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2-Acrylamide-2-methylpropanesulfonic acid CAS 15214-89-8
2-Acrylamide-2-methylpropanesulfonic acid (AMPS) is a vinyl monomer with a sulfonic acid group. It has good thermal stability, with a decomposition temperature up to 210°C, and its sodium salt homopolymer has a decomposition temperature up to 329°C. In aqueous solution, the hydrolysis rate is slow, and sodium salt solution has excellent hydrolysis resistance under high pH conditions. Under acidic conditions, the hydrolysis resistance of its copolymer is much higher than that of polyacrylamide. The monomer can be made into crystals or into an aqueous solution of sodium salt. 2-Acrylamide-2-methylpropanesulfonic acid has good complexing properties, adsorption properties, biological activity, surface activity, hydrolysis stability and thermal stability.
Usage
1. Water treatment: The homopolymer of AMPS monomer or copolymer with acrylamide, acrylic acid and other monomers can be used as a sludge dehydrating agent in the sewage purification process, and can be used as iron, zinc, aluminum, and copper in closed water circulation systems. As well as corrosion inhibitors for alloys; it can also be used as descaling and antiscaling agents for heaters, cooling towers, air purifiers and gas purifiers.
2. Oilfield chemistry: The application of products in the field of oilfield chemistry is developing rapidly. The scope of involvement includes oil well cement admixtures, drilling fluid treatment agents, acidizing fluids, fracturing fluids, completion fluids and workover fluid additives, etc.
3. Synthetic fibers: AMPS is an important monomer that improves the comprehensive properties of some synthetic fibers, especially acrylic or acrylic fibers. Its dosage is 1% -4% of the fiber, which can significantly improve the whiteness and dyeability of the fiber. , antistatic, breathable and flame retardant.
4. Sizing for textiles: A copolymer of 2-acrylamido-2-methylpropanesulfonic acid, ethyl acetate, and acrylic acid. It is an ideal sizing agent for cotton and polyester blended fabrics. It is easy to use and easy to remove with water. Features.
5. Papermaking: The copolymer of 2-acrylamide-2-methylpropanesulfonic acid and other water-soluble monomers is an indispensable chemical for various paper mills. It can be used as a drainage aid, a sizing agent, and increases The strength of paper and also serves as a pigment dispersant for color coatings
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(2-CARBOXYETHYL)DIMETHYLSULFONIUM CHLORIDE CAS: 4337-33-1
DMPT is the most effective fourth-generation aquatic food attractant discovered so far. Some people use the term "fish bites stones" to vividly describe its food attractant effect - even if it is painted on a stone, fish will bite it. Stone. The most typical use of DMPT is as fishing bait to improve the bait's attractiveness and make it easier for fish to bite the hook. The industrial use of DMPT is as a green aquatic feed additive to promote feed intake of aquatic animals and increase their growth rate.
The earliest dimethyl-beta-propionate thiatin is a pure natural compound extracted from seaweed. In fact, the process of discovering dimethyl-beta-propionate thiatin also started from seaweed: scientists observed that seawater fish I like to eat seaweed, so I started to study the food-attracting factors in seaweed. Later I found that the reason why fish like to eat seaweed is that seaweed contains natural DMPT.
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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.
