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Acid blue is a dark bluish synthetic triphenylmethane dye. It used as a food coloring. The color of the dye is pH-dependent. The structure is also redox-sensitive, changing from a reduced yellow form to an oxidized red form in solution. It is usable as a reversible redox indicator in some analytical methods.

| Pack Size | Price | USA Warehouse | Global Warehouse | Quantity |
|---|---|---|---|---|
| 25 mg | $1,520 | 2-4 weeks | 2-4 weeks | |
| 50 mg | $1,980 | 2-4 weeks | 2-4 weeks | |
| 100 mg | $2,500 | 2-4 weeks | 2-4 weeks |
| Description | Acid blue is a dark bluish synthetic triphenylmethane dye. It used as a food coloring. The color of the dye is pH-dependent. The structure is also redox-sensitive, changing from a reduced yellow form to an oxidized red form in solution. It is usable as a reversible redox indicator in some analytical methods. |
| Synonyms | NSC 5010, L-Blau 3, Food Blue 3, C.I. 42051, Blue ZN 3, Acid blue 3 |
| Molecular Weight | 1159.42 |
| Formula | C54H62CaN4O14S4 |
| Cas No. | 3536-49-0 |
| Relative Density. | no data available |
| Storage | keep away from direct sunlight | Powder: -20°C for 3 years | In solvent: -80°C for 1 year | Shipping with blue ice/Shipping at ambient temperature. |
| Solubility Information | DMSO: Soluble |
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