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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

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.

Application

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

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

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.

ISHL Indicated Name

Substances Subject to be Indicated Names

ISHL Notified Names

Substances Subject to be Notified Names

JAN Code

227617-100G:4548173983141
227617-VAR:
227617-2.5KG-D:
227617-100G-D:
227617-500G-D:
227617-4X2.5KG:
227617-2.5KG:4548173983158
227617-BULK:
227617-500G:4548173983165
227617-5G:

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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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)
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)
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)
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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