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ALIZARINE RED S AR C.I.No. 58005 Acid base indicator use in analysis of metals Sodium Alizarine Sulphonate
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Specification
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General
Description
| Article No. | 00861 | Grade | AR |
| Purity | CAS No. | 130-22-3 | |
| Molecular Formula | C14H7NaO7S | Molecular Weight | 342.3 |
| H.S. Code | 2914.7990 | Shelf Life | 60 Months |
Physical Properties
| Physical state at 20 °C | Solid | Colour | Red 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 | ||||||
Specifications
| Appearance | Yellow to orange to brown 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 (0.1 mol/L in NaOH) λmax1 | 553-559 nm | Absorption maxima (0.1 mol/L in NaOH) λmax2 | 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-P302+P352-P305+P351+P338
Signal Word: Warning
Hazardous Statement: H315-H319-H335
Precaution Statement: P261-P302+P352-P305+P351+P338
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