send us an inquiry |
LC1907 Eriochrome blue-black B (C.I. 14640)metal indicator |
Order number | Packaging | Quantity | Price € |
AC28907 | Glass bottle | 25 g | 22.5 |
Product information | |
Synonyms | 2-Hydroxy-1-(1-hydroxy-2-naphthylazo)-naphthalene-4-sulfonic acid sodium salt |
Hill Formula | C20H13N2NaO5S |
HS Code | 3204 19 00 |
EC number | 222-639-6 |
Molar mass | 416.39 g/mol |
CAS number | 3564-14-5 |
Chemical and physical data | |
Solubility | 20 g/l (20 °C) |
Molar mass | 416.39 g/mol |
Bulk density | 540 kg/m3 |
pH value | 9.5 (10 g/l, H2O, 20 °C) |
Safety information according to GHS | |
Hazard Statement(s) | H319: Causes serious eye irritation. |
Precautionary Statement(s) | 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) | ![]() |
RTECS | QK2195000 |
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 Irritating to eyes. |
Categories of danger | irritant |
Hazard Symbol |
|
Toxicological data | |
LD 50 oral | LD50 rat > 5000 mg/kg |
Specifications | |
Identity (UV/VIS-Spectrum) | passes test |
Absorption maximum λ max (buffer pH 10.0) | 634 – 644 nm |
Spec. Absorptivity A 1%/1cm (λ7m7ax; 0.025 g/l; buffer pH 10.0; calculated on anhydrous substance) | 220 – 320 |
Loss on drying (110 °C) | ≤ 10 % |
Suitability as indicator (for metal titration) | passes test |
![]() |