ɐn ˌæntɪklˈoːɹɚɹ ɪz ɐ sˈʌbstəns jˈuːzd tə dˌiːkəmpˈoʊz ɹᵻsˈɪdʒuːəl hˌaɪpoʊklˈoːɹaɪt ɔːɹ klˈoːɹiːn ˈæftɚ klˈoːɹiːnbˈeɪst blˈiːtʃɪŋ, ɪn ˈɔːɹdɚ tə pɹɪvˈɛnt ˈɑːŋɡoʊɪŋ ɹɪˈækʃənz wɪð, ænd ðˈɛɹfoːɹ dˈæmɪdʒ tuː, ðə mətˈɪɹiəl ðɐthɐzbˌɪn blˈiːtʃt.
An antichlor is a substance used to decompose residual hypochlorite or chlorine after chlorine-based bleaching, in order to prevent ongoing reactions with, and therefore damage to, the material that has been bleached.