Gallium

Gallium is a soft, silvery metallic element with the chemical symbol Ga and atomic number 31. This post-transition metal has unique properties including an extremely low melting point of 29.8°C, making it liquid at room temperature or when held in hand. Gallium belongs to group 13 of the periodic table and has a molecular weight of 69.723 g/mol. It is considered non-hazardous under standard classification systems and does not require special GHS pictograms or signal words for handling.

Gallium is a silvery-blue metallic solid at room temperature that melts at 29.8°C, becoming a liquid metal. It has no characteristic odor and exhibits low vapor pressure at ambient conditions. The metal is insoluble in water but can dissolve in acids and alkalis. Gallium has excellent thermal and electrical conductivity, remains stable in dry air, and demonstrates unique wetting properties on glass and other materials, making it useful in specialized applications.

Gallium is primarily used in semiconductor applications, particularly in gallium arsenide (GaAs) compounds for high-frequency electronics, LEDs, and solar cells. It serves as a key component in gallium nitride (GaN) semiconductors used in power electronics and blue/white LEDs. Other applications include high-temperature thermometers, liquid metal cooling systems, and specialized alloys. The electronics industry represents the largest consumer of gallium due to its excellent electrical properties.

Gallium requires minimal safety precautions as it presents no significant health hazards under normal handling conditions. Standard laboratory practices should be followed including wearing nitrile gloves to prevent skin contact and safety glasses to protect eyes from splashes. Ensure adequate ventilation when heating gallium above its melting point. Avoid contact with aluminum and other metals that form brittle alloys. Work surfaces should be easy to clean as liquid gallium can wet many materials.

Gallium should be stored in chemically inert containers such as plastic, glass, or stainless steel vessels at room temperature. Avoid storage in aluminum, zinc, or steel containers as gallium can cause embrittlement of these metals. Keep containers tightly sealed to prevent contamination and store in a dry environment away from moisture. Temperature fluctuations around 30°C should be considered as gallium will transition between solid and liquid states.

Gallium contact requires minimal emergency measures due to its low toxicity profile. For skin contact, wash the affected area with soap and warm water to remove any residue. If gallium enters eyes, flush immediately with clean water for 15 minutes and seek medical advice if irritation persists. In case of ingestion, rinse mouth with water and consult a physician. Remove contaminated clothing and wash before reuse. No specific antidotes are required for gallium exposure.

Gallium disposal should follow local regulations for metallic waste as it is not classified as hazardous waste. Collect gallium residues in appropriate containers and deliver to licensed metal recycling facilities or specialized waste management companies. Avoid disposal in regular trash or down drains due to its value and potential environmental impact. Contact local environmental authorities for specific disposal requirements in your region, as regulations may vary between European countries.

Gallium is classified under ADR Class 8 (Corrosive substances) Group III for transportation purposes, despite its relatively benign nature. Packaging must comply with UN3208 specifications using appropriate containers that resist gallium's wetting properties. Standard shipping containers and documentation for Class 8 materials are required. The corrosive classification relates to potential equipment damage rather than immediate safety hazards. Consult current ADR regulations for specific packaging and labeling requirements.

Gallium is not classified as a Substance of Very High Concern (SVHC) under REACH regulation and requires no special GHS classification. Standard REACH registration requirements apply for quantities above one tonne per year. No specific restrictions exist under European chemical legislation due to its low toxicity profile. However, suppliers must provide Safety Data Sheets and ensure proper classification for transportation purposes. National regulations may apply for specific applications or quantities.

Gallium is available through OYSI, a European distributor of technical chemicals serving industrial and research customers across Europe. OYSI provides gallium in various purities and quantities suitable for different applications including semiconductor manufacturing and research purposes. As a specialized chemical distributor, OYSI ensures proper handling, packaging, and documentation compliance with European regulations. Contact OYSI directly for current availability, specifications, and technical support for your gallium requirements.