订购电话:4001650900

Poly(vinyl alcohol)

Molecular Structure:
MDL:
MFCD00081922
Molecular Formula:
[-CH2CHOH-]n
Molecular Weight:
Alias:
Vinyl alcohol - polymerised
Product order:
Name Specifications Packing Price Delivery
Poly(vinyl alcohol) 500g RMB 86.9 促销
Poly(vinyl alcohol) 500g RMB 96.8 现货
Poly(vinyl alcohol) 500g RMB 96.8
Poly(vinyl alcohol) 500g RMB 78.1 促销
Poly(vinyl alcohol) 500g RMB 96.8
Poly(vinyl alcohol) 醇解度:87.0~89%(mol/mol) 500g RMB 96.8 现货
Character:
干燥无塑性的聚乙烯醇为白色到奶色粉末或粒状。在200℃时软化而分解。商品因存在各种乙酰基残留物,故不同的粘度和特性。能溶于水,不溶于石油溶剂。
Quality Standard:
聚乙烯醇1788型(average M.W. 88000 ):

外观Appearance                         微黄色至乳白色粉末
醇解度degree of hydrolysis,%(mol/mol)  87.0~89.0 
粘度Viscosity,mPa·s                   20.5~24.5(4% 水溶液, 20°C)
乙酸钠Sodium acetate ,%                ≤ 1.0
挥发分Volatile matter ,%               ≤ 5.0
灰分Ash,%                              ≤ 0.4
PH值                                   5~7


聚乙烯醇1788低粘度型(average M.W. 22000 ):

外观Appearance                         类白色至微黄色粉末
醇解度degree of hydrolysis,%(mol/mol)  87.0~89.0
粘度Viscosity,mPa·s                   4.6-5.4(4% 水溶液, 20°C)
挥发分Volatile matter ,%               ≤ 5.0
灰分Ash,%                              ≤ 0.4
PH值                                   5~7


聚乙烯醇1799型:

外观Appearance                         白色至微黄色颗粒或颗粒粉末
醇解度degree of hydrolysis,%(mol/mol)  98~99
粘度Viscosity,mPa·s                   22.0~28.0(4% 水溶液, 20°C)
乙酸钠Sodium acetate ,%                ≤ 1.0
挥发分Volatile matter ,%               ≤ 8.0
灰分Ash,%                              ≤ 0.7


聚乙烯醇1797型:

外观Appearance                         白色至微黄色颗粒、结晶或粉末
醇解度degree of hydrolysis,%(mol/mol)  96.0~98.0
粘度Viscosity,mPa·s                   23.0~29.0(4% 水溶液, 20°C)
乙酸钠Sodium acetate ,%                ≤ 1.5
挥发分Volatile matter ,%               ≤ 7.0
灰分Ash,%                              ≤ 0.7
PH值                                   5~7

Storage:
密封保存。
用途  接合剂及成层剂,织物,纸张上浆剂,增厚剂和稳定剂,乳化剂。
Related Products
上海紫一试剂厂   © 2024 All Rights Reserved      备案号:沪ICP备19037119号-1     
网站地图:
试剂CAS试剂分类试剂产品实验仪器耗材分类实验仪器耗材新闻资讯
   沪公网安备 31012002003055号