Ethephon is a plant growth regulator used to promote ripening in crops such as bananas, tomatoes, and apples. However, it is important to ensure that the ethephon used is free from impurities, as these can affect its effectiveness and safety. Ethephon impurities can include residual solvents, heavy metals, and other contaminants that may be harmful to humans or the environment. Therefore, it is crucial to carefully monitor and control the quality of ethephon products to ensure their purity
