Chemical descriptionProduct Name: Copovidone (PVP VA 64)Brand Name: BOVIDONE®VA64CAS number: 25086-89-9Chemical name: vinylpyrrolidone/vinyl acetate copolymerCEP Registration number: 2019-199DMF registration number: 33953 Physicochemical propertiesWhite to light yellow hygroscopic powder, good fluidity, hygroscopicity lower than POvidone;Soluble in water, ethanol and other organic solvents, the glass transition temperature is low;It is an excellent film forming agent; Product standardMeets USP/NF, EP, JP, BP standards Typical characteristic specification serial number test item european pharmacopeas standards 1 viscosity 27.0-33.0 2 loss on drying ≤5.0% 3 Impurity A (2-pyrrolidone) ≤0.5% 4 peroxide ≤400ppm 5 heavy metal ≤10ppm 6 Impurity B (1-vinyl-2-pyrrolidone) ≤10ppm 7 Impurity C (vinyl acetate) ≤10ppm 8 Elemental impurity accord with ICH Q3D ApplyUsed as a dry adhesive for direct pressing tablets, adhesives for tablets, capsules and granules by wet process;As an excellent film forming agent, it is used in the coating solution of tablets, particles, pellets and sugar-coated core and in the spray for…

Product information Name: 95% industrial grade glycerinOrigin: GuangdongPacking: 250KG/ barrelModel: — Operation precautions: closed operation, local exhaust. Prevent the release of dust into the workshop air. Operators must be specially trained and strictly abide by the operating procedures. It is recommended that operators wear self-priming filter dust masks, chemical safety protective glasses, rubber acid and alkali resistant clothing, and rubber acid and alkali resistant gloves. Keep away from fire and heat. No smoking in the workplace. Use explosion-proof ventilation systems and equipment. Avoid producing dust. Avoid contact with oxidants and acids. Equipped with the corresponding variety and quantity of fire equipment and leakage emergency treatment equipment. Empty containers may have harmful residues. Storage precautions: Store in a cool, ventilated warehouse. Keep away from fire and heat. Keep out of direct sunlight. The package is sealed. It should be stored separately from oxidizers and acids, and should not be mixed. Equipped…

1, 2-pentanediol An organic compound, colorless transparent liquid with a relative density of 0.971, soluble in organic solvents such as alcohol, ether, and ethyl acetate. 1, 2-pentanediol is the key raw material for the synthesis of propiconazole. Chinese name: 1, 2-pentanediol Foreign name 1,2-Pentanediol Product appearance: colorless liquid with slight characteristic smell Solubility: Water soluble Refractive index: n20/D1.439(lit.) CAS: 5343-92-0 Density: 0.971g/mlat25℃(lit.) Boiling point: 206℃(lit.) Molecular formula :C5H12O2 Molecular weight :104.1476 A moisturizing agent with antiseptic properties 1) Good skin moisturizing effect; 2) Excellent broad-spectrum antibacterial activity, its ingredients are not registered as preservatives, and can be claimed to contain no preservatives when used alone, reducing irritations and allergies caused by preservatives; 3) It has good synergistic effect with common preservatives and can be used as anti-corrosion additives; Reduce the amount of traditional preservatives, strengthen the anti-corrosion effect of products, reduce product stimulation; 4) Good solvent for active ingredients; 5)…

Polyvinylpyrrolidone (Polyvinylpyrrolidone) is a non-ionic water-soluble polymer, both within the molecule hydrophilic groups, and oleophilic groups, so that it is soluble in water, but also soluble in most organic solvents (such as alcohols, carboxylic acids, amines, halogenated hydrocarbons, etc.), very low toxicity, good physiological compatibility. The function of polyvinylpyrrolidone Polyvinylpyrrolidone (PVP) is a versatile ingredient that, according to the Cosmetics Database [1] and CosmeticsInfo.org[2], acts as an adhesive, emulsifying stabilizer, suspension, and hair styling in cosmetics and beauty products. It is found mainly in mascara, eyeliner, conditioner, hair gel, shampoo and other hair care products. It prevents the separation of water and oil in the emulsion and allows the ingredients in the compressed powder to bond together. Polyvinylpyrrolidone also forms a dry film on the surface of skin, nails and hair. When it becomes an ingredient in hair care products, it prevents hair from absorbing moisture and styling hair. It…

Product informationName: N-methylpyrrolidone 99.9%Packing: 200KG/ barrelModel: NMP Operation precautions: closed operation, local exhaust. Prevent the release of dust into the workshop air. Operators must be specially trained and strictly abide by the operating procedures. It is recommended that operators wear self-priming filter dust masks, chemical safety protective glasses, rubber acid and alkali resistant clothing, and rubber acid and alkali resistant gloves. Keep away from fire and heat. No smoking in the workplace. Use explosion-proof ventilation systems and equipment. Avoid producing dust. Avoid contact with oxidants and acids. Equipped with the corresponding variety and quantity of fire equipment and leakage emergency treatment equipment. Empty containers may have harmful residues.Storage precautions: Store in a cool, ventilated warehouse. Keep away from fire and heat. Keep out of direct sunlight. The package is sealed. It should be stored separately from oxidizers and acids, and should not be mixed. Equipped with the corresponding variety and…

