CH22

CH22 is a designation that can refer to several different entities, most notably a class of steam locomotives. The CH22 steam locomotive class was built by the Chicago, Burlington and Quincy Railroad (CB&Q) between 1930 and 1940. These locomotives were designed for freight service and were a significant part of the CB&Q's motive power during that era. They were characterized by their 4-6-4 wheel arrangement, also known as a Hudson type, and were known for their power and efficiency. Several CH22 locomotives have been preserved, with examples such as CB&Q 3001 and CB&Q 3002 being notable.

Beyond locomotives, CH22 can also be a laboratory code or project name within research or industrial settings. Without further context, its specific meaning in such instances remains indeterminate. For example, it might designate a particular chemical compound, a specific experiment, or a developmental stage of a product. The designation CH22 is often used as a shorthand within specialized fields to avoid lengthy descriptions. Its precise definition is therefore dependent on the context in which it is used.