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Merck

420824

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
NACRES:
NA.22
PubChem Substance ID:
24866354
UNSPSC Code:
12352309
MDL number:
MFCD00011232

Key Documents

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InChI

1S/O2Si/c1-3-2

SMILES string

O=[Si]=O

InChI key

VYPSYNLAJGMNEJ-UHFFFAOYSA-N

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

Quality Level

100

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

10 - Combustible liquids

wgk

nwg

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

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

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.

Substances Subject to be Indicated Names

ishl_indicated

Substances Subject to be Notified Names

ishl_notified

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

jan

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Certificates of Analysis (COA)

Lot/Batch Number
MKCL9013
MKCL5253
MKCK2461
MKCJ9377
MKCJ3736

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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)
Mechanisms underlying the effects of membrane fouling on the nanofiltration of trace organic contaminants.
Nghiem LD, et al.
Desalination, 250(2), 682-687 (2010)
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)
Aligned two-and three-dimensional structures by directional freezing of polymers and nanoparticles.
Zhang H, et al.
Testing, 4(10), 787-787 (2005)
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)
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