pH范围
|
6.1 - 7.5
|
纯度
|
≥99% (titration)
|
产品质量级别
|
ELITE
|
痕量阴离子
|
chloride (Cl-): ≤0.2%
|
痕量阳离子
|
Al: ≤0.005%
|
痕量阳离子
|
Ba: ≤0.0005%
|
痕量阳离子
|
Bi: ≤0.0005%
|
痕量阳离子
|
Ca: ≤0.005%
|
痕量阳离子
|
Cd: ≤0.0005%
|
痕量阳离子
|
Co: ≤0.0005%
|
痕量阳离子
|
Cr: ≤0.0005%
|
痕量阳离子
|
Cu: ≤0.0005%
|
痕量阳离子
|
Fe: ≤0.0005%
|
痕量阳离子
|
K: ≤0.005%
|
痕量阳离子
|
Li: ≤0.0005%
|
痕量阳离子
|
Mg: ≤0.0005%
|
痕量阳离子
|
Mn: ≤0.0005%
|
痕量阳离子
|
Mo: ≤0.0005%
|
痕量阳离子
|
Na: ≤0.1%
|
痕量阳离子
|
Ni: ≤0.0005%
|
痕量阳离子
|
Pb: ≤0.0005%
|
痕量阳离子
|
Sr: ≤0.0005%
|
痕量阳离子
|
Zn: ≤0.0005%
|
燃烧残渣
|
≤0.5% (as SO4)
|
杂质
|
Insoluble matter, passes filter test
|
干燥失重
|
≤0.5% loss on drying, 110°C
|
紫外吸收波长
|
A0.5M/260, 1 M NaOH ≤0.1
|
紫外吸收波长
|
A0.5M/280, 1 M NaOH ≤0.1
|
pKa
|
6.8
|
熔点
|
>300 °C(lit.)
|
溶解度
|
1 M NaOH: soluble0.5 M at 20 °C, clear, colorless
|
个人保护装置
|
Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter
|
德国WGK号
|
3
|