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Merck
CN

227617

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
PubChem Substance ID:
24853643
UNSPSC Code:
12352302
NACRES:
NB.24
EC Number:
233-135-0
Assay:
≥97%
98.0-102.0% (ACS specification)
Form:
chunks or granules
crystalline powder
powder or crystals

Key Documents

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Product Name

Aluminum sulfate octadecahydrate, ≥97%

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

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%

Quality Level

200

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Application

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

General description

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

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
MKCZ0374
MKCW7149
MKCV5028
MKCQ1795
MKCH2373

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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)
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)
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
Thermal decomposition kinetics of aluminum sulfate hydrate.
Cilgi GK and Cetisli H.
Journal of Thermal Analysis and Calorimetry, 98(3), 855-861 (2009)
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