Compoundfree
Compoundfree is an adjective used to describe conditions, surfaces, or products that lack detectable chemical compounds beyond a defined baseline. In materials science and surface chemistry, a compound-free surface implies absence of adsorbed or incorporated species other than the substrate material; verification relies on surface-sensitive techniques such as X-ray photoelectron spectroscopy or time-of-flight secondary ion mass spectrometry and depends on detection limits.
In consumer and industrial contexts, compound-free is often employed as a marketing or labeling term to suggest
Origin and usage of the term reflect its status as a neologism without a universal standard. It
Limitations and criticism include unclear thresholds for what constitutes “free” of compounds, inconsistent regulation, and the