Ponceau 4R (Crimson 4R, cochineal liab A, Ponceau 4R, Cochineal Liab A, E124) yog xim liab. Siv cov tshuaj formula C20H11N2Na3O10S.
Nws yog ntxiv rau zaub xam lav hnav khaub ncaws, khoom qab zib toppings, cupcakes, biscuits, tsev cheese khoom, salami.
Kev pub noj txhua hnub (FAO / LEEJ TWG) yog 4 mg / kg ntawm lub cev hnyav.
Carcinogen - tuaj yeem ua rau mob qog noj tau. Nws muaj peev xwm ua rau muaj kev tsis haum tshuaj nyob rau hauv cov neeg rhiab ntawm tshuaj aspirin, thiab ua rau kev tawm tsam ntawm kev txhawm chim ntawm asthmatics.
Nws tau tso cai hauv peb lub teb chaws thiab European lub teb chaws. Hauv qee lub tebchaws (suav nrog Tebchaws Meskas, Norway thiab Finland), nws tau teev npe tias yog cov kabmob carcinogen.