聚乙烯硫酸钾PVSK(wako现货)
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备注:本公司销售的所有产品仅用于生化科研试验
聚乙烯硫酸钾,日本wako原装,500ml,大量现货
聚乙烯硫酸钾(原装)是WAKO产品之一,生化实验用。
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,Glycol Chitosan(GC)或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*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Glycol Chitosan 或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。
WAKO(和光纯药)是世界五大实验室化学试剂供应商之一,其2003年全公司销售额为475亿美圆,也是世界实验室试剂zui全的公司之一,长期以来其一直以高品质的试剂而*。您若需要日本Wako更详细的产品介绍,请访问网 站:Search.wako-chem.com。
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Potassium Polyvinyl Sulfate Titration Solution (N/400)
Wako
Cat. No. 164-21655Grade: for Colloidal Titration
Storage condition: Keep at RT.
Manufacturer: Wako
Summary
The only normal solution for anion colloidal titration. It is used for the quantitative determination of cation high-molecular compounds by direct titration and for the quantitative determination of agar, mucin and high-molecular flocculants through combined use of glycol chitosan solution, which is a cation colloidal titration solution.
Appearance: Colorless - slightly yellowish brown, clear liquid
Synonym N/400 P.V.S.-K
Potassium Polyvinyl Sulfate
Polyvinylsulfuric acid potassium salt
Poly Vinyl Sulfate, Potassium Salt
Potassium Poly(vinylsulfate)
Sulfuric acid, monovinyl ester, polymers, potassium salt
Polyvinyl sulfate potassium salt
Potassium poly(vinyl sulfate)
PVSK
Sulfuric acid, monoethenyl ester, homopolymer, potassium salt
CAS NO. 26837-42-3
Molecular Weight (162.21)n
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Potassium Polyvinyl Sulfate
Wako
Grade: for Colloidal Titration
Storage condition: Keep at 2-10 degrees C.
Manufacturer: Wako
Summary
This product is for research use only. Do not administer it to human.
Colloidal titration is widely used for polyelectrolyte determination.
Positive colloid solution can be titrated with potassium polyvinyl sulfate,
and negative colloid solution can be titrated with glycol chitosan, methyl
glycol chitosan, or polydiallyldimethyl ammonium chloride.
Synonym
Potassium Polyvinyl Sulfate
Polyvinylsulfuric acid potassium salt
Poly Vinyl Sulfate, Potassium Salt
Potassium Poly(vinylsulfate)
Sulfuric acid, monovinyl ester, polymers, potassium salt
Polyvinyl sulfate potassium salt
Potassium poly(vinyl sulfate)
PVSK
Sulfuric acid, monoethenyl ester, homopolymer, potassium salt
Molecular Formula: C2H3O4SK
Appearance: White ~ pale brown, crystalline powder ~ powder or small mass
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