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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About This Item
推荐产品
等级
for analytical purposes
质量水平
蒸汽压
43 mmHg ( 215 °C)
方案
≥99.9% trace metals basis
表单
powder
反应适用性
reagent type: catalyst
core: tungsten
杂质
≤1000.0 ppm Trace Metal Analysis
沸点
347 °C (lit.)
mp
275 °C (lit.)
密度
3.52 g/mL at 25 °C (lit.)
SMILES字符串
Cl[W](Cl)(Cl)(Cl)(Cl)Cl
InChI
1S/6ClH.W/h6*1H;/q;;;;;;+6/p-6
InChI key
KPGXUAIFQMJJFB-UHFFFAOYSA-H
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一般描述
应用
- 作为水热法合成钨纳米颗粒[1]和Mo掺杂海胆状W18O49纳米结构的原料。Mo-W18O49电催化剂对析氢反应（HER）表现出优异的电催化活性。[2]通过将Mo掺杂到富含缺陷的W18O49超薄纳米线中，证明它是光催化N2固定合成氨的极佳选择。[3]
- 以高分子量两亲性嵌段共聚物为结构导向剂，合成孔径为11 nm的结晶性介孔WO3。这些材料在H2S气体传感方面表现出色。[4]
- 水热合成法制备二硫化钨和WS2/还原氧化石墨烯（WS2/rGO）纳米片。WS2/rGO纳米片在析氢反应中表现出优异的电催化活性。
- 生产WS2-纳米花@rGO和氮掺杂碳球@WS2复合材料作为负极材料，增强锂离子电池的电极性能。[5]
- 作为掺杂剂，制造性能增强的钙钛矿太阳能电池用TiO2致密层。[6]
- 作为催化剂制备具有微胶囊的自修复环氧树脂复合材料。[7]
- 作为叔烷基酰胺转酰胺反应的催化剂。[8]
警示用语：
Danger
危险声明
危险分类
Aquatic Chronic 3 - Eye Dam. 1 - Skin Corr. 1B - STOT SE 3
靶器官
Respiratory system
储存分类代码
8A - Combustible corrosive hazardous materials
WGK
WGK 3
闪点(°F)
Not applicable
闪点(°C)
Not applicable
个人防护装备
Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges
其他客户在看
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How is shipping temperature determined? And how is it related to the product storage temperature?
1 answer-
Helpful?
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How can I determine the shelf life / expiration / retest date of this product?
1 answer-
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.pdfHelpful?
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Hello. Could you possibly provide me with the average particle size and a brief description of the particle shape? I am looking for small, homogeneous nano-particles. An SEM image would be greatly appreciated. Thank you.
1 answer-
The particle size of this product is not determined, but is expected to be less than 2 mm. Unfortunately, an SEM image is currently not available.
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