Polyvinylpyrrolidone (PVP) is a kind of synthetic polymer material with many unique properties and uses. In this paper, the application fields and properties of polyvinylpyrrolidone will be introduced in detail. The application of polyvinylpyrrolidone in the pharmaceutical industry has excellent solubility, biocompatibility and chemical stability, so it has a wide range of applications in the pharmaceutical field. It can be used as pharmaceutical excipients, drug carriers, sustained-release agents, drug synthesis intermediates and so on. 1. Medicinal excipients polyethylene pyrrolidone can be used as medicinal excipients to improve the taste, efficacy and stability of drugs. For example, when making oral liquids or tablets, polyvinylpyrrolidone can be used as a binder, thickener and stabilizer to increase the stability and potency of the drug. 2. Drug carrier Polyethylpyrrolidone can be used as a drug carrier to wrap the drug in its molecular structure and achieve slow release of the drug. This drug carrier…

First, what is polyethylene pyrrolidone?Polyvinylpyrrolidone is a water-soluble polymer with excellent chemical stability. It can combine with the moisture in the skin to form a protective film that increases the moisture content of the skin, thereby improving the phenomenon of insufficient moisture in the skin. At the same time, polyvinylpyrrolidone can also strengthen the moisturizing function of the skin, making the skin softer and more elastic. Second, the role of polyethylene pyrrolidone1. Moisturizing effect Polyethylpyrrolidone has a good moisturizing function, can form a protective film, so that the skin is not easy to lose water. Moreover, it can lock the moisture on the surface of the skin into the skin, so that the moisture content of the skin is effectively increased. 2. Antioxidant benefits Polyethylpyrrolidone has a good antioxidant effect, which can neutralize free radicals and prevent skin aging. Among them, free radicals are one of the main causes of…

What is pvpp?PVPP is crosslinked polyvinylpyrrolidone, also known as crosslinked POvidone. It is white or nearly white, with hygroscopic and easy to flow powder, odorless or slightly odorless, insoluble in water, alkali, acid and common organic solvents, with strong expansion performance and complex ability with many kinds of substances. Due to the high molecular weight and cross-linked structure of PVPP, it is insoluble in water but can quickly introduce water when it meets water, prompting its network structure to expand and produce disintegration, so PVPP is a widely used tablet disintegrator in medicine. And because the molecule has amide bond and adsorbed the hydroxyl group on the polyphenol molecule to form hydrogen bond, it can adsorb polyphenols and improve the abiotic stability of the wine body. Therefore, it can be used as a stabilizer for beer, fruit wine and beverage wine, extending its shelf life up to 300 days, and…

Polyvinylpyrrolidone, or PVP, is a non-ionic polymer that is the most distinctive, best-studied and widely studied fine chemical among N-vinylamide polymers. Has developed into non-ionic, cationic, anionic 3 categories, relative molecular weight from thousands to more than one million homopolymer, copolymer and crosslinked polymer series products, and with its excellent unique properties have been widely used. Polyvinylpyrrolidone, as a polymer surfactant, can be used as dispersant, emulsifier, thickener, leveling agent, particle size regulator, anti-reprecipitating agent, coagulant, co-solvent and detergent in different dispersion systems. Application: Polyvinylpyrrolidone can combine with phenols and alkaloids to form a complex to remove phenols and alkaloids from plant samples, which can prevent these substances from modifying proteins and interfering with spectrophotometry to measure protein content; Increased enzyme stability. PVP is widely used as an excipient in pharmaceutical preparations. Main use Membranes, adhesives, ceramics, inks, printing, fibers, textiles, personal care, semiconductors for batteries, dialysis and water treatment…

English name：PolyvinylpyrrolidoneEnglish alias：K-30;Povidone;Pop;Polyvinylpyrrolidone K 25;Polyvinylpyrrolidone K 30;Polyvinylpyrrolidone K 90;Polyvinylpyrrolidone K 60;Polyvinylpyrrolidone-Divergan RSMolecular weight：MW:58000 PVP K-30 meidical grade ANALYSIS   ITEMS STANDARD ANALYSIS  RESULTS 外观/Appearance White Powder Complies 鉴别/Identification Positive Positive K值/K Value 27.0-32.0 30.2 水份/Moisture                         ≤% 5 3.7 PH值（5%水溶液）/PH of  5% aqueous solution 3.0-7.0 3.5 灼烧残渣/Residue on Ignition            ≤% 0.1 0.02 N-乙烯基吡咯烷酮/N-Vinylpyrrolidone    ≤% 0.1 0.01 醛/Aldehyde                          ≤% 0.05 0.01 重金属/Heavy Metal(As Lead)           ≤ppm 10 ＜10 过氧化物/Peroxide                    ≤ppm 400  ＜400 氮/Nitrogen                            % 11.5-12.8 12.02 MFT. Date: Apr. 02, 2020 EXP. Date: Apr. 01, 2022 Nature of PVPpolyvinyl pyrrolidone (PVP), a non-ionic polymer, is the most distinctive and widely studied fine chemical variety among N-vinyl amide polymers. At present, it has developed into non-ionic, cationic, anion 3 categories, industrial grade, pharmaceutical grade, food grade 3 specifications, relative molecular mass from thousands to more than one million homopolymer, copolymer and crosslinked polymer series products, and with its excellent unique properties have been widely used.PVP is divided into four stages according to its average molecular weight size,…

