Lab chemicals are essential components in scientific research, testing, and various industrial processes. They range from high-purity analytical reagents and solvents to biochemical reagents like enzymes and nucleotides. 

Ensuring the correct purity, proper handling, storage, and adherence to safety protocols is crucial. Lab chemicals are used across diverse fields, including biochemistry, molecular biology, pharmaceuticals, and quality control in manufacturing. 

Leading suppliers like Sigma-Aldrich, Thermo Fisher Scientific, and Merck provide extensive product ranges, accompanied by safety data sheets to support proper usage. Regulatory compliance, such as with OSHA and REACH standards, ensures safe and environmentally responsible practices.

Lab chemicals possess various properties that are crucial for their specific applications and safe handling. These properties include purity levels, which determine their suitability for sensitive analytical techniques or biochemical assays. 

Physical properties such as boiling and melting points, solubility, and density are essential for selecting the appropriate solvent or reagent for a given process. Chemical properties, including reactivity, stability, and compatibility with other substances, influence their use in reactions and storage requirements.

Additionally, lab chemicals are categorized based on their hazard levels, which dictate necessary safety precautions, such as the use of personal protective equipment (PPE) and proper labeling with hazard symbols. Understanding these properties helps in achieving accurate results, maintaining safety standards, and ensuring regulatory compliance in laboratory environments.