Zinc

Zn

zinc

CAS7440-66-6
GHS09 Gefahrensymbol: Umweltgefährlich – Umwelt
Warning

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Identification

CAS Number
7440-66-6
EC Number
231-175-3
UN Number
1436
Index Number
030-001-00-1
PubChem CID
23994

Physical-chemical properties

Molecular Formula
Zn
Molar Mass
65.40 g/mol
IUPAC Name
zinc

Chemical Identifiers

InChI
InChI=1S/Zn
InChI Key
HCHKCACWOHOZIP-UHFFFAOYSA-N

Overview

Zinc (CAS 7440-66-6) is a bluish-white metallic element with excellent corrosion resistance and galvanic protection properties. As one of the most essential transition metals in industrial applications, zinc serves as a cornerstone material across numerous sectors. This versatile element exhibits remarkable anti-corrosive characteristics, making it indispensable for protective coatings and galvanization processes. With its atomic number 30 and molecular weight of 65.4 g/mol, zinc demonstrates unique electrochemical properties that have established its prominence in metallurgy and chemical manufacturing. The metal presents specific safety considerations, classified under GHS09 pictogram with a "Warning" signal word due to its aquatic toxicity profile (Aquatic Acute 1; Aquatic Chronic 1). Under ADR regulations, zinc falls under class 4.3, requiring appropriate handling protocols during transportation and storage. Despite these environmental considerations, zinc remains essential for industrial processes when managed according to established safety guidelines. Primary industrial applications include galvanization of steel structures, where zinc provides sacrificial protection against oxidation, brass and bronze alloy production for automotive and construction industries, and as a reducing agent in various chemical syntheses. The pharmaceutical and nutritional supplement sectors also utilize zinc compounds extensively. In specialized chemical applications, zinc often works alongside other materials such as copper(1+) thiocyanate in certain electrochemical processes, demonstrating its compatibility within complex formulation systems. Zinc's role extends beyond traditional metallurgy into advanced materials science, where its properties contribute to innovative coating technologies and specialized alloy development. OYSI maintains reliable zinc supply chains to support diverse European industrial requirements across these established applications.

Safety & Classification

Warning
Classification:

Aquatic Acute 1; Aquatic Chronic 1

HHazard Statements (H-Statements)

Describe the nature and severity of the hazard

H400

Very toxic to aquatic life.

H410

Very toxic to aquatic life with long lasting effects.

Classification according to CLP Regulation (EC) No 1272/2008. The complete list of hazard and precautionary statements can be found in the Safety Data Sheet (SDS).

First Aid Measures

Transport (ADR)

UN Number1436
ADR Class4.3
Packing GroupII
Tunnel CodeD/E
Proper Shipping NameZink-Pulver, leicht mit Wasser reagierend, selbsterhitzungsfähig
Marine PollutantNo

Frequently Asked Questions

What is zinc?

Zinc is a metallic chemical element with the symbol Zn and atomic number 30. This bluish-white metal is essential for numerous biological processes and industrial applications. With a molecular weight of 65.4 g/mol and CAS number 7440-66-6, zinc is classified as moderately reactive and naturally occurs in various mineral forms. It exhibits good corrosion resistance properties and is widely used across multiple industries for its protective and functional characteristics.

What are the physicochemical properties of zinc?

Zinc is a bluish-white metallic solid at room temperature with a distinctive metallic luster. It has a melting point of 419.5°C and a boiling point of 907°C. The metal is relatively soft and malleable, with moderate density. Zinc is insoluble in water but reacts with acids and alkalis. It forms a protective oxide layer when exposed to air, which prevents further corrosion and gives it excellent anti-corrosive properties.

What is zinc used for?

Zinc is primarily used for galvanizing steel and iron to prevent corrosion, accounting for about half of global consumption. It serves as an essential component in brass and bronze alloys, die-casting applications, and battery manufacturing. The pharmaceutical and cosmetic industries utilize zinc compounds for various formulations. Additionally, zinc plays crucial roles in rubber production, paint formulations, and as a dietary supplement, making it indispensable across multiple industrial sectors.

How to handle zinc safely?

Zinc requires careful handling due to its aquatic toxicity classification (Aquatic Acute 1, Aquatic Chronic 1). Wear appropriate personal protective equipment including safety goggles, gloves, and dust masks when handling powdered forms. Ensure adequate ventilation to prevent dust accumulation. Avoid generating dust or fumes, especially during heating processes. The GHS09 environmental pictogram indicates potential harm to aquatic environments, so prevent release into water systems and follow proper containment procedures.

How to store zinc correctly?

Zinc should be stored in a cool, dry, well-ventilated area away from moisture and incompatible materials. Keep containers tightly closed and properly labeled according to CLP regulations. Store away from acids, alkalis, and oxidizing agents to prevent unwanted reactions. Ensure storage areas have appropriate spill containment measures to prevent environmental release. Regularly inspect storage containers for signs of corrosion or damage, and maintain proper inventory records for regulatory compliance.

What to do in case of contact with zinc?

Zinc contact requires immediate response depending on the exposure route. For skin contact, remove contaminated clothing and wash thoroughly with soap and water. If zinc dust enters eyes, flush immediately with clean water for at least 15 minutes and seek medical attention. In case of inhalation, move to fresh air immediately. If ingestion occurs, rinse mouth and seek medical advice. Always consult safety data sheets for specific first aid measures and contact emergency services if serious symptoms develop.

How to dispose of zinc properly?

Zinc disposal must comply with local and European waste regulations due to its environmental classification. Contact licensed waste disposal companies specializing in metal waste management. Zinc can often be recycled through appropriate metal recovery facilities, which is the preferred disposal method. Never discharge zinc or zinc-containing solutions into drains, soil, or water bodies. Maintain proper waste documentation and follow WEEE directives if applicable. Consult local environmental authorities for specific disposal requirements in your region.

How to transport zinc?

Zinc is classified under ADR Class 4.3, Packing Group II, indicating it requires specific transport regulations. Use approved packaging materials and ensure proper labeling with hazard identification numbers and UN codes. Vehicles must carry appropriate emergency equipment and documentation. Drivers need ADR certification for dangerous goods transport. Ensure packages are properly secured, protected from moisture, and accompanied by transport documents. Follow route restrictions and notify relevant authorities as required by dangerous goods transport regulations.

Is zinc subject to specific regulations?

Zinc is subject to various European regulations including REACH registration requirements and CLP classification obligations. It is not listed as an SVHC (Substance of Very High Concern), but its aquatic toxicity requires compliance with environmental protection measures. Industrial users must follow workplace exposure limits and environmental emission controls. The substance requires safety data sheets and proper hazard communication. Companies handling zinc must comply with waste framework directives and water protection legislation due to its environmental classification.

Where to buy zinc in Europe?

OYSI is a reliable European distributor offering zinc for industrial and professional applications. As an established chemical supplier, OYSI provides quality zinc products with proper documentation, safety data sheets, and regulatory compliance support. Their European distribution network ensures efficient supply chain management for businesses requiring zinc for various applications. Contact OYSI directly for specific product grades, packaging options, and technical support to meet your zinc requirements while ensuring full regulatory compliance across European markets.

Data Sources

Classification per CLP Regulation (EC) No 1272/2008. Data from ECHA and PubChem.