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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