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Chemicals 101

Chemicals 101 is a learning resource containing general information and answers to many commonly asked questions about our chemicals. To get started, click on a topic in the list below or search our Resources & Support archives. More resources and information are also available on the Avantor website.

Ammonium Hydroxide drums bulge / expand / contract

Bulging or collapsing of ammonium hydroxide (aqua ammonia) drums is normal and no cause for alarm. Aqua ammonia solutions, at 28 – 29% concentration, boil around 85°F at atmospheric pressure. Read More...

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