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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:
7631-86-9
Molecular Weight:
60.08
MDL number:
MFCD00011232
UNSPSC Code:
12352309
PubChem Substance ID:
24866356
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

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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 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

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

ISHL Indicated Name

Substances Subject to be Indicated Names

ISHL Notified Names

Substances Subject to be Notified Names

JAN Code

420840-4L:4548173940663
420840-1L:4548173940656
420840-VAR:
420840-18L:4548173940649
420840-BULK:

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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New opportunities in Stober synthesis: preparation of microporous and mesoporous carbon spheres
J Choma, et al.
Journal of Materials Chemistry, 22, 12636-12642 (2012)
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)
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)
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)
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