Merck
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文件

安全信息

229865

Sigma-Aldrich

硒

powder, −100 mesh, 99.99% trace metals basis

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别名:
Se powder, Selenium metal powder
经验公式（希尔记法）:
Se
CAS号:
7782-49-2
分子量:
78.96
EC 号:
231-957-4
MDL编号:
MFCD00134090
PubChem化学物质编号:
24853754
NACRES:
NA.23

描述

gray

检测方案

99.99% trace metals basis

形式

powder

电阻率

1.2 μΩ-cm, 0°C

粒径

−100 mesh

bp

684.9 °C (lit.)

mp

217 °C (lit.)

密度

4.81 g/mL at 25 °C (lit.)

SMILES string

[Se]

InChI

1S/Se

InChI key

BUGBHKTXTAQXES-UHFFFAOYSA-N

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相关类别

一般描述

硒粉是由硒氧化物还原而来，是一种由小颗粒硒元素组成的细粉状物质。硒粉呈灰色或银色，可能有金属光泽该产品可通过100目筛网，表明其颗粒很小，直径约为150微米或更小。此外，该产品纯度较高，杂质浓度极低，适用于科研应用、化学测试和电子元件的生产。

应用

硒是 Dulbecco′s 改良的 Eagle 培养基中的一种成分，用于α小鼠肝脏（AML）-12肝细胞细胞系的细胞培养。Se 还用于水基合成谷胱甘肽封端的硒化镉量子点（GSH-CdSe QDs）。3Se 用于合成 CdSe，其通过改变半导体纳米结构的尺寸和形状而用于调节量子点太阳能电池的光响应。

特点和优势

我们99.99%的硒粉粒径小于150微米，非常适用于电子、化学测试及对纯度要求较高的研究中。
✔；质量稳定
✔；超高纯度
✔；可扩展：提供大规模和试点规模

象形图

Skull and crossbonesHealth hazard
GHS06,GHS08

警示用语：

Danger

危险分类

Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Aquatic Chronic 4 - STOT RE 2

储存分类代码

6.1C - Combustible, acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

WGK

WGK 2

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

法规信息

危险化学品

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István Robel et al.
Journal of the American Chemical Society, 128(7), 2385-2393 (2006-02-16)
By using bifunctional surface modifiers (SH-R-COOH), CdSe quantum dots (QDs) have been assembled onto mesoscopic TiO(2) films. Upon visible light excitation, CdSe QDs inject electrons into TiO(2) nanocrystallites. Femtosecond transient absorption as well as emission quenching experiments confirm the injection
Daniel D Karp et al.
Journal of clinical oncology : official journal of the American Society of Clinical Oncology, 31(33), 4179-4187 (2013-09-05)
Selenium has been reported to have chemopreventive benefits in lung cancer. We conducted a double-blind, placebo-controlled trial to evaluate the incidence of second primary tumors (SPTs) in patients with resected non-small-cell lung cancer (NSCLC) receiving selenium supplementation. Patients with completely
Waleed Alhazzani et al.
Critical care medicine, 41(6), 1555-1564 (2013-04-17)
Patients with sepsis syndrome commonly have low serum selenium levels. Several randomized controlled trials have examined the efficacy of selenium supplementation on mortality in patients with sepsis. To determine the efficacy and safety of high-dose selenium supplementation compared to placebo
Songtao Li et al.
Biochimica et biophysica acta, 1841(1), 22-33 (2013-09-24)
Saturated fatty acids (SFAs) induce hepatocyte cell death, wherein oxidative stress is mechanistically involved. Nuclear factor (erythroid-derived 2)-like 2 (Nrf2) is a master transcriptional regulator of cellular antioxidant defense enzymes. Therefore, Nrf2 activation is regarded as an effective strategy against
Claire M Weekley et al.
Nutrients, 5(5), 1734-1756 (2013-05-24)
Determining the speciation of selenium in vivo is crucial to understanding the biological activity of this essential element, which is a popular dietary supplement due to its anti-cancer properties. Hyphenated techniques that combine separation and detection methods are traditionally and
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