1. Basic Format Verification
First, check the label's dimensions and layout:
Verify that the minimum label dimensions correspond to the packaging capacity: for packaging >3L, the label must be no smaller than 74×105 mm; for packaging >50L, it must be no smaller than 105×148 mm. Ensure that the pictogram dimensions also meet the corresponding requirements;
Intact Border: The label must feature a black border of ≥1 mm, with a clear margin of ≥3 mm left outside the border; there should be no signs of cropping or missing edges;
Correct Placement: The label must be affixed to a conspicuous location on the packaging (e.g., the bottle body or the side of the box); it must not be obstructed or peeling, and the information must be clearly legible.
2. Completeness Verification
Confirm that no mandatory elements are missing:
A complete label must include the following 10 items: the chemical's name (in both English and the local language), molecular formula (optional for mixtures), UN/CN number, pictograms, signal word, hazard statement, precautionary statements, emergency contact number, supplier information, and production batch number. The omission of any single item constitutes an error;
For simplified labels on packaging ≤100 mL, the following mandatory items must still be retained: chemical identification, pictograms, signal word, hazard statement, emergency contact number, and supplier information. No mandatory items may be omitted.
3. Content Compliance Verification
Check the accuracy of the core hazard identifiers:
Pictograms: Use official, standardized GHS pictograms; the color scheme and style must not be modified. Avoid redundant labeling (e.g., if the "Skull and Crossbones" pictogram is used to indicate acute toxicity, do not additionally apply the "Exclamation Mark" pictogram). Ensure that pictograms are provided for *all* identified hazards;
Signal Word: The signal word must be selected based on the highest identified hazard category; for the most severe hazards, only the signal word "Danger" is permitted-incorrectly using "Warning" is an error;
Standardized Phrasing: Hazard statements and precautionary statements must utilize the standardized phrases prescribed by national standards, rather than being self-authored.
4. Information Consistency Verification
Confirm that the label accurately corresponds to the actual chemical product:
The hazard classification and hazard information displayed on the label must be in complete and exact alignment with the content of the corresponding Safety Data Sheet (SDS) for the chemical product;
If the chemical's formulation or ingredients have been updated, the label must be updated simultaneously to reflect these changes; the use of outdated information from previous versions is prohibited.
5. Special Scenario Verification
Domestic Circulation: Must bear a complete Chinese label, with all information accurately translated.
Import/Export: Must comply with the specific requirements of the destination country/region (e.g., hazard labels in the U.S. must have a side length of ≥100 mm; pictograms in Brazil must be ≥10 mm).
