Merck
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420816

Sigma-Aldrich

LUDOX® HS-40 colloidal silica

40 wt. % suspension in H2O

Synonym(s):
Silica preparation
Linear Formula:
SiO2
CAS Number:
Molecular Weight:
60.08
MDL number:
PubChem Substance ID:
NACRES:
NA.22

description

colloidal

Quality Level

form

viscous liquid

concentration

40 wt. % suspension in H2O

surface area

~220 m2/g

pH

9.8

density

1.3 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

Contains ~250ppm of total biocides (5-chloro-2-methyl-4-isothiazolin-3-one and 2-methyl-2H-isothiazol-3-one (3:1))

Application

LUDOX® HS-40 colloidal silica can be used as a silica source to synthesize sulfate sodalite[04], zeolite[05] and aluminosilicate gels.[06] It can also be used as a gradient medium in density gradient centrifugation technique.[07]
It contains sodium stabilizing counterion.

Packaging

1, 4 L in poly bottle
18 L in VerSA-Flow™

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

Certificate of Analysis

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Certificate of Origin

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