I think what is boils down to is how does SQF define a hazardous chemical. A quick google AI search summarized it fairly well (see red text below). But then you have to go back and read the section. Focus on answering the requirements (I use the SQF Edition 9 Checklist to get the specifics) and see if you can generalize how you comply with the SQF code based on the hazard type.
While SQF (Safe Quality Food) isn't a federal agency defining chemicals, it aligns with global standards, meaning a hazardous chemical under SQF is broadly any substance posing physical or health risks (like toxic, flammable, corrosive, sensitizing), requiring strict management (handling, labeling, storage) to protect consumers, staff, and the environment, often following OSHA's HCS (Hazard Communication Standard) or similar GHS/national rules, to prevent contamination or injury in food/beverage production.
Key Characteristics of Hazardous Chemicals (SQF Context):
Physical Hazards: Flammable, combustible, explosive, reactive, or generates pressure.
Health Hazards: Toxic, corrosive, irritant, strong sensitizer, causes serious illness (acute/chronic).
Broad Scope: Includes cleaning agents, pesticides, additives, lubricants, and naturally occurring toxins exceeding safe levels.
SQF's Focus (Beyond Definition):
Control: Identifying, documenting, and controlling these chemicals (e.g., pest control, sanitation).
Management: Ensuring proper storage, handling, labeling, and training (MSDS/SDS availability).
Risk Mitigation: Preventing chemical contamination of food products and ensuring worker safety.
In essence, if a chemical can harm someone (worker or consumer) or the food, it's "hazardous" and needs rigorous SQF control measures, often guided by regulations like OSHA's Hazard Communication Standard.