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02/04/2025
When poured into fire, some powdered detergents can produce a blue flame due to the presence of copper sulfate or borates, which are commonly used as brightening agents. Copper compounds burn with a bright blue hue, while borates can create a greenish-blue effect. This reaction occurs because these chemicals alter the flame’s energy emission, producing different wavelengths of light. However, burning detergents can release toxic fumes, so this experiment should only be done outdoors in a well-ventilated area. For a stronger blue flame, pure copper sulfate (found in some fertilizers or root killers) is a safer and more effective alternative.