Chinese name :PVPP(polyethylene polypyrrolidone)English name :PVPPCAS:25249-54-1Level :ReagentGradeMolecular weight :N/AMolecular formula (C6H9NO)nPurity :>99%Storage condition :RTProduct introductionChinese alias: crosslinked polyvinyl pyrrolidone (PVP-P); PVP-P(Crosslinked polymer)English alias: PVPP Physical properties: White or near-white powder, insoluble in water, ethanol, ether and other commonly used organic solvents.Use: Cross-linked polyvinylpyrrolidone (PVP-P) can form complexes with phenols and alkaloids to remove them from plant samples, thus preventing the modification and interference of proteins in order to determine protein content more accurately. It has also been reported that crosslinked polyethylpyrrolidone (PVP-P) can improve the activity of the enzymeCross-linked POvidone (PVPP), also known as insoluble polyvinylpyrrolidone, cross-linked polyvinylpyrrolidone, refers to the polymer water insoluble polymer obtained from n-vinyl2-pyrrolidone by cross-linking reaction. The appearance of crosslinked POvidone is white or white powder, no special odor, insoluble in water and various solvents. Crosslinked POvidone has the characteristics of good fluidity, easy processing and high water absorption, and has broad application prospects in…

Product properties:Yellowish solid resembling protein. Dissolves in water to form a colloidal solution,Soluble in ethanol, chloroform, almost insoluble in etherStorage conditions:Seal and store in a dry place away from light Usage scenario:Widely used as suspension agent, dispersant, emulsifier, binder, polymer surfactant and so on Pvp use (Useage) As a synthetic water-soluble polymer compound, PVP has the general properties of water-soluble polymer compounds, colloidal protection, film formation, adhesion, hygroscopic, solubilization or condensation, but its most distinctive, so people pay attention to its excellent solubility and physiological compatibility. In synthetic polymers such as PVP both soluble in water, but also soluble in most organic solvents, very low toxicity, good physiological compatibility is rare, especially in medicine, food, cosmetics, which are closely related to people’s health in the field, with the reduction of the price of its raw material butyrolactone, will show its good prospects for development. The following is a specific introduction…

DMSO Basic information: DMSO: dimethyl sulfoxide, is a colorless and odorless transparent liquid, with strong moisture absorption, high polarity, high boiling point, good thermal stability, and water miscible characteristics, it and most organic matter can be miscible, and has the title of “universal solvent”. Melting point: 18.4 °C; Boiling point: 189°C In organic synthesis, due to the good solubility of DMSO, we often use DMSO as a reaction solvent, but it is sometimes difficult to remove it due to its high boiling point during post-processing. 1, if the reactant is stable and resistant to high temperature, it is a good solution, with the oil pump, about 60 degrees, vacuum distillation can soon be removed; 2, if the reactants are not so stable, it is obviously not advisable to use oil pumps to pull. If the solubility of the reactants is not good, then slowly add a lot of water, the…

The application of PVP in binder PVP has special adhesion to glass, metal and plastic, paper, fabric surface; Coupled with its characteristics of hydrophilicity, dispersion stability, non-thixotropy, thickening, etc., it is widely used in various binder formulations. There are two types of applications. Class is to PVP as the main component of the adhesive, the other is to use the binding properties of PVP in other products that need binder components, such as coatings, inks, glazing agents, various tablets, granules, sintered materials glaze and so on. Application in adhesives As the main component of adhesives, PVP is the most widely used in industry, such as solid glue sticks, pressure sensitive adhesives and rewet adhesives. Solid glue stick is a new type of office (including school students) glue, because of its easy to use coating, strong initial adhesion, suitable for all kinds of paper, flat and wrinkly after bonding, to overcome…

With the development of pharmaceutical preparation technology, POvidone has been used more and more widely as pharmaceutical excipients of non-ionic water-soluble polymer compounds. However, different preparations need to be selected for different types of POvidone, and there are many technical details in its application that require the user’s special attention. According to the actual situation of first-line production, it is divided into…… from different angles as binder, coprecipitant, co-solvent, etc. According to the excellent physiological compatibility of POvidone series of pharmaceutical excipients is its inherent and unique product properties, to now, it has become the three main synthetic pharmaceutical excipients together with cellulose derivatives and acrylic compounds. Povidone series can be a variety of models according to different K values, of which the most widely used varieties are K15, K30 and K90. The Chinese Pharmacopoeia only lists the quality standard of K30, while the British and American pharmacopoeia lists all…