Utoto wa iron oxide umagwiritsidwa ntchito kwambiri mu zophimba, utoto, ndi inki chifukwa cha kusawononga, kusatulutsa magazi, mtengo wotsika, komanso kuthekera kopanga mitundu yosiyanasiyana. Zophimba zimapangidwa ndi zinthu zopangira filimu, utoto, zodzaza, zosungunulira, ndi zowonjezera. Zapangidwa kuchokera ku zophimba zochokera ku mafuta mpaka zophimba zopangidwa ndi resin, ndipo zophimba zosiyanasiyana sizingathe kuchita popanda kugwiritsa ntchito utoto, makamaka utoto wa iron oxide, womwe wakhala mtundu wofunikira kwambiri wa utoto mumakampani ophimba.

Mitundu ya utoto wa iron oxide yomwe imagwiritsidwa ntchito popanga utoto ndi monga chikasu chachitsulo, chofiira chachitsulo, bulauni chachitsulo, chakuda chachitsulo, mica chitsulo oxide, chobiriwira chachitsulo chowonekera, chofiira chachitsulo chowonekera, ndi zinthu zowala, zomwe chikasu chofiira chachitsulo ndicho chofunikira kwambiri pamitundu yambiri komanso yosiyanasiyana.
Chitsulo chofiira chachitsulo chili ndi mphamvu yabwino kwambiri yolimbana ndi kutentha, sichisintha mtundu pa 500 ℃, ndipo sichisintha kapangidwe ka mankhwala ake pa 1200 ℃, zomwe zimapangitsa kuti chikhale chokhazikika kwambiri. Chimatha kuyamwa kuwala kwa ultraviolet mu dzuwa, kotero chimakhala ndi mphamvu yoteteza pa utoto. Sichimasungunuka ndi asidi, alkalis, madzi, ndi zosungunulira, zomwe zimapangitsa kuti chikhale cholimba komanso cholimba.

Kuchuluka kwa iron oxide wofiira ndi 0.2 μ M, malo enieni a pamwamba ndi kuyamwa kwa mafuta nawonso ndi akulu. Kuchuluka kwa iron oxide kukawonjezeka, mtunduwo umachoka pa mtundu wofiira wa mtundu wa purple, ndipo malo enieni a pamwamba ndi kuyamwa kwa mafuta kumakhala kochepa. Kuchuluka kwa iron oxide kumagwiritsidwa ntchito kwambiri mu zophimba zotsutsana ndi dzimbiri zomwe zimagwira ntchito yotsutsana ndi dzimbiri. Chinyezi chomwe chili mumlengalenga sichingalowe mu chitsulo, ndipo chimatha kuwonjezera kuchuluka ndi mphamvu yamakina ya zophimbazo.
Mchere wofiira wosungunuka ndi madzi achitsulo womwe umagwiritsidwa ntchito mu utoto woletsa dzimbiri uyenera kukhala wochepa, zomwe zimathandiza pakukweza magwiridwe antchito oletsa dzimbiri, makamaka pamene ma chloride ions akuwonjezeka, madzi amalowa mosavuta mu utotowo, ndipo nthawi yomweyo, umathandiziranso dzimbiri lachitsulo.

Chitsulo chimakhudzidwa kwambiri ndi asidi, kotero ngati PH ya utomoni, pigment kapena solvent mu utoto ili pansi pa 7, zimakhala zosavuta kukulitsa dzimbiri la chitsulo. Pambuyo pa nthawi yayitali padzuwa, utoto wofiira wachitsulo umatha kupangika ufa, makamaka utoto wofiira wachitsulo wokhala ndi Granularity yaying'ono umapangika ufa mwachangu, kotero utoto wofiira wachitsulo wokhala ndi Granularity yayikulu uyenera kusankhidwa kuti ukhale wolimba kukana nyengo, komanso ndikosavuta kuchepetsa kuwala kwa utoto.

Kusintha kwa mtundu wa topcoat nthawi zambiri kumachitika chifukwa cha kugwedezeka kwa chimodzi kapena zingapo mwa zigawo za pigment. Kunyowa kochepa kwa pigment ndi zinthu zambiri zonyowa nthawi zambiri zimakhala zifukwa za kugwedezeka. Pambuyo pa calcination, pigment imakhala ndi chizolowezi chachikulu cha kugwedezeka. Chifukwa chake, kuti muwonetsetse kuti topcoat imakhala yofanana komanso yofanana, ndibwino kusankha kupanga chitsulo chofiira chonyowa. Pamwamba pake popangidwa ndi singano yofiira yachitsulo chofiira imakhala ndi mwayi wogwidwa ndi mercerization, ndipo mikwingwirima yomwe imapangidwa panthawi yopaka utoto imawonedwa kuchokera mbali zosiyanasiyana, ndi mphamvu zosiyanasiyana zamitundu, ndipo imagwirizana ndi zizindikiro zosiyanasiyana za refractive za makristasi.

Poyerekeza ndi zinthu zachilengedwe, iron oxide red yopangidwa ndi zinthu zachilengedwe imakhala ndi kukhuthala kwakukulu, Granularity yaying'ono, kuyera kwambiri, mphamvu yabwino yobisala, kuyamwa mafuta ambiri komanso mphamvu yamphamvu yopaka utoto. Mu mitundu ina ya utoto, iron oxide red yopangidwa ndi zinthu zachilengedwe imagawidwa ndi zinthu zopangidwa, monga iron oxide red alkyd primer yomwe imagwiritsidwa ntchito popaka pamwamba pa Ferrous monga magalimoto, makina ndi zida.