Merck
CN

209651

Sigma-Aldrich

powder, −100 mesh, ≥99.5% trace metals basis

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Empirical Formula (Hill Notation):
Se
CAS号:
分子量:
78.96
EC 号:
MDL编号:
PubChem化学物质编号:

描述

gray

质量水平

检测方案

≥99.5% trace metals basis

形式

powder

reaction suitability

reagent type: catalyst
core: selenium

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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此商品
229865204307GF10763456
Selenium powder, −100 mesh, ≥99.5% trace metals basis

Sigma-Aldrich

209651

Selenium powder, −100 mesh, 99.99% trace metals basis

Sigma-Aldrich

229865

Selenium pellets, <5 mm particle size, ≥99.999% trace metals basis

Sigma-Aldrich

204307

Selenium lump, 3 mm max. lump size, weight 20 g, high purity 99.999%

GF10763456

form

powder

form

powder

form

pellets

form

lumps

reaction suitability

reagent type: catalyst
core: selenium

reaction suitability

-

reaction suitability

-

reaction suitability

-

bp

684.9 °C (lit.)

bp

684.9 °C (lit.)

bp

684.9 °C (lit.)

bp

684.9 °C (lit.)

mp

217 °C (lit.)

mp

217 °C (lit.)

mp

217 °C (lit.)

mp

217 °C (lit.)

density

4.81 g/mL at 25 °C (lit.)

density

4.81 g/mL at 25 °C (lit.)

density

4.81 g/mL at 25 °C (lit.)

density

4.81 g/mL at 25 °C (lit.)

一般描述

硒粉是一种细小的粉末状物质,由硒元素的小颗粒组成,通常通过氧化硒的还原来生产。硒粉是灰色或银白色的,可能有淡红色的金属光泽。该产品以100目筛网处理,这表明颗粒较小,直径约为150微米或更小,这确保粉末细小且易于处理。

应用

硒用于 CdSe 的合成,从而通过改变半导体纳米结构的大小和形状来调节量子点太阳能电池的光响应。

象形图

Skull and crossbonesHealth hazard

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

分析证书(COA)

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示例

T1503
货号
-
25G
包装规格/数量

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1000309185

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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
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
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
Kai-Oliver Feldmann et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 21(27), 9697-9712 (2015-05-12)
Although a fairly large number of binary group 15/16 element cations have been reported, no example involving phosphorus in combination with a group 16 element has been synthesized and characterized to date. In this contribution is reported the synthesis and structural characterization
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

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