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Merck
CN

11044

Aluminum sulfate octadecahydrate

puriss., meets analytical specification of Ph. Eur., BP, 100-110%, 51.0-59.0% Al2(SO4)3 basis

Synonym(s):

Aluminum sulfate hydrate

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About This Item

Linear Formula:
Al2(SO4)3 · 18H2O
CAS Number:
7784-31-8
Molecular Weight:
666.43
PubChem Substance ID:
24846984
UNSPSC Code:
12352302
NACRES:
NA.21
EC Number:
233-135-0
Assay:
100-110%
Form:
crystals or chunks

Key Documents

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Product Name

Aluminum sulfate octadecahydrate, puriss., meets analytical specification of Ph. Eur., BP, 100-110%, 51.0-59.0% Al2(SO4)3 basis

InChI key

KFCWRPFNNIEZRY-UHFFFAOYSA-H

InChI

1S/2Al.3H2O4S.9H2O/c;;3*1-5(2,3)4;;;;;;;;;/h;;3*(H2,1,2,3,4);9*1H2/q2*+3;;;;;;;;;;;;/p-6

SMILES string

O=S(O)(O)=O.[AlH2][AlH2].O

grade

puriss.

assay

100-110%

form

crystals or chunks

quality

meets analytical specification of Ph. Eur., BP

concentration

51.0-59.0% Al2(SO4)3

impurities

residual solvents, complies
≤0.002% heavy metals (as Pb)
≤0.003% ammonium (NH4)
≤0.2% sub.not precip.b.NH4OH(SO4)

pH

2.5-4.0 (20 °C, 2%)

anion traces

chloride (Cl-): ≤50 mg/kg

cation traces

As: ≤3 mg/kg
Fe: ≤50 mg/kg

suitability

complies for appearance of solution

Quality Level

200

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Application

Aluminum sulfate octadecahydrate is used:
  • As a trace water source in the synthesis of cancrinite zeolite from geophagic clay.
  • In the solvent free synthesis of ZSM-5 Zeolites from rice husk silica.
  • In the preparation of polymeric metal complex dyes.

General description

Aluminum sulfate octadecahydrate (Al2(SO4)3.18H2O) is a hydrated aluminum salt. It is used as a catalyst and cross-linker during chemical reactions. Aluminum sulfate octadecahydrate is also used as a coagulating agent/flocculating agent in the purification of drinking water and wastewater treatment plants. It is also used in the paper industry for sizing.

pictograms

Corrosion
GHS05

signalword

Danger

hcodes

H290,H314

Hazard Classifications

Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1A

Storage Class

8B - Non-combustible corrosive hazardous materials

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

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Certificates of Analysis (COA)

Lot/Batch Number
BCCN9088
BCCN2417
BCCL3378
BCCJ8632
BCCK4356

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Nak Cheon Jeong et al.
Langmuir : the ACS journal of surfaces and colloids, 21(13), 6038-6047 (2005-06-15)
Various MX (M = Cd, Zn, and Mn, X = S and Se) semiconductor quantum dots (QDs) were prepared in zeolite Y. While the QDs are readily expelled from zeolite interior upon exposure of the MX QD-incorporating zeolite Y ([MX]-Y)
Hydrolysis products of water treatment chemical aluminium sulfate octadecahydrate by electrospray ionization mass spectrometry.
Sarpola A, et al.
Polyhedron, 26(12), 2851-2858 (2007)
Synthesis and light emitting properties of polymeric metal complex dyes based on hydroxyquinoline moiety.
Kim S-H, et al.
Dyes and Pigments, 55(2), 91-97 (2002)

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