Insoluble Pvp

pvp povidone iodine polyvinylpyrrolidone Top producer of PVP (polyvinylpyrrolidone) related materials in china with full items as: PVP K series:PVP K12,PVP K17,PVP K25,PVP K30,PVP K60,PVP K90,PVP K115. PVP/VA Copolyvidone·¼Vinylpyrrolidone /Vinylacetate Copolymer: PVP VA64W PVP VA64E PVP VA64I PVP VA73W PVP VA73E PVP VA73I PVP VA55E PVP VA55I PVP VA37E PVP VA37I PVP VA28E PVP VA28I PVPP(Crospovidone)Insoluble polyvinylpyrrolidone Povidone Iodine (complex of povidone and Iodine) GSP Glue stick adhesive PVP-S2 Anti-redeposition agent 2-PYRROLIDONE 25kgs fibre drum. IBC of 1000kgs

Carbomer 940 is white and loose; it is acidic, hygroscopic and slightly smelly. It is soluble in water, ethanol, and glycerin. The usual concentration is 0.1% - 3.0%. Carbomer 940 contains a large number of carboxyl groups in its molecule, so the aqueous solution should be used after neutralization with alkali to reduce the irritation to the skin and mucous membranes. The neutralizer of Carbo 940 can be sodium hydroxide, potassium hydroxide, potassium bicarbonate, borax, amino acids, polar organic amines such as triethanolamine. Laurylamine and stearylamine can be used as neutralizers in non-polar systems. The neutralized carbomer hydrogel is the most viscous between pH 6-11, such as pH12, the viscosity will decrease, and the presence of strong electrolytes can also reduce the viscosity. The gel is unstable, and it is easy to grow mold and lose viscosity when exposed to the sun. Adding antioxidants can slow down the reaction. How to use Kabo 940 (acrylic resin) and matters needing attention: 1.pH value: The optimum pH value range of Carbo 940 system is 4-10, higher or lower than this range will lead to changes in system viscosity. 2.Components that are not easily compatible in the formula: protein, PVP resin, polyethylene glycol (PEG), polyethoxylated surfactant will interact with unneutralized Carbo 940, so it needs to be partially neutralized before adding Capo 940. Desheng professionally provides cosmetic raw materials and technical formula support such as Carbo 940. 3.Salt and soluble cations: Carbo 940 is sensitive to salts and cations. When the concentration of soluble ions in the component exceeds 0.1%, the dosage of the component should be controlled. If possible, use acidic, neutral or alkaline materials as the matrix of the main drug, use deionized water, add salt after neutralization to grasp the degree of salt's influence on the system, high-valent ions (Ca, Mg, Fe, AI) will Serious damage to the system should be eliminated. Self-converted pollutants (such as Fe, Cu, etc.) will gradually reduce the viscosity of the system and cause the system to become unstable. Preparation of products in stainless steel or non-metal equipment will avoid this situation. In addition, adding EDTA to chelate metal ions can also achieve good results. In addition to the above two aspects, a suitable model of Carbo 940 (such as Carbo 9401342GE resin) can also be used, which has low sensitivity to soluble salts. 4. Insoluble matter: When insoluble components are present, it is difficult for the Carbomer 940 system to present a clear and transparent gel.

USP: Povidone-Iodine EP: PovidonumIodinated INCI/CTFA: PVP-Iodine Description: Reddish-brown powder, soluble in water and ethanol, insoluble in diethyl ether and chloroform. Stable, no stimulation, to virus, fungi, bacteria, mould and spores, have a strong killing effect. Our qualifications are complete, with many international certificates. Good service, you can always keep in touch. With rich experience, our products are exported to more than 100 countries and regions.