项目 Item

规格 Grade

55HD

甲氧基 Methoxy (WT%)

27.5-31.5

凝胶温度 Gelation temperature (℃)

50.0-55.0

粘度 Viscosity (mPa.s) (2% solu., 20℃)

15, 20, 50, 100, 400, 4000

干燥失重 Loss on drying (%)

≤5.0

炽灼残渣 Residue on ignition (%)

≤1.0

pH

4.0-8.0

重金属 Heavy metals (ppm)

≤20

砷 Arsenic (ppm)

≤2.0