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LC1906 Eriochrome black T (C.I. 14645) indicator for complexometry |
| Order number | Packaging | Quantity | Price € |
| AC28906 | Glass bottle | 25 g | 21.6 |
| AC28906 | Glass bottle | 100 g | 27.9 |
| Product information | |
| Synonyms | Chrome black T, 2-Hydroxy-1-(1-hydroxy-2-naphthylazo)-6-nitronaphthalene-4-sulfonic acid sodium salt |
| Hill Formula | C20H12N3NaO7S |
| HS Code | 3204 19 00 |
| EC number | 217-250-3 |
| Molar mass | 461.38 g/mol |
| CAS number | 1787-61-7 |
| Chemical and physical data | |
| Solubility | 50 g/l (20 °C) |
| Molar mass | 461.38 g/mol |
| Bulk density | 400 – 600 kg/m3 |
| pH value | 3.7 (10 g/l, H2O, 20 °C) |
| Safety information according to GHS | |
| Hazard Statement(s) | H319: Causes serious eye irritation. H411: Toxic to aquatic life with long lasting effects. |
| Precautionary Statement(s) | P273: Avoid release to the environment. P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. |
| Signal Word | Warning |
| Hazard Pictogram(s) |   |
| 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. |
| Safety information | |
| R Phrase | R 36-51/53 Irritating to eyes.Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. |
| S Phrase | S 26-61 In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.Avoid release to the environment. Refer to special instructions/ Safety data sheets. |
| Categories of danger | irritant, dangerous for the environment |
| Hazard Symbol |
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| Transport information | |
| Declaration (transport by sea) IMDG-Code | UN 3077 ENVIRONMENTALLY HAZARDOUS SUBSTANCE, SOLID, N.O.S.(2-HYDROXY-1-(1-HYDROXY-2-NAPHTHYLAZO)-6-NITRONAPHTHALENE-4-SULFON IC ACID SODIUM SALT), 9, III, Marine Pollutant: P |
| Declaration (transport by air) IATA-DGR | UN 3077 ENVIRONMENTALLY HAZARDOUS SUBSTANCE, SOLID, N.O.S.(2-HYDROXY-1-(1-HYDROXY-2-NAPHTHYLAZO)-6-NITRONAPHTHALENE-4-SULFON IC ACID SODIUM SALT), 9, III |
| Toxicological data | |
| LD 50 oral | LD50 rat 17590 mg/kg |
| Specifications | |
| Identity (UV/VIS-Spectrum) | passes test |
| Appearance | Dark brown to black-brown powder, eventually with granular parts. |
| Clarity of solution | passes test |
| Absorption maximum λ max (buffer pH 10.0) | 612 – 616 nm |
| Spec. Absorptivity A 1%/1cm (λ7m7ax; 0.02 g/l; buffer pH 10.0; calc. on dried substance) | 400 – 510 |
| Loss on drying (110 °C) | ≤ 7 % |
| Suitability as indicator – for complexometric titration, ACS |
passes test |
| – Reag. Ph. Eur. | passes test |
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