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LC261 Alizarin red S mono sodiumsalt (C.I. 58005)GR for analysis and indicator |
| Order number | Packaging | Quantity | Price € |
| AC27261 | Glass bottle | 25 g | 32.85 |
| AC27261 | Glass bottle | 100 g | 70.65 |
| Product information | |
| Synonyms | C.I. 58005, Alizarin Rot S |
| Hill Formula | C14H7NaO7S |
| HS Code | 3204 12 00 |
| EC number | 204-981-8 |
| Molar mass | 342.26 g/mol |
| CAS number | 130-22-3 |
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Chemical and physical data |
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| Solubility | (20 °C) soluble |
| Molar mass | 342.26 g/mol |
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Safety information |
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| RTECS | CB1095300 |
| Storage class | 10 – 13 Other liquids and solids |
| WGK | WGK 2 water endangering |
| Disposal | 3 Relatively unreactive organic reagents should be collected in container A. If halogenated, they should be collected in container B. For solid residues use container C. |
| Specifications | |
| Identity (UV/VIS-Spectrum) | passes test |
| 1st transition range | pH 4.3 – pH 6.3 Lightly yellow – pink |
| 2nd transition range | pH 9.4 – pH 12.0 Brown-orange – violet |
| Absorption maximum λ 1 (buffer pH 4.3) | 418 – 424 nm |
| Absorption maximum λ 2 (buffer pH 6.3) | 514 – 520 nm |
| Absorption maximum λ 3 (buffer pH 9.4) | 444 – 450 nm |
| Absorption maximum λ 4 (buffer pH 12.0) | 554 – 558 nm |
| Spec. Absorptivity A 1%/1cm – λ17m7ax; 0.01 g/l; buffer pH 4.3; calc. on dried substance |
135 – 180 |
| – λ27m7ax; 0.01 g/l; buffer pH 6.3; calc. on dried substance | 160 – 210 |
| – λ37m7ax; 0.01 g/l; buffer pH 9.4; calc. on dried substance | 170 – 230 |
| – λ47m7ax; 0.01 g/l; buffer pH 12.0; calc. on dried substance | 390 – 520 |
| Loss on drying (110 °C) | ≤ 10 % |