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1.58793

Supelco

Sodium hydroxide solution

50%, for analysis EMSURE®

别名:

氢氧化钠 溶液

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About This Item

线性分子式:
NaOH
CAS号:
1310-73-2
分子量:
40.00
MDL编号:
MFCD00003548
UNSPSC代码:
12352305
NACRES:
NA.21
价格与库存信息目前不能提供

产品名称

50% 氢氧化钠溶液, for analysis EMSURE®

等级

reagent

质量水平

300

Agency

suitable for DIN 38407-42
suitable for EPA 533
suitable for EPA 8327
suitable for EPA OTM-45

蒸汽压

2 hPa ( 20 °C)
3 mmHg ( 37 °C)

产品线

EMSURE®

表单

liquid

浓度

49.0-51.0% NaOH

杂质

≤0.0003% Total nitrogen (N)
≤0.0005% Al (Aluminium)
≤0.0005% Fe (Iron)
≤0.0005% Heavy metals (as Pb)
≤0.0005% Phosphate (PO4)
≤0.005% Silicate (SiO2)
≤0.005% Sulfate (SO4)
≤0.01% Chloride (Cl)
≤0.01% K (Potassium)

颜色

APHA: ≤10

pH值（酸碱度）

14 (20 °C, 89 g/L in H2O)

沸点

135 °C/1013 hPa

mp

12 °C

密度

1.52 g/cm3 at 20 °C

应用

PFAS testing

储存温度

15-25°C

SMILES字符串

[OH-].[Na+]

InChI

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

InChI key

HEMHJVSKTPXQMS-UHFFFAOYSA-M

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相关类别

应用


  • 可持续砖和砂浆制作：本文使用建筑渣土进行地聚合反应（过程中用到氢氧化钠溶液），提供一种制作可持续建筑材料的环保方法，。这种创新的解决方法不仅回收了废弃物，而且大大减少了新建筑物的碳足迹(Rahimpour et al., 2024)。

  • 水基钻井液：在油气工业研究中，使用氢氧化钠溶液改性牛骨胶水，提高它作为水基钻井液添加剂的性能。本文改进了钻井操作的环境影响和操作效率(Du et al., 2024)。

  • 滴定量热计的校准：滴定量热计的标准校准方法是将邻苯二甲酸氢钾与过量的氢氧化钠（溶液）反应。本法保证热分析的准确性和精密性，对于各种科研和工业应用有重要意义(Kenealey et al., 2024)。

  • 胶结料的碱激发：本文以氢氧化钠溶液为关键试剂，研究建筑胶结料的碱激发，比较不同材料以优化性能和可持续性。本文影响新一代建筑材料的开发(Alves et al., 2024)。

分析说明

含量（酸度，以NaOH计）：49.0 - 51.0 %
碳酸盐（以Na₂CO₃计）：≤ 0.2
颜色(Hazen)：≤ 10 Hazen
氯化物(Cl)：≤ 0.01 %
磷酸盐(PO₄)：≤ 0.0005 %
硅酸盐(SiO₂)：≤ 0.005 %
硫酸盐(SO₄)：≤ 0.005 %
总氮(N)：≤ 0.0003 %
重金属（以铅计）：≤ 0.0005 %
Al（铝）：≤ 0.0005 %
Fe（铁）：≤ 0.0005 %
K（钾）：≤ 0.02 %

法律信息

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

象形图

Corrosion
GHS05

警示用语：

Danger

危险声明

H290 - H314

危险分类

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

储存分类代码

8B - Non-combustible, corrosive hazardous materials

WGK

WGK 1

闪点(°F)

Not applicable

闪点(°C)

Not applicable

分析证书(COA)

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Questions

1–3 of 3 Questions  

  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

      Helpful?

  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

      Helpful?

  3. How is the NaOH prepared? How is the percentage calculated? How is the boiling point determined?

    1 answer

    1. This product is simply a mixture of sodium hydroxide (NaOH) and water at approximately 50 % by weight. The concentration is verified by acidimetric titration, with a specification range of 49.0-51.0 %. The boiling point is not determined internally, however, the value of 135°C reported on the product page is published in the chemical literature.

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