Complaint
Polyvinylpyrrolidone is abbreviated as PVP, and is the polymer of vinylpyrrolidone. According to the different degree of polymerization, it is further classified into soluble PVP and insoluble PVPP (polyvinyl polypyrrolidone). Molecular weight of the soluble PVP is 8,000 to 10,000.The soluble PVP can be used as a precipitating agent which can be settle down through its action with polyphenols. Using this method, it is easily to have residual PVP in the alcohol. Due to the savings effect of PVP inside the human body, the World Health Organization doesn't recommend to apply this substance. In recent years, the use of soluble PVP has been rare. Insoluble PVPP system had began to be used in the beer industry since the early 1960s. It has a relative molecule weight greater than the relative mass greater than 700,000. It is a insoluble polymer derived from the further cross-linking and polymerization of PVP and can be used as an adsorbent of polyphenols with a good efficacy.
Packing and storage:
In 25kg, 50kg, 1000kg net bags, store at a cool, dry and well ventilated place.
| Product Name | 2-Dimethylaminoethyl chloride hydrochloride |
| CAS | 4584-46-7 |
| Purity | 99% |
| Item | K15 | K17 | K25 | K30 | K90 |
| K value | 13-17 | 15-19 | 23-27 | 27-33 | 88-98 |
| N-Vinylpyrrolidone | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 |
| Moisture % max | 5.0 | 5.0 | 5.0 | 5.0 | 5.0 |
| PH value (5% in water) | 3.0-5.0 | 3.0-5.0 | 3.0-5.0 | 3.0-5.0 | 4.0-7.0 |
| Residue on ignition % max | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 |
| Nitrogen content % | 11.5-12.8 | 11.5-12.8 | 11.5-12.8 | 11.5-12.8 | 11.5-12.8 |
| Item | K15 | K17 | K25 | K30 | K90 | |
| K value | 13-17 | 15-19 | 23-27 | 27-33 | 88-98 | |
| (CP/USP) | 0.1% max | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 |
| (USP/EP/BP) ppm max | 10 | 10 | 10 | 10 | 10 | |
| Moisture % | 5.0 | 5.0 | 5.0 | 5.0 | 5.0 | |
| Solid content % min. | 95 | 95 | 95 | 95 | 95 | |
| PH value (5% in water) | 3.0-5.0 | 3.0-5.0 | 3.0-5.0 | 3.0-5.0 | 4.0-7.0 | |
| Residue on ignition % | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | |
| Nitrogen content % | 11.5-12.8 | 11.5-12.8 | 11.5-12.8 | 11.5-12.8 | 11.5-12.8 | |
| 2-Pyrroli done (impurity B)% max | 3.0 | 3.0 | 3.0 | 3.0 | 3.0 | |
| Acetalde hyde (as acetalde hyde) ppm max | 500 | 500 | 500 | 500 | 500 | |
| Heavy metal (as Pb) ppm max | 10 | 10 | 10 | 10 | 10 | |
| Hydrazine ppm max | 1 | 1 | 1 | 1 | 1 | |
| Peroxide (As H2 O2) ppm max | 400 | 400 | 400 | 400 | 400 | |
Polyvinyl pyrrolidone / Povidone / PVP-K
Product Name: PVP-K
Synonyms: Polyvinyl pyrrolidone, Povidone
CAS No.: 9003-39-8
Molecular Formula: (C6H9NO)n
Povidone is a hygroscopic polymer ,supplied in white or creamy white powder or flakes,ranging from low to high viscosity & low to high molecular weight,which characterized by K Value.It's easily soluble in water and many other organic solvents,with excellent hygroscopisty,film-forming,adhesive,chemical stability and toxicological safeness characters.
Applications:
In Pharmaceutical Industry
PVP-K possess excellent adhesive,film-forming,dispersing and thickening properties,and are widely used in the pharmaceutical industry.
Low molecular weight PVP-K, often used as a solubilizing agent, crystallization inhibitor and suspension stabilizer in injection and ophthalmic formulations such as PVP K12,K15,K17.
Medium Molecular PVP-K, often used as binder in tablets,capsules and granules, as a stabilizer for oral suspensions,film-forming agent,solubilizing agent, dispersant for pigments, as an enzyme stabilizer and to improve bioavailability such as PVP K25,K30.
High molecular PVP-K, as highly effective binder, often used as stabilizer in oral and topical suspension, as a thickener, hydropylizing agent such as PVP K90.
In Cosmetic Industry
PVP-K are used widely in a wide range in hair care, skin care & oral care products.The products are particularly suitable for formulations where viscosity modification and film forming properties are required. PVP-K products are particularly suited to hair styling products. The medium molecular weights such as PVP K30 are preferred where viscosity is critical in applications, for example, spray. The higher molecular weight products such as PVP K90 are the best choice where high viscosity are required in applications. PVP-K is widely used in cosmetics as followings
*Hair Gels
*Hair mousses
*Liquid hair setting preparations
*Pump Sprays
Other Industrial Application
*Suspensant, disperser and emulsifier
*Glass fiber
*Detergent
*Plastics and resin
*Ink
*Paint and coating
*Textile dying and printing
*Film
*Adhesive
*TV tube
| Item | Standard | Result |
| K value | 27-32 | 29.5 |
| Content% | ≥95 | 96.4 |
| Moisture% | ≤5.0 | 3.6 |
| PH Value(5% in water) | 3.0-7.0 | 3.7 |
| NVP% | ≤0.1 | 0.02 |
| Residue on ignition% | ≤0.1 | 0.06 |
| Nitrogen% | 11.5-12.8 | 12.1 |
| Aldehydes(as ace taldehyde)% | ≤0.05 | <0.05 |
| Heavy metals(as Pb) ppm | ≤10 | <10 |
| Hydrazine ppm | ≤1.0 | <1.0 |
| Peroxides ppm | ≤400 | <400 |
| Appearance | White or yellowish-white hygroscopic | White powder |
| Solubility | Freely soluble in water, in ethanol(96 percent) and in me thanol very slightly soluble in ace tone | Conform |
| Identification | A. An orange-yellow precipitate is formed. | Conform |
| B.An pale blue precipitate is formed. | Conform |
