fiber, some use the dimethylacetamide route. At present, domestic acrylic fiber production Chemicalbook mainly includes sodium thiocyanate two-step method, dimethylformamide one-step method and dimethylacetamide organic wet method according to solvents. From the perspective of process and equipment characteristics, material consumption, environmental impact, product quality, Many factors such as post-processing performance, localization rate and foreign development trends have increased application research and promotion efforts. Dimethylacetamide was used as a comprehensive comparison. Sodium thiocyanate two-step method and dimethylacetamide organic wet method were used. The most promising development. At present, many acrylic fiber installations in China use wet processes using dimethylacetamide as the solvent. -
Allyl alcohol CAS: 107-18-6
Allyl alcohol CAS: 107-18-6
nature
Colorless liquid with pungent mustard odor. Relative density o. 8520. Freezing point -129℃. Boiling point 96.9℃. The critical temperature is 271.9℃. Flash point (closed cup) 22.2℃. It becomes vitreous at -190℃. Refractive index 1. 4132. Miscible with water, ether, ethanol, chloroform and petroleum ether.
use
It is an intermediate for the production of glycerin, pharmaceuticals, pesticides, spices and cosmetics, and is also a raw material for the production of diallyl phthalate resin and bis(2,3-bromopropyl)fumarate. Silane derivatives of allyl alcohol and copolymers with styrene are widely used in coatings and glass
fiber industry. Allyl urethane can be used in photosensitive polyurethane coatings and casting industries.
safety
It has a special odor and can strongly irritate the eyes, skin, throat, and mucous membranes. In severe cases, it can cause blindness. Adhering to the skin can cause it to turn red and cause burns, and is rapidly absorbed through the skin, causing liver disorders, nephritis, hematuria and other symptoms. One of the most toxic alcohols, the oral LD50 in rats is 64rng/kg. Dog oral LD50 40mg/kg. The maximum allowable concentration in the air at the production site is 5rng/m3. At this concentration, the irritation is very strong and cannot be tolerated for a long time. If it splashes on the skin, rinse with water and apply grease-based medicine. Wear protective equipment when operating. -
Dicyclohexylamine CAS：101-83-7
Dicyclohexylamine CAS：101-83-7
Dicyclohexylamine is prepared by using aniline as raw material and hydrogenating it at high temperature and high pressure in the presence of a catalyst.
It is widely used as an intermediate in organic synthesis and can be used to prepare dye intermediates, rubber accelerators, nitrocellulose paints, insecticides, catalysts, preservatives, gas phase corrosion inhibitors and fuel antioxidant chemical book additives, etc. Also used as an extraction agent. Fatty acid salts and sulfates of dicyclohexylamine have the stain-removing properties of soap and are used in the printing, dyeing and textile industries. Its metal complexes are used as catalysts for inks and paints.
Colorless and transparent oily liquid with pungent ammonia smell. Slightly soluble in water, miscible with organic solvents. -
N-Methylformamide（NMF） CAS：123-39-7
N-Methylformamide（NMF） CAS：123-39-7
Pure N-methylformamide is a colorless, transparent and viscous liquid, m.p.-3.8℃, b.p.198℃, n25D 1.4310, relative density 0.9986 (25℃), soluble in water, can also dissolve inorganic salts, and is hygroscopic. Easily decomposes in acidic or alkaline solutions.
N-methylformamide is an important organic synthetic raw material. It is used in the synthesis of pesticides, insecticides and acaricides monoformamidine and diformamidine. It is also used in the production of medicine, synthetic leather, artificial leather, and as a solvent for chemical fiber textiles. .
Production method 1. Methylamine method is produced by the reaction of methylamine and carbon monoxide. 2. Methyl formate method is obtained by the reaction of methyl formate and methylamine. 3. Obtained from the reaction of ethyl formate and methylamine. Add ethyl formate into the reactor, add methylamine aqueous solution under cooling, and reflux the reaction at 40°C. Then it was left for 3 days, and ethanol was recovered under reduced pressure to obtain crude product. The finished product is obtained by distillation under reduced pressure.
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3-Dimethylaminopropylamine CAS: 109-55-7
Diamine is an important class of chemical substances that are widely used as raw materials, intermediates or products. For example, diamine is an important structural unit in the synthesis of polyamide and other condensation polymerization reactions. N,N-dimethyl-1Chemicalbook,3-diaminopropane (DMAPA) is an important intermediate, used for example in the industrial preparation of lubricants. In addition, DMAPA is used as a raw material for the preparation of coagulants and itself should have Anti-corrosion properties.
It is colorless transparent liquid. Soluble in water and organic solvents. Widely used in the manufacture of cosmetic raw materials, such as palmitamide dimethylpropylamine, cocamidopropyl betaine, mink oil amidopropylamine, etc.
Using dimethylaminopropionitrile [1738-25-6] as raw material, hydrogenation and methanol are added in the presence of Ni-Al catalyst, and then filtered and distilled to obtain the finished product of 3-dimethylaminopropylamine. The purity of the obtained product can reach more than 99%, and each ton of product consumes 1150kg of dimethylaminopropionitrile.
