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Merck
CN

939382

Sigma-Aldrich

Zinc Fluoride tetrahydrate

greener alternative

≥99.9% trace metals basis

Synonym(s):

Zinc difluoride tetrahydrate, Zinc(II) fluoride tetrahydrate

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About This Item

Empirical Formula (Hill Notation):
ZnF2·4H2O
CAS Number:
Molecular Weight:
175.45
MDL number:
UNSPSC Code:
12352200
Assay:
≥99.9% trace metals basis
99-102% (Complexometric Titration)
Form:
powder or crystals
Solubility:
water: slightly soluble
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type

(High purity Salts)

Quality Level

Assay

≥99.9% trace metals basis
99-102% (Complexometric Titration)

form

powder or crystals

greener alternative product characteristics

Catalysis
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impurities

≤1000 ppm (trace metals analysis)

color

white to off-white

mp

872 °C

solubility

water: slightly soluble

density

2.30 (g/cc)

anion traces

chloride (Cl-): ≤20 ppm

cation traces

Al: <20 ppm
Cu: <20 ppm
Fe: <20 ppm
K: <20 ppm
Mg: <20 ppm
Na: <20 ppm
Pb: <20 ppm

application(s)

(Optical Fibre)

greener alternative category

SMILES string

[Zn](F)F.O.O.O.O

InChI

1S/2FH.4H2O.Zn/h2*1H;4*1H2;/q;;;;;;+2/p-2

InChI key

OEUUYPRXVRBIFO-UHFFFAOYSA-L

General description

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Zinc Fluoride tetrahydrate is a white crystalline solid with slight solubility in water. It serves as a source of Zinc for oxygen-sensitive applications and is utilized as a mild fluorinating agent in halogenated hydrocarbons. Additionally, it is employed in the synthesis of fluoride glass optical fibers and optical transmitting glass.

Application

Zinc Fluoride tetrahydrate plays a key role in creating Zinc-based Triazolate Frameworks, Zinc metal Batteries, as well as in the production of glass optical fibers and optical transmitting glass. To illustrate, the synthesis of Zinc-based metal-triazolate frameworks involves mixing HdaTZ and HF in water, filtering the mixture into a microwave tube, adding ZnF2.4H2O, stirring for approximately an hour, heating the mixture in a microwave at 160°C for 1 minute, repeating this process for 30 minutes, and then allowing it to cool to room temperature, resulting in a reddish-white ZnF(daTZ). This substance is utilized to capture CO2 from flue gas. Similarly, to improve the cycling stability and address corrosion issues in aqueous Zn-based batteries, Zinc fluoride is used as a coatings applied to the surface of zinc metal anodes to make dendrite free anode. Researchers employed this simple and rapid anodic growth strategy to produce a 3D interconnected ZnF2 matrix on the surface of Zn metal to enhance wettability for aqueous electrolytes, elevated corrosion resistance, reduced hydrogen evolution reaction, and improved Zn2+ desolvation capability.

Pictograms

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Warning

Hazard Statements

Hazard Classifications

Acute Tox. 4 Inhalation - Acute Tox. 4 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - Skin Irrit. 2

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Regulatory Information

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Yang Yang et al.
Advanced materials (Deerfield Beach, Fla.), 33(11), e2007388-e2007388 (2021-02-09)
Aqueous rechargeable Zn metal batteries have attracted widespread attention due to the intrinsic high volumetric capacity, low cost, and high safety. However, the low Coulombic efficiency and limited lifespan of Zn metal anodes resulting from uncontrollable growth of Zn dendrites
Zhaolin Shi et al.
Journal of the American Chemical Society, 142(6), 2750-2754 (2020-01-24)
Construction of thermally and chemically robust metal-organic frameworks (MOFs) is highly desirable for postcombustion CO2 capture from flue gas containing water vapor and other acidic gases. Here we report a strategy based on appending amino groups to the triazolate linkers
Yang Zhou et al.
ACS applied materials & interfaces, 14(41), 46665-46672 (2022-10-05)
Aqueous Zn (zinc) metal batteries have gotten a lot of interest and research because of their great volumetric capacity, low production cost, and high use safety. However, the coulombic efficiency of the Zn metal anode is low due to Zn
Linear and non-linear refractive indices of tellurite glasses in the system TeO2?WO3?ZnF2
E. Yousef et al.
Journal of Non-Crystalline Solids, 342, 82-88 (2004)

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