This product is not specified to be spherical. If a spherical nanoparticle is required, product 637246 would be the best option.
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品質水準
アッセイ
99.5% trace metals basis
フォーム
nanopowder
粒径
10-20 nm (BET)
bp
2230 °C (lit.)
mp
>1600 °C (lit.)
密度
2.2-2.6 g/mL at 25 °C
かさ密度
0.011 g/mL
SMILES記法
O=[Si]=O
InChI
1S/O2Si/c1-3-2
InChI Key
VYPSYNLAJGMNEJ-UHFFFAOYSA-N
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関連するカテゴリー
保管分類コード
11 - Combustible Solids
WGK
nwg
引火点(°F)
Not applicable
引火点(℃)
Not applicable
個人用保護具 (PPE)
dust mask type N95 (US), Eyeshields, Gloves
適用法令
試験研究用途を考慮した関連法令を主に挙げております。化学物質以外については、一部の情報のみ提供しています。 製品を安全かつ合法的に使用することは、使用者の義務です。最新情報により修正される場合があります。WEBの反映には時間を要することがあるため、適宜SDSをご参照ください。
労働安全衛生法名称等を表示すべき危険物及び有害物
名称等を表示すべき危険物及び有害物
労働安全衛生法名称等を通知すべき危険物及び有害物
名称等を通知すべき危険物及び有害物
Jan Code
637238-BULK:
637238-50G:4548173944906
637238-500G:4548173944890
637238-250G:4548173944883
637238-VAR:
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Unusual nonlinear optical properties of SiO2 nanocomposite in weak optical fields
Milichko VA, et al.
Applied Physics. A, Materials Science & Processing, 111(1), 319-322 (2013)
APS-silane modification of silica nanoparticles: effect of treatm,ent's variables on the grafting content and colloidal stability of nanoparticles
Journal of Coatings Technology and Research, 11(4), 651-660 (2014)
Nanocomposite calcium alginate fibres containing SiO2 and bioglass
Bogun M, et al.
Spine, 12, 18-18 (2010)
Saisai Wei et al.
The international journal of biochemistry & cell biology, 113, 95-102 (2019-06-21)
ZnO nanoparticle (ZnO NP) exposure causes oxidative stress in the respiratory system, leading to pulmonary damage. Activating transcription factor 3 (ATF3) participates in a variety of cellular stress responses. However, the role of ATF3 in ZnO NP genotoxicity and cytotoxicity
Yaswanth Kuthati et al.
Journal of nanoscience and nanotechnology, 13(4), 2399-2430 (2013-06-15)
The advent of Nanotechnology has paved a way for improved disease treatment strategies, the most noteworthy being the mesoporous silica nanoparticles (MSNs) which have gained much recent attention in the field of cancer therapy and its diagnosis. The flaws of
資料
シリコンは、既知の材料の中で最も高い容量を有し、比較的低い作動電位を示すなどの利点があることから、リチウムイオン電池用の最も有望な負極材料の1つです。
Recent demand for electric and hybrid vehicles, coupled with a reduction in prices, has caused lithium-ion batteries (LIBs) to become an increasingly popular form of rechargeable battery technology.
Hydrogen is one of the most important resources in providing food, fuel, and chemical products for our everyday life. Sustainable catalytic hydrogen production from bioethanol has gained significant attention in recent years due to globally diminishing fossil fuel supplies, which have necessitated the search for new chemical feedstocks.
バイオエタノールからの持続可能な水素製造は、化石燃料供給が減少する中で牽引役となっています。
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1 回答-
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What is the surface area of this product according to BET?
1 回答-
The surface area of this material is not determined on a lot to lot basis. However, historical data indicate a specific surface area range of 25 - 50 m2/g.
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How can I determine the shelf life / expiration / retest date of this product?
1 回答-
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役に立ちましたか？
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How is shipping temperature determined? And how is it related to the product storage temperature?
1 回答-
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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¿Do you offer silica nanoparticles for impermeabilization of textile? We bought this product last year: silica nanopowder, 10-20 nm particle size (BET), 99.5% trace metals basis ref. 637238 - but it didn´t work for that application
1 回答-
There are several silica nanoparticles offered, however, these are not specifically for the coating of textiles.
The products below may or may not be suitable for the specified application:
https://www.sigmaaldrich.com/product/aldrich/748161
https://www.sigmaaldrich.com/product/aldrich/637246
https://www.sigmaaldrich.com/product/aldrich/718483役に立ちましたか？
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what is BET? abbreviation of BET?
1 回答-
BET stands for Brunauer-Emmett-Teller. It is a surface analysis technique used to measure specific surface area, pore size distribution, and particle size.
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What is the shelf life (useful life) of Silicon dioxide (637246-50G) nano powder having CAS No. 7631-26-9
1 回答-
This product does not contain an expiration date or recommended retest date. Products with no expiration date or recommended retest date should be routinely inspected by customers to ensure they perform as expected. These products are also subject to a one year warranty from the date of shipment. For more information you may access the "Product Dating Information" document under "ADDITIONAL USEFUL DOCUMENTS ABOUT OUR PRODUCTS" at the bottom of the Quality Services page with this link: https://www.sigmaaldrich.com/life-science/quality-and-regulatory-management/quality-services
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I need food-grade silicon dioxide. is it available or not?
1 回答-
We do not offer a food-grade silicon dioxide. However, we do offer a pharmaceutical grade silicon dioxide that can be used for food grade applications. Please see this product: https://www.sigmaaldrich.com/product/mm/113126.
Our food grade items reside in our flavors and fragrance portfolio and will typically start with a "W" in the product code. To look into the food grade products we offer please see this link to our flavors and fragrance product portfolio: https://www.sigmaaldrich.com/products/chemistry-and-biochemicals/flavors-and-fragrances?country=US&language=en&cmsRoute=products&cmsRoute=chemistry-and-biochemicals&cmsRoute=flavors-and-fragrances&page=1&searched=Silicon+dioxide
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Does this product contain hydroxyl groups?
1 回答-
We have not determined the presence of OH groups in this product, but it seems likely. One can do FT-IR analysis on this product.
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Is Product 637238, Silica,crystalline?
1 回答-
Our information indicates that product 637238 is amorphous.
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アクティブなフィルタ
ライフサイエンス、有機合成、材料科学、クロマトグラフィー、分析など、あらゆる分野の研究に経験のあるメンバーがおります。.
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