What are hygroscopic substances known for?

Hygroscopic substances are primarily known for their ability to remove moisture from the air. This characteristic allows them to absorb water vapor, making them useful in various applications such as humidity control, preserving food, and in some industrial processes. When hygroscopic materials come into contact with water vapor, they attract and hold onto the moisture, which can lead to a decrease in relative humidity in their surroundings.

In nature, common hygroscopic substances include salts, sugars, and certain kinds of silica gel. Their ability to retain moisture is not only important in various chemical and physical processes but also plays a critical role in environments where controlling humidity is essential. This property is vital in understanding how certain materials behave in different atmospheric conditions and can influence everything from product formulation to storage practices.