I-Chrome yellow, eyaziwa ngamakhemikhali ngokuthi i-lead chromate (PbCrO₄), iyi-pigment ekhanyayo negqamile edume kakhulu ngokomlando ngombala wayo obukhali. Yaqala ukwenziwa ngo-1809 yisazi semithi saseFrance uLouis Nicolas Vauquelin, yathola ukuthandwa ngokushesha njengendlela engabizi kakhulu esikhundleni se-pigment yendabuko ephuzi njenge-orpiment. Igama le-pigment livela ku-chromium, isici esatholakala ngesikhathi sokuhlolwa kukaVauquelin ku-crocoite yamaminerali, umthombo wemvelo we-chromate ye-lead.
Ukukhiqizwa kophuzi we-chrome kuhilela inqubo yokwehliswa kwamakhemikhali. Usawoti we-lead usabela ngamakhemikhali e-chromate noma e-dichromate esixazululweni samanzi, wakha izinhlayiya ezincane ze-chromate ye-lead. Ngokulungisa izimo zokusabela, abakhiqizi bangakhiqiza imibala ehlukahlukene, kusukela kophuzi ophuzi we-primrose kuya kowolintshi ojulile, ocebile. Ubukhulu bezinhlayiya ezincane buveza imibala ekhanyayo, kuyilapho izinhlayiya ezinkulu zidala imibala emnyama. Ukuze kuthuthukiswe ukuzinza nokusebenza, ukwelashwa kwendawo kuvame ukusetshenziswa, kuvikela umbala ekuwohlokeni kwemvelo.
Isikhathi sokuthunyelwe: Juni-13-2025