metanil yellow

met·a·nil yel·low

(met'ă-nil yel'ō), [C.I. 13065]
A monoazo acid dye, C18H14N3O3SNa, used as a cytoplasmic and connective tissue stain.
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Tenders are invited for Supply of Chemicals -Picric Acid Solum, Diazo Reagent A, Diazo Reagent B, ISO Octane (2,2,4-Trimenthylpentane), Ethyl Acetate, Zinc Oxide Emplura, Isolation & Identification of oil soluble colour, i) Ammonia, All Solution of Reference colour:- Sudan-1, Sudan III, Sudan IV, Quinoline Yellow, Metanil Yellow, Methyl Orange (PH Indicator), Silica Gel G for TLC, Silver Nitrate Extra, Sucrose, Boric Acid Exrapure, Methanol, Buffer Tablet PH-4, Buffer Tablet PH-7,
Metanil Yellow -- a non- permitted food colour -- was commonly used in snacks.
However, in actual practice, other nonpermitted synthetic dyes like auramine, metanil yellow, lead chromate, rhodamine, sudan-3 and 4, orange-2 and Malachite green, which pose serious health hazards, as they are mutagenic and potential carcinogens, are being used as food colours in the market.
Metanil yellow, the commonest non-edible chemical dye, widely used in food items like ladooscauses insufficient oxygen supply to skin and mucus membranes along with degenerative changes in the stomach, liver, kidneys, abdomen and testes.
Gonad samples were prepared for histological examination with a modification of the periodic acid Schiff's (PAS) stain for glycol-methacrylate sections and with Weigert's iron-hematoxylin as a nuclear stain and metanil yellow as a counterstain (Quintero-Hunter et al.