Shanghai Yearn Chemical pvp Product introduction
Shanghai Yearn Chemical Company introduction
Shanghai Yearn Chemical Science-Tech Co., Ltd is a leading PVP and PVPP supplier from China, with more than 15 yearn experience in brewing fining agent industry, we have supplied our products to Europe, Brazil, USA, and Southeast Asia, as well as some local beer brewing factories around Zhejiang Province. We got great reputation among our customers.
With food certification and professional equipment, our total capacity reaches to 6000tons/year in this year, including PVP, PVPP, and PVP/PVI.
With the increasing of capacity, we are exploring the market in wine, beer, and beverage. We are excited to introduce our product, PVPP & PVP/PVI which can be used as a fining agent and stabilizer in beer brewing, wine, and beverage, hope to start long-term and solid collaboration.
Yearn Chemicals China, we create value for you.
Shanghai Yearn Chemical PVPP Product introduction
Chemical Name: Crospovidone/Polyvinylpyrrolidone cross-linked/交联聚乙烯吡咯烷酮。
MF：C6H9NO
CAS：25249-54-1
| ITEMS/检测项目 | Parameters/标准参数 | Result/测试结果 |
| Appearance
外观 | 白色或乳白色粉末
White or yellowish-white powder | Conformed |
| Moisture
水分 | 5% Max
≤ 5.0% | 2.9 |
| Solubility
溶解性 | Practically insoluble in water
几乎不溶于水 | conformed |
| Water-soluble Matter
可溶物质 | 0.5% Max
≤ 0.5% | 0.3% |
| Free-N-vinyl Pyrrolidone
游离-N-乙烯基吡咯烷酮 | 10ppm Max
≤ 10 ppm | 0.9 ppm |
| N,N-divinyl-imidazolidinone
N,N-二乙烯基咪唑烷酮 | 2ppm Max
≤ 2 ppm | 0.4 ppm |
| Absorption rate
吸附率 | 55% Min
≥55% | 63% |
| PH in 1% Water
pH值，1%水溶液 | 5.0-8.0 | 6.0 |
| Loss on drying
干燥比 | 5.0% Max
≤ 5.0% | 3.2% |
| Nitrogen content
氮含量 | 11.0-12.8 | 12.3 |
| Peroxide (as)H2O2
过氧化物 | 400ppm Max
≤ 400 ppm | 37ppm |
| Residue on ignition
炽灼残渣 | 0.4% Max
≤ 0.4% | 0.02% |
| Acid/Ethanol soluble substance
酸/醇可溶物 | 1% Max
≤ 1% | 0.2% |
| 重金属，以铅计
Heavy metals (pb) | 10ppm
≤ 10ppm | conformed |
Shanghai Yearn Chemical PVP/PVI Product introduction
Chemical Name:
copolymer of N-vinylimidazole (CAS no.1072-63-5)and N-vinyl-2-pyrrolidone (CAS no. 88-12-0)
CAS：87865-40-5
| ITEMS/检测项目 | Parameters/标准参数 | Result/测试结果 |
| Appearance
外观形状 | White or cream white powder
白色或者乳白色粉末 | Conformed
符合 |
| Loss on drying
干燥失重 | 5.0% Max
≤5.0% | 3.8 |
| Ash
炽灼残渣 | 0.02% Max
≤0.02% | 0.015 |
| Solubility in water
水溶物 | 0.5% Max
≤0.5% | 0.2 |
| Heavy metals
重金属 | 10 ppm Max
≤10 ppm | Conformed
符合 |
| As
砷 | 2 ppm Max
≤2 ppm | Conformed
符合 |
| Vinylpyrrolidone
乙烯基吡咯烷酮 | 5 ppm Max
≤5 ppm | 3.2 |
| Vinylimidazole
N-乙烯咪唑 | 10 ppm Max
≤10 ppm | 5 |
| Nitrogen
氮含量 | 26.0-29.0 | 27.8 |
| Total number of colonies CFU/g
总菌落数 | 100 Max
≤100 | Conformed
符合 |
| Mold and yeast count CFU/g
霉菌和酵母菌数 | 100 Max
≤100 | Conformed
符合 |
| Staphylococcus aureus CFU/g
金黄色葡萄球菌 | 0 | 0 |
| Salmonella CFU/c
沙门氏菌 | 0 | 0 |
| Pseudomonas CFU/g
绿脓杆菌 | 0 | 0 |
| E. Coli CFU/c
大肠杆菌 | 0 | 0 |
Application for PVP and PVP/PVI:
PVPP is a polymerized and water/beer insoluble version of the soluble compound PVP (polyvinylpyrrolidone). It has an even higher affinity for chemical bonding with polyphenols than the proteins present in beer have. This gives PVPP excellent properties as a chemical stabilizer for beer. If finely granulated, high surface area PVPP is dispersed in beer, a very high proportion of the dissolved polyphenols in the beer will bind to the PVPP particles, subsequently to be filtered out. Brewers wish to remove these polyphenols because they will otherwise with time react with beer proteins, forming insoluble complexes that will make the beer hazy. This type of stabilizer is referred to as an adsorbent.
Adsorbent copolymers of PVP/PVI can be added to must or wine in order to prevent the defects caused by excessive metal contents or to
reduce undesirably high metal concentrations.
Packing: 25kg/fiber drum。
Storage: Sealed and stored in a dry, ventilated and cool warehouse。
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