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Write the name and the chemical formula of the compound responsible for the smell in human sweat.
The compound responsible for the smell in human sweat is trans-3-methyl-2-hexenoic acid and its chemical formula is C7H12O2.
According to the article, how are perfumes and deodorants alike? How are they different?
According to the article, perfumes and deodorants are alike in that the goal in using them is to eliminate (or at least hide) body odor. They are different in that perfumes merely cover up the odor, while deodorants actually kill the bacteria responsible for the odor.
Name two chemicals that were used originally in deodorants.
The article mentions that baking soda and formaldehyde were used originally in deodorants.
In the answer to the previous question, what do the two substances have in common?
The common property that baking soda and formaldehyde have is that they both kill bacteria.
Why is formaldehyde no longer used in deodorants?
Studies have shown that formaldehyde is toxic and can cause cancer.
How does zinc oxide kill bacteria?
Zinc oxide does not kill bacteria by itself, “…but, similar to baking soda, it neutralizes the fatty acid microbial waste products responsible for body odor.
What’s the difference between deodorants and antiperspirants?
Deodorants kill the bacteria that cause body odor, while antiperspirants block the pores through which sweat passes, thus preventing sweating and maintaining a dry environment in which bacteria cannot thrive.
What group of compounds do almost all antiperspirants contain? How do these compounds work?
Most antiperspirants contain aluminum-based compounds. Aluminum compounds form aluminum ions (Al3+)in solution. These ions plug your sweat ducts so that you don’t perspire.
Name the two different types of sweat glands in your underarms.
The two types of sweat glands in underarms are eccrine glands and apocrine glands.
What role do solvents play in a successful underarm deodorant?
Most of the actual active ingredients of deodorants are solids, so they must be dissolved or suspended in liquids or gels to allow them to be applied easily. The solvents must evaporate easily so that they don’t leave a wet or greasy feeling and to leave behind the solid ingredient that actually deodorizes the armpit.
How do natural “deodorant crystals” work?
Natural “deodorant crystals” contain alum. When rubbed on damp skin, the alum on the surface of the crystal dissolves and is spread across the skin, leaving behind a slightly acidic solution that creates a hostile environment for bacteria.