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227617

Sigma-Aldrich

Aluminum sulfate octadecahydrate

≥97%

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
EC Number:
233-135-0
UNSPSC Code:
12352302
PubChem Substance ID:
24853643
NACRES:
NB.24
Assay:
≥97%
98.0-102.0% (ACS specification)
form:
chunks or granules
crystalline powder
powder or crystals
Pricing and availability is not currently available.

Quality Level

200

Assay

≥97%
98.0-102.0% (ACS specification)

form

chunks or granules
crystalline powder
powder or crystals

reaction suitability

reagent type: catalyst
core: aluminum

impurities

≤0.01% insolubles

anion traces

chloride (Cl-): ≤0.005%

cation traces

Ca: 0.01%
Fe: ≤0.002%
K: 0.005%
Mg: 0.002%
Na: 0.02%
heavy metals (as Pb): ≤0.001%

SMILES string

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

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

InChI key

KFCWRPFNNIEZRY-UHFFFAOYSA-H

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General description

Aluminum sulfate is widely used as a coagulant in water treatment.[1]

Application

Aluminum sulfate octadecahydrate has been used in the preparation of Gill′s no. 2 hematoxylin stain.[2]

Pictograms

Corrosion
GHS05

Signal Word

Danger

Hazard Statements

H290,H314

Hazard Classifications

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

Storage Class Code

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
MKCW7149
MKCV5028
MKCQ1795
MKCH2373
MKCN7148

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Lucian C Staicu et al.
Chemosphere, 125, 130-138 (2015-01-07)
Biogenic selenium, Se(0), has colloidal properties and thus poses solid-liquid separation problems, such as poor settling and membrane fouling. The separation of Se(0) from the bulk liquid was assessed by centrifugation, filtration, and coagulation-flocculation. Se(0) particles produced by an anaerobic
Study of elimination and influence,of reaction parameters on aluminium sulfate stoichiometry /,pesticide ridomil-gold
Tadom D, et al.
International Journal of Scientific Engineering and Applied Science, 2(8) (2016)
Recovery of yttrium and lanthanides from sulfate solutions with high concentration of iron and low rare earth content.
Beltrami D, et al.
Hydrometallurgy, 157, 356-362 (2015)
Synthesis of hydrated aluminum sulfate from kaolin by microwave extraction.
Park SS, et al.
Journal of the American Ceramic Society. American Ceramic Society, 83(6), 1341-1345 (2000)
Sarah Zayan et al.
Polymers, 12(8) (2020-08-14)
Composite metal-organic frameworks combine large and accessible surface areas with low density and high stability. Herein, we present novel nanocomposites of polypyrrole/aluminum fumarate metal-organic framework (PPy/AlFu MOF), which were synthesized via in situ oxidative polymerization with the aim of MOF
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