Polyvinylpyrrolidone
        
        Molecular Structure:
 
        MDL:
MFCD00149016
        Molecular Formula:
	(C6H9NO)n
        Molecular Weight:
        Alias:
	PVP-P(交联聚合物),PVPP 聚乙烯聚吡咯烷酮
Polyvinylpolypyrrolidone
Poly(vinylpolypyrrolidone)
PVPP
        Product order:
        
          
            | Name | Specifications | Packing | Price | Delivery | 
          
            | Polyvinylpyrrolidone |  | 50g | RMB 396 | 现货 | 
          
            | Polyvinylpyrrolidone |  | 100g | RMB 742.5 | 现货 | 
          
            | Polyvinylpyrrolidone | USP级,cross-linked, 粉末 | 100g | RMB 214.5 | Consulting service | 
          
            | Polyvinylpyrrolidone | USP级,cross-linked, 粉末 | 500g | RMB 761.2 | Consulting service | 
          
            | Polyvinylpyrrolidone | USP级 | 1Kg | RMB 1422.3 | Consulting service | 
        
         
        Character:
	白色或近白色,具有吸湿性易流动的粉末,无臭或微臭,不溶于水、碱、酸及常用有机溶剂,具有很强的溶胀性能和与多类物质的络合能力。
熔点:  300 °C
        Quality Standard:
	项目                                     USP级    
                                        (USP28)
外观Appearance                          白色至类白色微结晶粉末
红外光谱鉴别Infrared spectrometry       和对照品匹配  
PH值(1%水溶液)(1% aq. soln.)            5.0-8.0
残单                                    <0.1%
水含量Water,%                           <5 % (K.F.)
硫酸盐灰分Sulfated ash                  <0.1 %
重金属Heavy metals                      <10 ppm
氮含量(nitrogen)                        11.0-12.8%
过氧化物Peroxides                       <400 ppm
干燥损失Loss on drying                  <5 %
砷As                                    < 2 ppm
        Storage:
	交联聚乙烯基吡咯烷酮(PVP-P)能和酚、生物碱形成复合物,从而从植物样品中把他们去除,这样就阻止了对蛋白的修饰和和干涉,以便更准确地测定蛋白质的含量。也有报道交联聚乙烯基吡咯烷酮(PVP-P)能提高酶的活力。
		
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