What is PVI/PVPPVI/PVP is a polyvinylimidazole and polyvinylpyrrolidone adsorbent cross-linked copolymer. The polymer is insoluble and slightly hygroscopic. It has a number of functional imidazole groups which connect selectively and scavenge various metals removing it from wine. P U T T I NG P V I / P V P T O T HE T ES TA recent trial at The Australian Wine Research Institute (AWRI) assessed the impact of two commercially available PVI/PVP co-polymer products on the metal concentration of 38 commercially available white and red wines.M A T ER I A LS A N D M ET HO DSTwo commercial cross-linked polymers provided by Enartis were tested.• Stabyl MET (0.35 g/L)o Co-polymer of PVI/PVP and amorphous silica.• Claril HM (0.53 g/L)o Co-polymer of PVI/PVP and pre-activated chitosan (chitosan can aid the removal of heavy metals from wine and is also used as a stabilisation and clarification agent).For each…

PVP is widely used as disintegrators, adhesives, and also used in desalination membranes and dialysis membranes of artificial kidney. In the food and beverage industry, adding insoluble cross-linked PVP to beer and tea drinks can remove polyphenols and excessive tannins in beer and tea drinks without remaining in them, which plays a role in stabilizing color, ensuring the flavor of beer and tea drinks remains unchanged for a long time and removing astringency, and is an excellent beverage clarifying agent and stabilizing agent. It is widely used in daily chemical industry, especially in cosmetics, such as PVP used in hair spray, which has excellent hair fixation. Add luster and moisturizing function. And does not absorb dust; In the coating industry, the use of PVP excellent film formation, using PVP as a coating agent to produce paint, film transparent without affecting the color, low molecular weight PVP can make ink. The…

It is a non-ionic polymer with the characteristics of N-vinylamide polymer and is one of the most widely studied fine chemical varieties. At present, it has developed into non-ionic, cationic, anion 3 categories, industrial grade, pharmaceutical grade, food grade 3 specifications, relative molecular weight from thousands to more than one million homopolymer, copolymer and crosslinked polymer series products, and with its excellent unique properties have been widely used. fractionationPVP is divided into four stages according to its average molecular weight size, usually represented by the K value, different K values represent the corresponding average molecular weight range of PVP. The K value is actually an eigenvalue related to the relative viscosity of PVP aqueous solution, and the viscosity is a physical quantity related to the molecular weight of the polymer, so the average molecular weight of PVP can be characterized by the K value. Generally speaking, the greater the K…

Povidone K30 Pyrrolidone and acetylene were pressurized to form vinylpyrrolidone monomer. The 1-vinyl-2-pyrrolidone homopolymer was obtained by catalyst polymerization with an average molecular weight of 3.8×104. The molecular formula is (C6H9NO) n, where n represents the average number of 1-vinyl-2-pyrrolidone chains. According to the anhydrous matter, the nitrogen (N) content should be 11.5% ~ 12.8%.   【 Properties 】 This product is white to milky white powder; No odor or slightly extra odor.   This product is easily soluble in water, methanol or ethanol, very slightly soluble in acetone, insoluble in ether.   [Identification] (1) Take 2ml aqueous solution of this product (l→50), add 2ml of lmol/L hydrochloric acid solution and a few drops of potassium dichromate test solution to generate orange-yellow precipitate.   (2) Take 3ml aqueous solution of this product (l→50), add about 15mg cobalt nitrate and about 75mg ammonium thiocyanate, stir, drop dilute hydrochloric acid to make…

Dimethyl sulfoxide (DMSO) is a dipolar aprotic solvent widely used in chemical industry and academic research. It is inherently less toxic and can be oxidized to dimethyl sulfone or reduced to dimethyl sulfide in the human body and is metabolized and excreted in urine and feces. However, in some cases, DMSO poses a safety risk, may explode or cause damage to the human body, and special attention should be paid to assessment in the following cases:Thermal decomposition of pure DMSO: Pure DMSO is stable at room temperature, but it will decompose at high temperatures and may explode. Differential scanning calorimetry (DSC) evaluation showed that the decomposition of pure DMSO was detected at about 278°C when tested in a nitrogen atmosphere. Accelerated calorimetry (ARC) shows that thermal decomposition can occur near the boiling point of 189°C. ​Acidic conditions: The presence of acidic substances will cause DMSO to decompose at lower temperatures,…