CHN

CHN is the ISO 3166-1 alpha-3 code used to denote the People's Republic of China in international data standards, statistics, and identifiers. It serves as a concise country designation in datasets, shipping, and administrative records, with the corresponding alpha-2 code CN and various organization-specific codes building on the same national reference.

In sports, CHN functions as an official country code for China. The International Olympic Committee uses CHN to represent the Chinese team in the Olympic Games, and many other sports federations, including FIFA and continental confederations, likewise use CHN to indicate China in competitions and rankings.

In chemistry, CHN commonly refers to the elemental components carbon, hydrogen, and nitrogen. CHN analysis is a standard laboratory method for determining the percentages of these elements in a sample, typically performed with a combustion analyzer that measures the resulting CO2, H2O, and N-containing gases to yield C, H, and N content.

Beyond these uses, CHN can appear as an abbreviation in various domains where three-letter codes are employed. Its meaning is highly context-dependent, often tied to China-related coding or to the carbon-hydrogen-nitrogen framework in analytical chemistry.