Alizarine Red S AR (Sodium alizarine sulphonate)
C.I.No. 58005 Acid base indicator use in analysis of metals
Sodium Alizarine Sulphonate
Product Code. |
00101 |
Grade |
|
Purity |
CAS No. |
130-22-3 | |
Molecular Formula |
C14H7NaO7S |
Molecular Weight |
342.30 |
H.S.Code |
2914.79900 |
Shelf Life |
60 Months |
Physical Properties
| Physical state at 20 °C |
Solid |
Colour |
Yellow coloured powder |
Melting point/ Freezing point [°C] |
430°C |
| Boiling point [°C] |
287 - 289°C |
Initial boiling point [°C] |
287°C |
Final boiling point [°C] |
289°C |
| Solubility in water [% weight] |
Sparingly soluble in water |
Packaging
Specification
| Appearance | Yellow coloured powder |
| Dye content | Min 70.0% |
| Transition range | |
| pH 4.3-6.3 | Yellow-Pink |
| pH 9.4-12.0 | Brown orange-Violet |
| Solubility (0.1% in water) | Clear solution |
| Absorption maxima in 0.1 N NaOH | 553-559 nm |
| Absorption maxima in 0.1 N NaOH | 592-599 nm |
| Absorptivity (A1%/1cm at 556 nm ) | Min 350.0 |
| Absorptivity (A1%/1cm at 595 nm ) | Min 325.0 |
| Loss on drying (at 110°C) | Max 5.0% |
Safety Information and Hazard Symbols
Symbol: GHS07
Signal Word: Warning
Hazardous Statement: H315-H319-H335
Precaution Statement: P261-P305 + P351 + P338