Polyvinylpyrrolidone
Molecular Structure:
MDL:
MFCD00149016
Molecular Formula:
(C6H9NO)n
Molecular Weight:
Alias:
PVP-P(交聯(lián)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 |
現(xiàn)貨 |
| Polyvinylpyrrolidone |
|
100g |
RMB 742.5 |
現(xiàn)貨 |
| Polyvinylpyrrolidone |
USP級,cross-linked, 粉末 |
100g |
RMB 214.5 |
Consulting service |
| Polyvinylpyrrolidone |
USP級,cross-linked, 粉末 |
500g |
RMB 761.2 |
Consulting service |
| Polyvinylpyrrolidone |
USP級 |
1Kg |
RMB 1422.3 |
Consulting service |
Character:
白色或近白色,具有吸濕性易流動(dòng)的粉末,無臭或微臭,不溶于水、堿、酸及常用有機(jī)溶劑,具有很強(qiáng)的溶脹性能和與多類物質(zhì)的絡(luò)合能力。
熔點(diǎn): 300 °C
Quality Standard:
項(xiàng)目 USP級
(USP28)
外觀Appearance 白色至類白色微結(jié)晶粉末
紅外光譜鑒別Infrared spectrometry 和對照品匹配
PH值(1%水溶液)(1% aq. soln.) 5.0-8.0
殘單 <0.1%
水含量Water,% <5 % (K.F.)
硫酸鹽灰分Sulfated ash <0.1 %
重金屬Heavy metals <10 ppm
氮含量(nitrogen) 11.0-12.8%
過氧化物Peroxides <400 ppm
干燥損失Loss on drying <5 %
砷As < 2 ppm
Storage:
交聯(lián)聚乙烯基吡咯烷酮(PVP-P)能和酚、生物堿形成復(fù)合物,從而從植物樣品中把他們?nèi)コ@樣就阻止了對蛋白的修飾和和干涉,以便更準(zhǔn)確地測定蛋白質(zhì)的含量。也有報(bào)道交聯(lián)聚乙烯基吡咯烷酮(PVP-P)能提高酶的活力。
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