| 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) | 510 - 517 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 (λ1max; 0.01 g/l; buffer pH 4.3; calc. on dried substance) | 135 - 180 |
| Spec. Absorptivity A 1%/1cm (λ2max; 0.01 g/l; buffer pH 6.3; calc. on dried substance) | 145 - 210 |
| Spec. Absorptivity A 1%/1cm (λ3max; 0.01 g/l; buffer pH 9.4; calc. on dried substance) | 170 - 230 |
| Spec. Absorptivity A 1%/1cm (λ4max; 0.01 g/l; buffer pH 12.0; calc. on dried substance) | 340 - 520 |
| Loss on drying (110 °C) | ≤ 10 % |
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Key Spec Table
| CAS # | EC Number | Hill Formula | Molar Mass |
|---|---|---|---|
| 130-22-3 | 204-981-8 | C₁₄H₇NaO₇S | 342.26 g/mol |
| Description | |
|---|---|
| Catalogue Number | 106278 |
| Product Information | |
|---|---|
| CAS number | 130-22-3 |
| EC number | 204-981-8 |
| Hill Formula | C₁₄H₇NaO₇S |
| Molar Mass | 342.26 g/mol |
| HS Code | 3204 12 00 |
| Structure formula Image | |
| Applications | |
|---|---|
| Application | Alizarin red S mono sodiumsalt (C.I. 58005) for analysis and indicator. CAS 130-22-3, molar mass 342.26 g/mol. MSDS and product information below. |
| Safety Information according to GHS | |
|---|---|
| RTECS | CB1095300 |
| Storage class | 10 - 13 Other liquids and solids |
| 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. |
| Storage and Shipping Information | |
|---|---|
| Storage | Store at +5°C to +30°C. |
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