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Merck

211176

Sigma-Aldrich

亚硒酸

98%

别名:

亚硒酸

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10 G
$84.90
50 G
$130.00
250 G
$410.00

About This Item

线性分子式:
H2SeO3
CAS号:
分子量:
128.97
EC 号:
MDL编号:
UNSPSC代码:
12352301
PubChem化学物质编号:
NACRES:
NA.22

$84.90


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质量水平

方案

98%

表单

solid

mp

70  °C ((lit.))
70 °C (dec.) (lit.)

溶解性

water: 50 mg/mL

密度

3.004  g/mL at 25 °C ((lit.))
3.004 g/mL at 25 °C (lit.)

SMILES字符串

O[Se](O)=O
O[Se](O)=O

InChI

1S/H2O3Se/c1-4(2)3/h(H2,1,2,3)
1S/H2O3Se/c1-4(2)3/h(H2,1,2,3)

InChI key

MCAHWIHFGHIESP-UHFFFAOYSA-N
MCAHWIHFGHIESP-UHFFFAOYSA-N

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应用

硒酸可作为一种试剂,以:
  • 在三氟化α-三氟化硼醚酸盐作为催化剂存在下与苯乙酮和三乙基乙二甲酸盐反应生成酮缩醛[1].
  • 作为一种溶剂,4-甲酰基-7-甲基香豆素在二甲苯存在的情况下使用4,7-二甲基香豆素[2]
  • 从2,3-二氯喹喔啉获得硒取代喹喔啉衍生物。

警示用语:

Danger

危险分类

Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - STOT RE 2

储存分类代码

6.1D - Non-combustible acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects

WGK

WGK 3

闪点(°F)

Not applicable

闪点(°C)

Not applicable

个人防护装备

Eyeshields, Faceshields, Gloves, type P2 (EN 143) respirator cartridges


历史批次信息供参考:

分析证书(COA)

Lot/Batch Number

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One-pot synthesis of alpha-ketoacetals from aryl methyl ketones in the presence of selenous acid catalyzed by boron trifluoride etherate
Kharkongor I, et al.
Tetrahedron Letters, 56, 4359-4362 (2015)
D Seidel et al.
Journal of clinical chemistry and clinical biochemistry. Zeitschrift fur klinische Chemie und klinische Biochemie, 16(7), 407-411 (1978-07-01)
A simple one-vial-method was developed for the quantitative determination of sphingomyelinase activity in human leukocytes and urine, using [14C-methyl] sphingomyelin. The measured activities of healthy control persons show a higher scatter in (n=50) urine (1.2 +/- 0.5 nmol/h . ml
Ropp RC et al.
Encyclopedia of the Alkaline Earth Compounds null
The synthesis of novel coumarin dyes and the study of their photoreaction properties
Wang T, et al.
Dyes and Pigments, 75, 104-110 (2007)
Y Kayanoki et al.
Journal of biochemistry, 119(4), 817-822 (1996-04-01)
Selenium-dependent glutathione peroxidase (GPx) plays a protective role in oxidative stress-induced apoptosis. In this study, we demonstrated that MDBK cells, a bovine renal epithelial cell line, exhibited internucleosomal DNA fragmentation characteristic of apoptotic cell death under selenium-deficient conditions with lower

Questions

1–2 of 2 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

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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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