品牌:康科德
规格:4L/瓶*4瓶/箱
起订:1瓶
发货:3天内
产品编号：8001UL4000
产品名称：4L超纯色谱级甲醇
产品指标：
|
检测项目Test Items |
单位Units |
指标要求Specifications |
|
含量Assay CH3OH(GC) |
% |
≥99.99 |
|
密度Density(20℃) |
g/mL |
0.791～0.793 |
|
与水混合试验Solubility with H2O |
|
合格Pass test |
|
蒸发残渣Residue on evaporation |
% |
≤0.0001 |
|
水分Water |
% |
≤0.03 |
|
酸度Acidity(as H+) |
mmol/g |
≤0.0002 |
|
碱度Alkalinity(as OH-) |
mmol/g |
≤0.0001 |
|
吸光度Absorbance at 205 nm |
AU |
≤1.0 |
|
吸光度Absorbance at 210 nm |
AU |
≤0.60 |
|
吸光度Absorbance at 220 nm |
AU |
≤0.20 |
|
吸光度Absorbance at 230 nm |
AU |
≤0.10 |
|
吸光度Absorbance at 250 nm |
AU |
≤0.02 |
|
吸光度Absorbance at 400nm |
AU |
≤0.005 |
|
梯度洗脱试验：254nm所有峰的吸光度Gradient Elution Test |
mAU |
≤2 |
|
梯度洗脱试验：235nm所有峰的吸光度Gradient Elution Test |
mAU |
≤2 |
|
荧光杂质Fluorescence impurityat 254 nm |
ppb |
≤1.0 |
|
荧光杂质Fluorescence impurity at 365 nm |
ppb |
≤1.0 |
