Merck
CN
所有图片(5)

文件

799343

Sigma-Aldrich

偏亚硫酸氢钠

anhydrous, free-flowing, Redi-Dri™, ReagentPlus®, ≥99%

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所有图片(5)
别名:
偏二亚硫酸钠, 焦亚硫酸钠
线性分子式:
Na2S2O5
CAS号:
7681-57-4
分子量:
190.11
EC 号:
231-673-0
MDL编号:
MFCD00167602
PubChem化学物质编号:
329768704

等级

anhydrous

质量水平

100

产品线

ReagentPlus®
Redi-Dri™

检测方案

≥99%

形式

powder

质量

free-flowing

mp

>300 °C (lit.)

SMILES字符串

[Na+].[Na+].[O-]S(=O)S([O-])(=O)=O

InChI

1S/2Na.H2O5S2/c;;1-6(2)7(3,4)5/h;;(H,1,2)(H,3,4,5)/q2*+1;/p-2

InChI key

HRZFUMHJMZEROT-UHFFFAOYSA-L

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相关类别

一般描述

Redi-Dri™包装技术可避免盐类试剂结块，让你无需再通过复杂手段保持粉末自由流动。粉末维持干燥便于准确称量和轻松取用，改善实验结果。Redi-Dri™技术无抗结剂添加即可数月保持粉末的易用流动形式，让你不再需要对盐类试剂进行烘箱或干燥器干燥处理，或手动粉碎结块。重复取用后，结果依然准确。Redi-Dri™包装通过长期保证盐类试剂的方便易用，大幅节约您的时间、精力和金钱。

特点和优势

  • 提高效率–免除需要松散硬化粉末的时间和精力
  • 更加安全–避免使用工具大力敲碎团块的风险
  • 更加经济–制备和溶剂化速度更快，提高效率并节约成本
  • 质量保证–经过专业检测的出色品质，无抗结剂添加
  • 灵活的用量选择–有从研究到放大级别的用量规格可供选择

其他说明

在固体形式，该产品为焦亚硫酸钠，Na2S2O5。溶于水后，生成NaHSO3。

法律信息

ReagentPlus is a registered trademark of Merck KGaA, Darmstadt, Germany
Redi-Dri is a trademark of Sigma-Aldrich Co. LLC

象形图

CorrosionExclamation mark
GHS05,GHS07

警示用语：

Danger

危险声明

H302 - H318

危险分类

Acute Tox. 4 Oral - Eye Dam. 1

补充剂危害

EUH031

储存分类代码

13 - Non Combustible Solids

WGK

WGK 1

闪点(°F)

Not applicable

闪点(°C)

Not applicable

分析证书(COA)

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  1. How does Redi-Dri™ help keep salts and buffers free-flowing?

    Redi-Dri™ products are specially handled and the bottle is specially designed to ensure that the product will remain dry without adding impurities or additives to the product. Ensuring that you receive the highest quality material that is easy to handle.

  2. Are there any special storage conditions that must be maintained?

    No, Redi-Dri™ products can be stored under the same conditions as the equivalent non-Redi-Dri™ products.

  3. How long will material remain free-flowing after it is opened?

    While the exact amount of time your material will remain free-flowing can vary, this largely depends on the ambient storage conditions and how many times it is opened.

I U Nieves et al.
Bioresource technology, 102(13), 6959-6965 (2011-05-03)
Microaeration (injecting air into the headspace) improved the fermentation of hemicellulose hydrolysates obtained from the phosphoric acid pretreatment of sugarcane bagasse at 170°C for 10 min. In addition, with 10% slurries of phosphoric acid pretreated bagasse (180°C, 10 min), air
Jeffrey N Hemenway et al.
Journal of pharmaceutical sciences, 101(9), 3305-3318 (2012-05-23)
A 2,4-dinitrophenylhydrazine (DNPH) precolumn derivatization high-performance liquid chromatography-ultraviolet detection (HPLC-UV) method was developed to quantify levels of formaldehyde and acetaldehyde in polyethylene glycol (PEG) solutions. Formic acid and acetic acid were quantified by HPLC-UV. Samples of neat and aqueous PEG
Ivana Mara da Costa Machado Matos Carvalho et al.
Chemosphere, 82(7), 1056-1061 (2010-11-09)
Sodium metabisulfite is used in marine shrimp harvesting to prevent the occurrence of black spots. Shrimps are soaked in a sodium metabisulfite solution in ice, which is disposed of in sewages that run into marine canals, creating an environmental hazard.
David W Roberts et al.
Contact dermatitis, 66(3), 123-127 (2012-02-11)
Skin-sensitizing chemicals that cause allergic contact dermatitis do so by reacting with self-proteins such that the modified structure becomes antigenic. The reaction chemistry involved is well characterized, but there are exceptions, such as the occasional allergen sodium metabisulfite. To identify
Ilgaz Akdogan et al.
Toxicology and industrial health, 27(9), 771-778 (2011-04-23)
Sulfite, which is continuously formed in the body during metabolism of sulfur-containing amino acids, is commonly used in preservatives. It has been shown that there are toxic effects of sulfite on many cellular components. The aim of this study was
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Redi-Dri™ prevents hygroscopic powders, such as inorganic salts, from absorbing moisture and forming clumps, leaving the salts free-flowing every time.

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