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Merck
CN

1.06469

氢氧化钠

pellets for analysis (max. 0.02% K) EMSURE® ACS,Reag. Ph Eur,ISO

别名:

‘苛性钠’

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关于此项目

线性分子式:
NaOH
化学文摘社编号:
分子量:
40.00
NACRES:
NA.21
EC Index Number:
215-185-5
UNSPSC Code:
12352305
MDL number:
Assay:
97.0-100.5% (total alkilinity calculated as NaOH)
Form:
pellets
Grade:
ACS reagent
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grade

ACS reagent

Quality Segment

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

97.0-100.5% (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): ≤1.0%, chloride (Cl-): ≤0.005%, silicate (as SiO2): ≤0.01%, sulfate (SO42-): ≤0.003%, phosphate (PO43-): ≤0.0005%

cation traces

Ca: ≤0.002%, Fe: ≤0.0010%, Ni: ≤0.00025%, Pb: ≤0.001%, heavy metals (as Ag): ≤0.002%, Al: ≤0.0005%, As: ≤0.0001%, Cu: ≤0.0002%, Hg: ≤0.00001%, K: ≤0.020%, Mg: ≤0.0005%, Zn: ≤0.001%

SMILES string

[OH-].[Na+]

storage temp.

2-30°C

InChI

1S/Na.H2O/h;1H2/q+1;/p-1

InChI key

HEMHJVSKTPXQMS-UHFFFAOYSA-M

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)。

Analysis Note

检测(酸度,NaOH):99-100%
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 %

Other Notes

替代品:SX0590;SX0590-20

Legal Information

EMSURE is a registered trademark of Merck KGaA, Darmstadt, Germany


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pictograms

Corrosion

signalword

Danger

hcodes

Hazard Classifications

Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1A

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

存储类别

8B - Non-combustible corrosive hazardous materials



历史批次信息供参考:

分析证书(COA)

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