Data Structure
Categorization of hydrocarbon chain lengths by their boiling point equivalents provides a detailed profile of mineral oil contaminants in packaging materials. Instead of a single total value, carbon fraction reporting divides the identified substances into specific ranges such as those below C16 or between C20 and C25. This granular approach allows regulators to assess the toxicity and migration potential of different molecular weights.
Physical properties vary significantly across these segments.
Quantification Threshold
Standard methods define the boundaries for each fraction to ensure consistency across different testing facilities. When a laboratory performs carbon fraction reporting, the software integrates the area under the hump for each defined window. Each segment is then quantified against an internal standard.
Compliance Threshold
Toxicological assessments prioritize certain fractions over others because smaller molecules migrate more readily through paper and into dry foods. Results presented in this format allow manufacturers to identify whether a contamination issue stems from heavy lubricants or light solvents. Precise documentation of these values is required for the technical file of a food contact material.
Many European guidelines specify limits for the C16 to C35 range in particular. This level of detail supports the safety evaluation of recycled board.
