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
S5505
Silica, fumed
powder, 0.2-0.3 μm avg. part. size (aggregate)
동의어(들):
Silica, Silicic anhydride, Silicon dioxide, Silicon dioxide amorphous
크기 선택
About This Item
추천 제품
양식
powder
표면적
200 m2/g (±25 m2/g)
refractive index
n20/D 1.46 (lit.)
평균 부품 크기
0.2-0.3 μm (aggregate)
density
2.3 lb/cu.ft at 25 °C (bulk density)(lit.)
SMILES string
O=[Si]=O
InChI
1S/O2Si/c1-3-2
InChI key
VYPSYNLAJGMNEJ-UHFFFAOYSA-N
유사한 제품을 찾으십니까? 방문 제품 비교 안내
애플리케이션
- Chlorosilanes via silanization, which are used to prepare silica/polydimethylsiloxane membranes to study permeation performance.[1]
- Silicon carbide (SiC) nanoparticles by sol-gel method.[2]
- Calcium silicate hydrate (C-S-H) by treating with CaO and water via hydrothermal reaction.[3]
- Si/PtO2 catalyst for the selective conversion of cinnamaldehyde to cinnamic acid by aerobic oxidation.[4]
It can be also used in the preparation of:
- Silica sulfuric acid catalyst used in the synthesis of 3,4-dihydropyrimidin-2(1H)-ones via one-pot three-component Biginelli reaction.[5]
- HClO4-SiO2 heterogeneous catalyst used in the synthesis of tetrasubstituted imidazoles.[6]
특징 및 장점
기타 정보
Storage Class Code
11 - Combustible Solids
WGK
WGK 2
Flash Point (°F)
Not applicable
Flash Point (°C)
Not applicable
개인 보호 장비
Eyeshields, Gloves, type N95 (US)
가장 최신 버전 중 하나를 선택하세요:
시험 성적서(COA)
이미 열람한 고객
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How is shipping temperature determined? And how is it related to the product storage temperature?
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도움이 되었습니까?
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How can I determine the shelf life / expiration / retest date of this product?
1 답변-
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.pdf도움이 되었습니까?
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is this hydrophobic
1 답변-
This product is hydrophilic. Please see the data sheet for more information: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/product/documents/246/034/s5505pis.pdf
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