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Key Documents

Safety Information

688363

Sigma-Aldrich

Molecular sieves, 4 Å

powder, activated, −325 mesh particle size

Synonym(s):

SYLOSIV® A4, Sodium Alumino-Silicate

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About This Item

Linear Formula:
Na12[(AlO2)12(SiO2)12] · xH2O
CAS Number:
70955-01-0
MDL number:
MFCD00147627
UNSPSC Code:
23201100
eCl@ss:
32110204
NACRES:
NA.21

form

powder

particle size

−325 mesh

pore size

4 Å

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General description

Molecular sieves are made up of three dimensional interconnecting networks of silica and alumina tetrahedral. These crystalline metal aluminosilicates have uniform cavities to selectively adsorb specific size molecules. A 4A molecular sieve has an effective pore size of 4Å.

Application

Molecules with an effective diameter of 4 Å, including H2O, H2S, CO2, SO2, C2H4 and C3H6 are adsorbed.

Legal Information

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

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

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.

JAN Code

688363-1KG:
688363-25G:
688363-2.5KG:
688363-VAR:
688363-BULK:
688363-500G:

Certificates of Analysis (COA)

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