styreeninhoud

Styreeninhoud refers to the concentration of styrene, a clear, colorless liquid monomer, within a material or mixture. Styrene is a key building block in the manufacture of polystyrene plastic, acrylate resins, and various industrial chemicals. The term is commonly used in quality control, safety assessment, and regulatory compliance, particularly in industries that produce or handle polymers containing styrene.

In analytical chemistry, styreeninhoud is determined by techniques such as high‑performance liquid chromatography (HPLC), gas chromatography (GC), and spectrophotometric methods. Sample preparation often involves solvent extraction, followed by detection of styrene’s characteristic ultraviolet absorbance or flammable properties. Accurate measurement is essential for compliance with occupational exposure limits set by organizations such as OSHA, NIOSH, and the EU Chemical Agency, which stipulate maximum permissible concentrations in workplace air and product formulations.

Regulatory regulations typically restrict the maximum styreeninhoud in consumer goods, especially those that contact food or skin. For example, the European Union’s Toy Safety Directive imposes limits on styrene migration in toys, and the Canadian Food Inspection Agency sets specific styrenic content thresholds for food packaging materials. In addition, many countries require labeling of products containing styrene above a certain concentration, providing consumer information and ensuring safe handling.

In practical applications, controlling styreeninhoud is also important for product performance. Residual styrene can affect the mechanical properties, color stability, and chemical resistance of polystyrene products. Manufacturers therefore employ thorough curing, cross‑linking, and purification steps to reduce residual styrene content and achieve consistent product quality.