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Pack Size | Price | Availability | Quantity |
---|---|---|---|
5 mg | Inquiry | Backorder | |
50 mg | Inquiry | Backorder |
Description | Hydroxy naphthol blue disodium, an azo dye and metal indicator for calcium as well as a colorimetric reagent for alkaline earth metal ions (λmax = 650 nm), exhibits a reddish-pink color in calcium ion solutions at pH 12 to 13 and transitions to deep blue when disodium EDTA is introduced [1]. |
Molecular Weight | 598.49 |
Formula | C20H12N2Na2O11S3 |
Cas No. | 165660-27-5 |
Storage | keep away from direct sunlight | Powder: -20°C for 3 years | In solvent: -80°C for 1 year |
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