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Sigma-Aldrich

LUDOX ® HS-30 胶态二氧化硅

30 wt. % suspension in H2O

别名:

二氧化硅 制备

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1 L
$84.30
4 L
$192.00

$84.30

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1 L
$84.30
4 L
$192.00

About This Item

线性分子式:
SiO2
CAS号:
7631-86-9
分子量:
60.08
MDL编号:
MFCD00011232
UNSPSC代码:
12352309
PubChem化学物质编号:
24866354
NACRES:
NA.22

$84.30

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描述

colloidal

质量水平

100

表单

liquid

浓度

30 wt. % suspension in H2O

表面积

~220 m2/g

pH值（酸碱度）

9.8

密度

1.21 g/mL at 25 °C

储存温度

room temp

SMILES字符串

O=[Si]=O

InChI

1S/O2Si/c1-3-2

InChI key

VYPSYNLAJGMNEJ-UHFFFAOYSA-N

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一般描述

LUDOX® HS-40 胶态二氧化硅是单分散胶态二氧化硅颗粒的分散体，粒径小于100 nm。 [1] 含钠稳定反离子。

应用

LUDOX® HS-40 胶态二氧化硅可用于：
  • 通过定向冷冻合成聚合物-无机纳米复合材料[2]
  • 由水热法合成 Y 型[3] 沸石和 A 型沸石纳米晶体的胶态悬浮液 [4]
  • 作为胶态二氧化硅污垢模型，研究膜的污垢问题[5]

法律信息

LUDOX is a registered trademark of W.R. Grace & Co.-Conn.

储存分类代码

10 - Combustible liquids

WGK

nwg

闪点(°F)

Not applicable

闪点(°C)

Not applicable

个人防护装备

Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter

历史批次信息供参考:

分析证书(COA)

Lot/Batch Number
MKCT6178
MKCL9013
MKCL5253
MKCK2461
MKCJ9377

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Homogeneous polymer-zeolite nanocomposite membranes by incorporating dispersible template-removed zeolite nanocrystals.
Wang H, et al.
Journal of Materials Chemistry, 12(12), 3640-3643 (2002)
High silica zeolite Y nanocrystals by dealumination and direct synthesis.
Holmberg BA, et al.
Microporous and Mesoporous Materials : The Official Journal of the International Zeolite Association, 74(1-3), 189-198 (2004)
Influence of membrane and colloid characteristics on fouling of nanofiltration membranes.
Boussu K, et al.
Journal of Membrane Science , 289(1-2), 220-230 (2007)
Aligned two-and three-dimensional structures by directional freezing of polymers and nanoparticles.
Zhang H, et al.
Testing, 4(10), 787-787 (2005)
Mechanisms underlying the effects of membrane fouling on the nanofiltration of trace organic contaminants.
Nghiem LD, et al.
Desalination, 250(2), 682-687 (2010)
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Questions

1–3 of 3 Questions  

  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. 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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  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. 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

      Helpful?

  3. What is the smallest size of the silica particles?

    1 answer

    1. The Ludox products have an average particle size range of 7nm to 22nm. Please see the Ludox product comparison table below:

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