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60489

Sigma-Aldrich

过二硫酸钾

puriss. p.a., ACS reagent, ≥99.0% (RT)

同義詞:

过硫酸钾

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About This Item

線性公式:
K2S2O8
CAS號碼:
分子量::
270.32
EC號碼:
MDL號碼:
分類程式碼代碼:
12352302
PubChem物質ID:
NACRES:
NA.21
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等級

ACS reagent
puriss. p.a.

化驗

≥99.0% (RT)

形狀

powder or crystals

雜質

≤0.001% total nitrogen (N)

pH值

2.5-4.5 (25 °C, 27 g/L)

負離子痕跡

chloride (Cl-): ≤10 mg/kg

正離子痕跡

Ag: ≤5 mg/kg
Al: ≤5 mg/kg
Ba: ≤5 mg/kg
Bi: ≤5 mg/kg
Ca: ≤50 mg/kg
Cd: ≤5 mg/kg
Co: ≤5 mg/kg
Cr: ≤5 mg/kg
Cu: ≤5 mg/kg
Fe: ≤5 mg/kg
Li: ≤5 mg/kg
Mg: ≤100 mg/kg
Mn: ≤1 mg/kg
Mo: ≤5 mg/kg
Na: ≤200 mg/kg
Ni: ≤5 mg/kg
Pb: ≤5 mg/kg
Sr: ≤5 mg/kg
Tl: ≤5 mg/kg
Zn: ≤5 mg/kg

應用

forensics and toxicology

SMILES 字串

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

InChI

1S/2K.H2O8S2/c;;1-9(2,3)7-8-10(4,5)6/h;;(H,1,2,3)(H,4,5,6)/q2*+1;/p-2

InChI 密鑰

USHAGKDGDHPEEY-UHFFFAOYSA-L

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相關類別

一般說明

过二硫酸钾也称为过硫酸钾(K2S2O8)。它通常用作有机合成中的氧化剂和聚合引发剂。

應用

过二硫酸钾可用作:      
  • 丙烯酰胺自由基聚合合成聚丙烯酰胺的聚合引发剂。      
  • 阿特拉津水溶液光化学氧化中的一种氧化剂。

K2S2O8 也可用于以下工艺:      
  • K2S2O8-AgSCF3 催化体系用于在温和条件下未活化的 C(sp3)-H 键的直接三氟甲硫基化。K2S2O8 在该过程中的使用在 C-H 键的活化和 AgSCF3 的氧化中起着重要作用。
  • K2S2O8-FeCl3 用于 2H-吲唑的硫氰酸化,使用硫氰酸铵作为硫氰酸剂。

其他說明

通过熔融作用进行分解的氧化剂[1][2]

訊號詞

Danger

危險分類

Acute Tox. 4 Oral - Eye Irrit. 2 - Ox. Sol. 3 - Resp. Sens. 1 - Skin Irrit. 2 - Skin Sens. 1 - STOT SE 3

標靶器官

Respiratory system

儲存類別代碼

5.1B - Oxidizing hazardous materials

水污染物質分類(WGK)

WGK 1

閃點(°F)

Not applicable

閃點(°C)

Not applicable

個人防護裝備

Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges


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分析證明 (COA)

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存取文件庫

Z. Sulcek et al.
Methods of Decomposition in Inorganic Analysis (1989)
R. Bock
Aufschlussmethoden der anorg. & org. Chemie (1972)
Harriet Mörtstedt et al.
Rapid communications in mass spectrometry : RCM, 25(2), 327-340 (2010-12-31)
Oxidative stress has been suggested as an underlying mechanism of many human diseases. However, definitive evidence for this association has not been presented due to different shortcomings of the methods used to measure biomarkers of oxidative stress. Persulfates are oxidizing
Zhiyong Yang et al.
The Journal of organic chemistry, 77(16), 7086-7091 (2012-07-28)
Nontransition metal-catalyzed synthesis of 2-aryl benzothiazoles was achieved through K(2)S(2)O(8)-mediated oxidative condensation of benzothiazoles with aryl aldehydes. The same transformation can also be effected when the aryl aldehydes were replaced with phenylglyoxylic acids.
Monica H Kåredal et al.
Journal of proteome research, 9(11), 5620-5628 (2010-09-08)
Hairdressers are frequently exposed to bleaching powder containing persulfates, a group of compounds that may induce hypersensitivity in the airways. The mechanism causing this reaction is not clear. The aim of this study was to identify changes in the nasal

Questions

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  1. 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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  2. 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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