Zinc

Zinc is a metallic chemical element with the symbol Zn and CAS number 7440-66-6. It is a bluish-white, lustrous metal that occurs naturally in the Earth's crust and is essential for biological processes. With a molecular weight of 65.4 g/mol, zinc is classified as a transition metal and is widely used in industrial applications due to its corrosion-resistant properties and ability to form alloys.

Zinc is a solid metal at room temperature with a distinctive bluish-white appearance and metallic luster. It has a melting point of 419.5°C and a boiling point of 907°C. Zinc is relatively soft and malleable, with moderate density. It reacts slowly with moist air to form a protective oxide coating and is soluble in acids and alkalis but insoluble in water under normal conditions.

Zinc is primarily used for galvanizing steel and iron to prevent corrosion, accounting for about half of global zinc consumption. It serves as a key component in brass and bronze alloys, die-casting applications, and zinc-carbon batteries. Additionally, zinc is used in pharmaceuticals, cosmetics, rubber manufacturing, paint production, and as a dietary supplement due to its essential role in human nutrition and immune function.

Zinc should be handled using appropriate personal protective equipment including safety gloves, protective clothing, and eye protection. Work in well-ventilated areas to avoid inhalation of zinc dust or fumes, which can cause metal fume fever. Avoid contact with acids and strong alkalis as these can cause vigorous reactions. Implement proper housekeeping to minimize dust accumulation and ensure emergency shower facilities are available.

Zinc should be stored in a cool, dry, well-ventilated area away from moisture to prevent oxidation and corrosion. Keep containers tightly closed and protect from physical damage. Store away from incompatible materials such as strong acids, alkalis, and oxidizing agents. Ensure storage areas are equipped with appropriate spill containment measures and maintain proper inventory rotation to prevent degradation over time.

In case of skin contact with zinc dust, immediately wash the affected area thoroughly with soap and water. If zinc dust gets in eyes, flush immediately with plenty of clean water for at least 15 minutes and seek medical attention. If zinc fumes are inhaled, move the person to fresh air immediately and seek medical attention if respiratory irritation occurs. Remove contaminated clothing and wash before reuse.

Zinc must be disposed of according to local, national, and international waste regulations as it is classified as hazardous to the aquatic environment. Do not dispose of zinc in regular waste streams or allow it to enter waterways or soil. Contact licensed waste disposal companies for proper recycling or treatment. Zinc can often be recycled, making recovery and reuse the preferred disposal method when possible.

Zinc is classified under ADR Class 4.3 (substances which, in contact with water, emit flammable gases), Packing Group II. It requires proper packaging in UN-approved containers with appropriate labeling including the GHS09 environmental hazard pictogram and 'Warning' signal word. Transport vehicles must comply with ADR regulations, carry proper documentation, and drivers should be trained in hazardous materials handling procedures.

Zinc is regulated under various European legislations including CLP regulation for classification and labeling, displaying GHS09 pictogram as Aquatic Acute 1 and Aquatic Chronic 1. It falls under REACH regulation requiring registration for manufacture or import above one tonne annually. Zinc is not currently listed as an SVHC (Substance of Very High Concern) but users must comply with environmental protection measures due to its aquatic toxicity classification.

Zinc is available throughout Europe from specialized chemical distributors like OYSI, which supplies high-quality zinc products to industrial customers across European markets. OYSI provides technical support, regulatory compliance documentation, and reliable supply chain management. When purchasing zinc, ensure suppliers provide proper safety data sheets, certificates of analysis, and comply with REACH registration requirements for your specific applications.