Inside a pesticide storage building, what is the recommended temperature range?

• A. 40 to 100 degrees Fahrenheit.
• B. 60 to 80 degrees Fahrenheit.
• C. 20 to 40 degrees Fahrenheit.
• D. 90 to 120 degrees Fahrenheit.

Answer: (A)

Storing pesticides at a temperature that keeps them stable and safe is essential. A range of 40 to 100 degrees Fahrenheit provides a protective window that covers most seasonal variations and aligns with common product guidance. At temperatures below 40°F, many formulations can freeze or undergo changes in solubility or crystallization, which can affect mixing, uniformity, and effectiveness. Temperatures above 100°F can accelerate chemical degradation, increase vapor pressures, and put stress on containers, potentially causing leaks or safety issues.

A narrower range like 60–80°F is helpful but may not accommodate extreme weather conditions or label-specific requirements. Temperatures as low as 20–40°F risk freezing, while 90–120°F poses greater risk of degradation and hazards. Therefore, the general recommended storage temperature is 40 to 100 degrees Fahrenheit.