Skip to Content
Merck
All Photos(1)

Key Documents

420840

Sigma-Aldrich

LUDOX® AS-40 colloidal silica

40 wt. % suspension in H2O

Synonym(s):

Silica preparation

Sign Into View Organizational & Contract Pricing


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

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

Looking for similar products? Visit Product Comparison Guide

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 Code

12 - Non Combustible Liquids

WGK

nwg

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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’.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

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)
Salt enhanced solvent relaxation and particle surface area determination via rapid spin-lattice NMR.
Elliott L N, et al.
Powder Technology, 333, 458-467 (2018)

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service