产品名称
氢氧化钠, pellets for analysis (max. 0.02% K) EMSURE® ACS,Reag. Ph Eur,ISO
InChI
1S/Na.H2O/h;1H2/q+1;/p-1
SMILES string
[OH-].[Na+]
InChI key
HEMHJVSKTPXQMS-UHFFFAOYSA-M
grade
ACS reagent
agency
reag. ISO
reag. Ph. Eur.
vapor density
>1 (vs air)
vapor pressure
<18 mmHg ( 20 °C)
3 mmHg ( 37 °C)
product line
EMSURE®
assay
99-100% (total alkilinity calculated as NaOH)
form
pellets
impurities
≤0.0003% Total nitrogen (N)
pH
>14 (20 °C, 100 g/L in H2O)
mp
318 °C (lit.)
solubility
water: 1090 g/L at 20 °C
density
2.13 g/cm3 at 20 °C
anion traces
carbonate (as Na2CO3): ≤0.5%
chloride (Cl-): ≤0.0005%
phosphate (PO43-): ≤0.0005%
silicate (as SiO2): ≤0.001%
sulfate (SO42-): ≤0.0005%
cation traces
Al: ≤0.0005%
As: ≤0.0001%
Ca: ≤0.0005%
Cu: ≤0.0002%
Fe: ≤0.0005%
Hg: ≤0.00001%
K: ≤0.020%
Mg: ≤0.0005%
Ni: ≤0.0005%
Pb: ≤0.0005%
Zn: ≤0.001%
heavy metals (as Ag): ≤0.0005%
heavy metals (as Pb): ≤0.0005%
storage temp.
2-30°C
Quality Level
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Analysis Note
检测(总碱度以NaOH计算):99-100%
验证:通过测试
溶液外观:通过测试
碳酸盐(Na₂CO₃形式): ≤ 0.5 %
氯化物(Cl): ≤ 0.0005 %
磷酸盐(PO₄): ≤ 0.0005%
硅酸盐(SiO₂): ≤ 0.001 %
硫酸盐(SO₄): ≤ 0.0005 %
总氮(N): ≤ 0.0003%
重金属(以银计): ≤ 0.0005 %
重金属(以铅计): ≤ 0.0005 %
Al(铝): ≤ 0.0005 %
As(砷): ≤ 0.0001 %
Ca(钙): ≤ 0.0005 %
Cu(铜): ≤ 0.0002 %
Fe(铁): ≤ 0.0005 %
Hg(汞): ≤ 0.00001 %
K(钾): ≤ 0.020 %
Mg(镁): ≤ 0.0005 %
Ni(镍): ≤ 0.0005 %
Pb(铅): ≤ 0.0005 %
Zn(锌): ≤ 0.001 %
Application
- Biosorbent derived from coffee husk for efficient removal of toxic heavy metals from wastewater.:研究人员利用咖啡壳开发一种生物吸附剂去除废水重金属。氢氧化钠在咖啡壳的化学活化中起重要作用,可提高吸附能力(Quyen et al., 2021)。
- Development of Advanced Chemometric-Assisted Spectrophotometric Methods for the Determination of Cromolyn Sodium and Its Alkaline Degradation Products.:本文提供一种先进的光谱法分析色甘酸钠及其降解产物。氢氧化钠用于诱导色甘酸钠降解,以便研究降解产物(El Zahar et al., 2020)。
- High resolution and high throughput analytical methods for d-tagatose and process related impurities using capillary electrophoresis.:本文开发毛细管电泳法分析d-塔格糖及其杂质。氢氧化钠用作电解质以改善电泳的分离及分辨率(Surapureddi et al., 2020)。
- Phosphorus in recycling fertilizers - analytical challenges.:本文解决回收肥料中磷的测定问题。氢氧化钠用于调节样品pH,对实现准确的磷检测有重要作用(Krüger and Adam, 2017)。
Other Notes
Legal Information
signalword
Danger
hcodes
Hazard Classifications
Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1A
存储类别
8A - Combustible corrosive hazardous materials
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
法规信息
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