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安全信息

157953

Sigma-Aldrich

连二亚硫酸钠

technical grade

别名:

亚硫酸氢钠, 连二亚硫酸钠

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About This Item

线性分子式:
NaO2SSO2Na
CAS号:
7775-14-6
分子量:
174.11
EC 号:
231-890-0
MDL编号:
MFCD00011640
UNSPSC代码:
12352302
PubChem化学物质编号:
329750858
NACRES:
NA.21
方案:
≥82.5% (iodometric)
等级:
technical grade
表单:
powder
溶解性:
water: soluble(lit.)

等级

technical grade

质量水平

200

方案

≥82.5% (iodometric)

表单

powder

pH值（酸碱度）

7-9 (20 °C, 50 g/L)

溶解性

water: soluble(lit.)

痕量阳离子

heavy metals: ≤0.002%

储存温度

room temp

SMILES字符串

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

InChI

1S/2Na.H2O4S2/c;;1-5(2)6(3)4/h;;(H,1,2)(H,3,4)/q2*+1;/p-2

InChI key

JVBXVOWTABLYPX-UHFFFAOYSA-L

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一般描述

连二亚硫酸钠（Na2S2O4）是白色结晶钠盐。它在大气氧存在下分解产生硫酸氢钠。它是由锌还原亚硫酸溶液中的亚硫酸氢钠制备的。它广泛用于纺织工业中布料染色前的脱色。

应用

在研究中，连二亚硫酸钠可用作还原剂，用于还原氧化石墨。
连二亚硫酸钠被用作通过产生不对称纳米颗粒包封多核苷酸中的荧光猝灭剂。它还以缓冲液的形式用于洗脱参与质谱法（MS）鉴定共价激酶抑制剂细胞靶标的探针标记蛋白。

象形图

FlameExclamation mark
GHS02,GHS07

警示用语：

Danger

危险声明

H251,H302,H319

危险分类

Acute Tox. 4 Oral - Eye Irrit. 2 - Self-heat. 1

补充剂危害

EUH031

储存分类代码

4.2 - Pyrophoric and self-heating hazardous materials

WGK

WGK 1

闪点(°F)

Not applicable

闪点(°C)

Not applicable

法规信息

监管及禁止进口产品

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分析证书(COA)

Lot/Batch Number
STBL3533
STBL4177
STBL4753
MKCW6491
MKCW2627

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  1. Which document(s) contains shelf-life or expiration date information for a given product?

    If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.

  2. How do I get lot-specific information or a Certificate of Analysis?

    The lot specific COA document can be found by entering the lot number above under the "Documents" section.

  3. How do I find price and availability?

    There are several ways to find pricing and availability for our products. Once you log onto our website, you will find the price and availability displayed on the product detail page. You can contact any of our Customer Sales and Service offices to receive a quote.  USA customers:  1-800-325-3010 or view local office numbers.

  4. What is the Department of Transportation shipping information for this product?

    Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product. 

  5. What is the solubility of Product 157953, Sodium hydrosulfite?

    According to the chemicals encyclopedia published by the Royal Society of Chemistry, 12th ed., Entry# 8771, this compound is very soluble in water, and only slightly in alcohol.

  6. What other species may be present in Product 157953, Sodium hydrosulfite?

    Sigma-Aldrich does not test for the presence or absence of impurities in this product..

  7. My question is not addressed here, how can I contact Technical Service for assistance?

    Ask a Scientist here.

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