Zinc chloride

CAS 7646-85-7ZnCl2Catalysis & Inorganic

Zinc chloride (CAS 7646-85-7), with the linear formula ZnCl₂, is a white crystalline solid with a molecular weight of 136.30. It exhibits good solubility in water and is widely recognised for its utility as a catalyst and dehydrating agent in various chemical syntheses. This compound plays a crucial role in organic chemistry and industrial processes.

IUPAC: Dichlorozinc
Synonyms: Dichlorozinc

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Zinc chloride (ZnCl2) — chemical structure, CAS 7646-85-7; Chemistry, fine chemical supplied by Tech Serve Solutions

Chemical SynthesisZinc

01 /Applications

Catalysis in Organic Synthesis

Zinc chloride serves as an effective Lewis acid catalyst in numerous organic transformations, including Friedel-Crafts reactions, esterifications, and the synthesis of heterocyclic compounds. Its ability to coordinate with electron-rich species facilitates a wide range of synthetic pathways.

Dehydrating Agent

Due to its hygroscopic nature, zinc chloride is an excellent dehydrating agent, particularly useful in reactions where the removal of water is critical for driving equilibrium or preventing side reactions. It is employed in processes such as the preparation of anhydrous ethers and in certain textile treatments.

Flux for Soldering and Galvanising

In industrial applications, zinc chloride acts as a flux, cleaning metal surfaces by removing oxides prior to soldering or galvanising. This ensures better adhesion and a more durable finish for metal products.

Intermediate in Chemical Manufacturing

It functions as a key intermediate in the production of other zinc compounds and various chemicals. Its reactivity and properties make it a versatile building block in the chemical industry.

02 /Properties

Molecular weight	136.30
Linear formula	ZnCl2
Assay	≥97.0% (AT)
Density	1.07 g/mL at 25 °C
Solubility	H2O: soluble0.14 g/mL at 20 °C, clear, colorless
pH	4-5.5 (25 °C, 1 M in H2O)
Concentration	1.9 M in 2-methyltetrahydrofuran25 % (w/w)
Melting point	293 °C(lit.)
Vapour pressure	1 mmHg (428 °C)
Particle size	−10 mesh
Impurities tested	DNases, none detectedRNases, none detectedphosphatases, none detectedproteases, none detected≤10 mg/kg total nitrogen (N)
Suitability	in accordance for filter test

03 /Safety & handling

Precautionary statements

P273Avoid release to the environment
P280Wear protective gloves, clothing and eye/face protection
P305IF IN EYES
P310Immediately call a POISON CENTER or doctor
P501Dispose of contents and container per local regulations

Cation traces	As: ≤2 mg/kgCa: ≤100 mg/kgFe: ≤10 mg/kgPb: ≤50 mg/kg
Anion traces	sulfate (SO42-): ≤100 mg/kg

Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.

04 /Identifiers & registry

CAS number

7646-85-7

05 /Quality & supply

Documentation

Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.

Supply & logistics

Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.

06 /Frequently asked questions

What is Zinc chloride primarily used for?

Zinc chloride (CAS 7646-85-7) is primarily used as a catalyst and dehydrating agent in chemical synthesis, and as a flux in soldering and galvanising applications.

What are the CAS number and formula for Zinc chloride?

The CAS number for Zinc chloride is 7646-85-7, and its linear formula is ZnCl₂.

What grade and purity does Tech Serve Solutions supply?

Tech Serve Solutions supplies Zinc chloride with an assay of ≥97.0% (AT). TSS does not represent this product as USP, BP, or EP grade.

What are the key safety considerations when handling Zinc chloride?

Zinc chloride is corrosive and harmful. Handle with appropriate personal protective equipment, including gloves, eye protection, and protective clothing. Avoid contact with skin and eyes, and ensure adequate ventilation. Refer to the Safety Data Sheet (SDS) for full details.

How is Zinc chloride packed and shipped by TSS?

Zinc chloride is carefully packed to meet international shipping standards and is exported globally by Tech Serve Solutions to meet diverse customer needs.

How can I request a sample or quote for Zinc chloride?

To request a sample or a quote for Zinc chloride, please contact our sales team through the TSS website or by phone, providing your specific requirements.