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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 促銷(xiāo)
Poly(vinyl alcohol) 500g RMB 96.8 現(xiàn)貨
Poly(vinyl alcohol) 500g RMB 96.8
Poly(vinyl alcohol) 500g RMB 78.1 促銷(xiāo)
Poly(vinyl alcohol) 500g RMB 96.8
Poly(vinyl alcohol) 醇解度:87.0~89%(mol/mol) 500g RMB 96.8 現(xiàn)貨
Character:
干燥無(wú)塑性的聚乙烯醇為白色到奶色粉末或粒狀。在200℃時(shí)軟化而分解。商品因存在各種乙?;鶜埩粑铮什煌恼扯群吞匦?。能溶于水,不溶于石油溶劑。
Quality Standard:
聚乙烯醇1788型(average M.W. 88000 ):

外觀Appearance                         微黃色至乳白色粉末
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)
乙酸鈉Sodium acetate ,%                ≤ 1.0
揮發(fā)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 ):

外觀Appearance                         類(lèi)白色至微黃色粉末
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)
揮發(fā)分Volatile matter ,%               ≤ 5.0
灰分Ash,%                              ≤ 0.4
PH值                                   5~7


聚乙烯醇1799型:

外觀Appearance                         白色至微黃色顆粒或顆粒粉末
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)
乙酸鈉Sodium acetate ,%                ≤ 1.0
揮發(fā)分Volatile matter ,%               ≤ 8.0
灰分Ash,%                              ≤ 0.7


聚乙烯醇1797型:

外觀Appearance                         白色至微黃色顆粒、結(jié)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)
乙酸鈉Sodium acetate ,%                ≤ 1.5
揮發(fā)分Volatile matter ,%               ≤ 7.0
灰分Ash,%                              ≤ 0.7
PH值                                   5~7

Storage:
密封保存。
用途  接合劑及成層劑,織物,紙張上漿劑,增厚劑和穩(wěn)定劑,乳化劑。
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