Other names: 5,5 '- Indigo disulfonic acid disodium salt; isatin; Acid indigo; Soluble indigo; Indigo carmine; Sodium indigo disulfonate; Acid blue 74; Food blue 1; Indigo rouge; Indigo and magenta; Indigo carmine disodium salt; Rhodiola carmine; Edible indigo; Indigo crimson; Indigo-5,5 '- disulfonic acid sodium salt; 2 (1,3-dihydro-3-oxo-5-sulfo-2h-indole-2-subunit) - 2,3-dihydro-3-oxo-1h-indole-5-sulfonic acid disodium salt; Sodium indigo disulfonate; Edible pigment blue No. 2

CAS No.: 860-22-0

C16H8N2Na2O8S2=466.36

Grade: BS

Biological staining test: qualified

Physicochemical properties (the following information is for reference only): dark blue powder, with copper like luster, very sensitive to light and oxidants. At 25 ℃, 1g is soluble in 100ml of water, slightly soluble in ethanol and almost insoluble in other organic solvents. It is easy to fade by nitric acid and chlorate, and its aqueous solution can also fade after long storage.

Usage: This product is only for scientific research, not for other purposes. (the following uses are for reference only) staining of Nikki's corpuscles and nuclei; Determination of cerium and manganese, determination of nitrate, sulfite, chlorate and milk; Acid base indicator, redox indicator

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