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重要文件

P2522

Sigma-Aldrich

焦亚硫酸钾

≥98%

同義詞:

偏硫代硫酸钾, 偏重亚硫酸钾

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About This Item

線性公式:
K2S2O5
CAS號碼:
分子量::
222.32
EC號碼:
MDL號碼:
分類程式碼代碼:
12352302
PubChem物質ID:
NACRES:
NA.55
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等級

for analytical purposes

化驗

≥98%

形狀

powder

SMILES 字串

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

InChI

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

InChI 密鑰

RWPGFSMJFRPDDP-UHFFFAOYSA-L

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相關類別

一般說明

焦亚硫酸钾(偏亚硫酸氢钾,PMB)是一种具有抗菌作用的无机盐。[1] 它是一种硫化剂,可以防止食物褐变。[2] 已经评估了其遗传毒性和细胞毒性作用。[1] PMB经过水解,可形成焦亚硫酸钾。[3]

應用

焦亚硫酸钾已用于聚二甲基硅氧烷(PDMS)聚合物表面的改性方案中。[4]
它可用于以下过程:
  • β-相(β-PVDF)照射薄膜中聚(偏二氟乙烯)的化学蚀刻。[5]
  • 2-碘嘧啶衍生物合成过程中的脱色。[6]
  • 钯催化的芳基卤化物的氨基磺酰化反应。[7]

象形圖

Corrosion

訊號詞

Danger

危險聲明

危險分類

Eye Dam. 1

安全危害

儲存類別代碼

11 - Combustible Solids

水污染物質分類(WGK)

WGK 1


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Biofunctionalization and self-interaction chromatography in PDMS microchannels.
Deshpande KS, et al.
Biochemical Engineering Journal, 67, 111-119 (2012)
Nanoporous β-PVDF membranes with selectively functionalized pores.
Cuscito O, et al.
Nucl. Instrum. Methods Phys. Res. Sect. B, 265(1), 309-313 (2007)
A palladium-catalyzed reaction of aryl halides, potassium metabisulfite, and hydrazines.
Ye S and Wu J.
Chemical Communications (Cambridge, England), 48(80), 10037-10039 (2012)
Amperometric quantification of sodium metabisulfite in pharmaceutical formulations utilizing tetraruthenated porphyrin film modified electrodes and batch injection analysis.
Quintino MSM, et al.
Talanta, 68(4), 1281-1286 (2006)
Gábor Vlád et al.
The Journal of organic chemistry, 67(18), 6550-6552 (2002-08-31)
A high-yield synthesis was developed for the preparation of 2,2'-bipyrimidine (1) using the Ullmann coupling of 2-iodopyrimidine. The new procedure was also used for the preparation of 4,4',6,6'-tetramethyl-2,2'-bipyrimidine (2) and 5,5'-dibromo-2,2'-bipyrimidine (3).

Questions

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  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

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  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

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