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420824

Sigma-Aldrich

LUDOX® HS-30 colloidal silica

30 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:
24866354
NACRES:
NA.22

description

colloidal

form

liquid

concentration

30 wt. % suspension in H2O

surface area

~220 m2/g

pH

9.8

density

1.21 g/mL at 25 °C

storage temp.

room temp

SMILES string

O=[Si]=O

InChI

1S/O2Si/c1-3-2

InChI key

VYPSYNLAJGMNEJ-UHFFFAOYSA-N

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General description

LUDOX® HS-40 colloidal silica is the dispersion of monodispersed colloidal silica particles having the size smaller than 100 nm. It contains sodium stabilizing counterion.

Application

LUDOX® HS-40 colloidal silica can be used:
  • For the synthesis of polymer–inorganic nanocomposites by directional freezing.
  • To synthesize colloidal suspensions of zeolite Y and zeolite A nanocrystals by hydrothermal method.
  • As a model for colloidal silica foulants to study the membrane fouling.

Legal Information

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

Storage Class Code

10 - 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

420824-BULK:
420824-1L:4548173940601
420824-18L:
420824-4L:4548173940618
420824-VAR:

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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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)
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)
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)
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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