It was used in the final version of the Unified Northern Alphabet, approved in 1932, for Saami, Selkup, Khanty, Evenki, Even, Nanai, Udege, Chukchi, Koryak and Nivkh languages [1] to denote the sound [t͡ʃ], although in some of these languages in practice, several other alphabets were used.

Also, this letter was used in the Latinized Shugnan alphabet (1931-1939) to denote the sound [t͡s].

[2][3][4] The United States Federal Geographic Data Committee uses the capital barred C to represent the Cambrian Period in geologic history.

[5] In phonetic transcription, the lowercase barred C may denote a voiceless palatal fricative (IPA: [ç]), and in 1963, it was proposed as a symbol for a voiceless flat postalveolar fricative [ɻ̊˔] by William A.

[6] In 19th-century American English dictionaries such as those by Noah Webster and William Holmes McGuffey, the letter was used to denote ⟨c⟩ pronounced as /k/.