Poly(vinyl sulfate) potassium salt
Molecular Structure:
MDL:
--MFCD00081923
Molecular Formula:
C2nH3nKnSnO4n;[CH2CH(OSO3K)]n
Molecular Weight:
Alias:
聚乙烯硫酸钾(PVSK
Product order:
Name |
Specifications |
Packing |
Price |
Delivery |
Poly(vinyl sulfate) potassium salt |
平均分子量 Mw ~170,000 |
5g |
RMB 4378 |
Consulting service |
Poly(vinyl sulfate) potassium salt |
平均分子量 Mw ~170,000 |
1g |
RMB 1188 |
Consulting service |
Character:
pvsk胶体滴定(colloid titration) 是一种简单、快速、准确的测定高分子聚合物电荷的方法。Potassium Polyvinyl Sulfate(聚乙烯硫酸钾,PVSK)于水中可形成带负电的胶体颗粒,Methyl Glycol Chitosan(MGC)在酸性水溶液中带正电,利用电性中和的原理,负电胶体颗粒的会与正电胶体颗粒反应达到电性中和。在适当的pH条件下,此两种胶体可完全反应形成不溶性沉淀物。使用甲苯胺蓝(Toluidine Blue,TB)为指示剂,与正电性胶体混合时,两者之间没有反应,TB维持蓝色;当悬浮液中胶体带负电时,TB会吸附于胶体表面而现紫色。
滴定时,正电胶体可直接以PVSK溶液为滴定液,TB为指示剂进行滴定;对于负电荷胶体,可以直接以MGC滴定,或加入已知的过量的正电胶体,再以PVSK溶液对剩余的正电胶体进行反滴定。胶体滴定试剂——聚乙烯硫酸钾(PVSK) 和乙二醇壳聚糖(GC),甲基乙二醇壳聚糖(MGC)
Quality Standard:
平均分子量 Mw ~170,000
Storage:
用途 胶体滴定试剂。
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