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Sigma-Aldrich

Barium hydroxide octahydrate

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greener alternative

≥99.9% trace metals basis

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Synonym(s):
Barium dihydroxide octahydrate, Dihydroxybarium octahydrate
Linear Formula:
Ba(OH)2 · 8H2O
CAS Number:
Molecular Weight:
315.46
MDL number:
UNSPSC Code:
12352311
NACRES:
NA.21

Quality Level

Assay

≥99.9% trace metals basis

form

crystals, granules or powder

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color

white to off-white

mp

78 °C (lit.)

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SMILES string

O.O.O.O.O.O.O.O.O[Ba]O

InChI

1S/Ba.10H2O/h;10*1H2/q+2;;;;;;;;;;/p-2

InChI key

ZUDYPQRUOYEARG-UHFFFAOYSA-L

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General description

Barium hydroxide crystalizes as octahydrate. At 100°C, it transforms into barium hydroxide monohydrate, which produces barium oxide and water. It serves as a precursor in the synthesis of a compound containing barium. It is also employed in the titration of weak acids. Furthermore, the hydrolysis of ester and nitriles uses barium hydroxide octahydrate as a powerful base
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Application

Barium hydroxide octahydrate is used as a catalyst for the synthesis of methyl ester from rubber seed oil For thermal storage, barium hydroxide octahydrate is an important phase change material with a low melting point. It has a large heat capacity, as well as supercooling and phase separation phenomena during the cooling process Additionally, barium hydroxide octahydrate was used to produce a sodium gold sulfite solution, which was later used for electroless plating of thin gold films directly onto silicon nitride thin films and into micropores
Catalyzes the β-elimination of phosphoserine residues.

Pictograms

CorrosionExclamation mark

Signal Word

Danger

Hazard Statements

Hazard Classifications

Acute Tox. 4 Inhalation - Acute Tox. 4 Oral - Skin Corr. 1B

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Regulatory Information

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Experimental investigation of barium hydroxide octahydrate as latent heat storage materials
Wang Q, et al.
Solar Energy, 177, 99-107 (2019)
NAPHTHORESORCINOL
Meyer K, et al.
Organic Syntheses, 3, 637-637 (1945)
Electroless plating of thin gold films directly onto silicon nitride thin films and into micropores
Whelan J C, et al.
ACS Applied Materials & Interfaces, 6, 10952?10957-10952?10957 (2014)

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