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420840

Sigma-Aldrich

LUDOX® AS-40 colloidal silica

40 wt. % suspension in H2O

Synonym(s):

Silica preparation

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About This Item

Linear Formula:
SiO2
CAS Number:
Molecular Weight:
60.08
MDL number:
UNSPSC Code:
12352309
PubChem Substance ID:
NACRES:
NA.22

description

colloidal

Quality Level

form

liquid

concentration

40 wt. % suspension in H2O

surface area

~135 m2/g

pH

9.1

density

1.295 g/mL at 25 °C

SMILES string

O=[Si]=O

InChI

1S/O2Si/c1-3-2

InChI key

VYPSYNLAJGMNEJ-UHFFFAOYSA-N

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General description

LUDOX®  AS-40 colloidal silica is used as a silica source in the preparation of zeolites.

Application

Ludox AS-40 is used as:
  • A filler material in the nanocomposite Nafion films
  • A precursor in the synthesis of micro-mesoporous carbon spheres

Legal Information

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

Storage Class

12 - Non Combustible Liquids

wgk_germany

nwg

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

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


Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Separation of water?acetic acid mixtures by pervaporation using a thin mordenite membrane.
Li G, et al.
Separation and Purification Technology, 32(1-3), 199-206 (2003)
New opportunities in Stober synthesis: preparation of microporous and mesoporous carbon spheres
J Choma, et al.
Journal of Materials Chemistry, 22, 12636-12642 (2012)
The static aging effect on the seedless synthesis of different ranges FAU-type zeolite Y at various factors
Al-Jubouri, et al.
Iraqi Journal of Chemical and Petroleum Engineering, 20, 7-13 (2019)
Gel?Infused Slippery Surface with Enhanced Longevity and Thermally Controllable Sliding Properties.
Zhu G H, et al.
Advanced Materials Interfaces, 3(20), 1600515-1600515 (2016)
Interfacial Water Drives Improved Proton Transport in Siliceous Nanocomposite Nafion Thin Films
PJ Goossens, et al.
ChemPhysChem, 19, 538-546 (2018)

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