In Vanaparva of Mahābhārata (Mahabharata), the priest Dhaumya chronicles one hundred and eight names of Sūrya (Surya); one of them is Aṅgāraka (Angaraka).

Mahābhārata (Kinjawadekar)(3.3.17)
Mahābhārata Vols. 1-43 (Siddhāntabāgīśa)(3.3.17)