Signal word
Danger or Warning on a chemical label: Danger for the more severe hazards, Warning for the less severe.
Definition, in the source's words
29 CFR 1910.1200(c)(opens ecfr.gov in a new tab)“Signal word means a word used to indicate the relative level of severity of hazard and alert the reader to a potential hazard on the label. The signal words used in this section are “danger” and “warning.” “Danger” is used for the more severe hazards, while “warning” is used for the less severe.”
What it means
Only these two words are used under HazCom. A label carries one signal word; when Danger applies, Warning is left off.
Example
A flammable liquid in Category 1 or 2 gets Danger; Category 3 gets Warning. Seeing Danger tells you that at least one hazard on the label is in a more severe category.
Where it appears on the exam
ASP: ASP11 Domain 2, Safety Programs and Concepts
Practice: Hazard Communication and GHS
CSP: CSP11 Domain 6, Occupational Health and Applied Science
CHST: CHST5 Domain 1, Hazard and Risk Identification and Control
Practice: Hazard Communication and GHS, Hazard Communication Training and SDS Access
Questions
- Is Caution a GHS signal word?
- No. Under 1910.1200 the signal words are Danger and Warning only.
Related
Checked 2026-10-16. Spot a problem? Email hello@passcited.com.