Amaranth

CAS: 915-67-3

Category: Azo dye

PurityFood Grade ≥85%, Cosmetic Grade ≥90%, Reagent Grade ≥95%, Technical Grade ≥80%.
Molecular FormulaC20H11N2Na3O10S3
Molecular Weight604.47
Appearancereddish-brown to dark red crystalline powder
Packaging25kg/fiber drum or 1kg/aluminum foil bag.
Testing IndicatorsAppearance — Visual inspection; Identification — UV (520 nm); Purity — HPLC; Dye content — Spectrophotometry; Heavy metals — ICP-MS; Chloride — Turbidimetry; Sulfate — Barium precipitation; Microbial limits — Filtration; Subsidiary dyes — TLC.
Storage NotesStored in a well-closed container in a cool, dry, and dark place, away from strong oxidizing agents.
Lead Time
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days
Used as a dye intermediate and as a colorant in various industrial applications and research.