What is one of the biggest changes from HAZCOM to GHS regarding hazard classification?

In the transition from HAZCOM to the Globally Harmonized System (GHS) of Classification and Labeling of Chemicals, one of the most significant changes is the establishment of new, specific criteria for health and physical hazards. This shift allows for a more standardized approach to how hazards are classified across different regions and organizations.

Prior to GHS, hazard classification was not as uniform, leading to potential confusion and varied interpretations. The GHS introduced clear and consistent criteria for determining what constitutes a health or physical hazard, thereby improving the clarity and effectiveness of safety communications concerning chemical risks. This standardization helps ensure that chemicals are classified consistently, facilitating better understanding and protection for workers and consumers alike, regardless of where they are in the world.

The other options do not reflect the central change associated with GHS. For example, while producers must label all chemicals, this requirement was also a part of the previous HAZCOM standard but is emphasized in the GHS context. Uniform packaging is not specifically mandated by GHS. Furthermore, while chemical mixtures were previously classified differently, GHS did not eliminate their classification; instead, it provided guidance on how to classify mixtures more effectively.