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Alizarin Yellow R
Chemical Name: 5-[(p-nitrophenyl)azo]salicylic acid, sodium salt
Molec. Formula: C13H8O5N3Na
Molec. Weight: 309.20
Properties: brownish yellow crystal or powder, soluble in water; brownish yellow aqueous solution
Applications: acid/base indicator; colorant for metal
Specifications: chemical reagent, indicator
| Appearance: |
brown powder or
crystal |
| pH range, color change: |
10.0 (yellow) - 12.0
(red) |
| Ash (sulfate), %: |
18-24 |
| solvation test in alcohol: |
pass |
| solvation test in water: |
pass |
| sensitivity: |
pass |
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