- Contact Person : Ms. Wu Joanna
- Company Name : Hunan Centrewell Trading Co., Ltd.
- Tel : 86-731-88917527
- Fax : 86-731-88913673
- Address : Hunan,changsha,North 6/F, No. MO, Huoju Park, Hi-Tech Industrial Development Zone
- Country/Region : China
- Zip : 410000
Good Quality PVA (Polyvinyl alcohol)
1.Fully Hydrolyzed Grade
Item Grade | Degree of alcoholysis (mol/mol) %≥ | Viscosity mpa.s | Sodium acetate %≤ | Volatile matter %≤ | Ash %≤ | PH value |
PVA1599 | 99.0-100 | 16.0-22.0 | 2.5 | 8.0 | 1.5 | 5-7 |
PVA1799L | 99.0-100 | 21.0-27.9 | 2.5 | 8.0 | 1.5 | 5-7 |
PVA1799H | 99.0-100 | 28.0-35.0 | 2.5 | 8.0 | 1.5 | 5-7 |
PVA2099L | 99.0-100 | 32.0-38.0 | 2.5 | 8.0 | 1.5 | 5-7 |
PVA2299L | 99.0-100.0 | 37.0-48.0 | 2.5 | 8.0 | 1.5 | 5-7 |
PVA2499L | 99.0-100.0 | 47.0-63.0 | 2.5 | 8.0 | 1.5 | 5-7 |
PVA2699L | 99.0-100 | 62.0-75.0 | 2.5 | 8.0 | 1.5 | 5-7 |
PVA2899L | 99.0-100 | 75.0-88.0 | 2.0 | 5.0 | 0.7 | 5-7 |
2. Medium Hydrolyzed Grade
Item Grade | Degree of alcoholysis (mol/mol) %≥ | Viscosity mpa.s | Sodium acetate %≤ | Volatile matter %≤ | Ash %≤ | PH value |
PVA1792L | 90.0-94.0 | 20.0-27.9 | 2.0 | 9.0 | 1.0 | 5-7 |
PVA1792H | 90.0-94.0 | 28.0-33.0 | 2.0 | 9.0 | 1.0 | 5-7 |
PVA2092 | 90.0-94.0 | 32.0-38.0 | 2.0 | 9.0 | 1.0 | 5-7 |
PVA1797L | 97.0-99.0 | 21.0-27.9 | 2.0 | 9.0 | 1.5 | 5-7 |
PVA1797H | 97.0-99.0 | 28.0-33.0 | 2.0 | 9.0 | 1.5 | 5-7 |
3.Transportation and storage:
Means of conveyance must be clean and equipped with weather-cloths so as o keep PVA off moisture, rains and sunlight, Careful handles with the packages save them from being scratched and broken. PVA must be laid in a
dry and well-ventilated place, keep it away from insulation, moisture, central heating or other heaters.
Good Quality PVA (Polyvinyl alcohol)
