1.03168
Eriochrome blue-black B (C.I. 14640)
metal indicator
Synonym(s):
Eriochrome blue-black B (C.I. 14640), 2-Hydroxy-1-(1-hydroxy-2-naphthylazo)-naphthalene-4-sulfonic acid sodium salt
Select a Size
| Size/SKU | Availability | Price |
|---|---|---|
25 g | Estimated to ship onSeptember 04, 2026 | $65.80 $49.35 |
About This Item
$49.35
List Price$65.80Save 25%Estimated to ship onSeptember 04, 2026Details
Product Name
Eriochrome blue-black B (C.I. 14640), metal indicator
Quality Segment
form
solid
potency
>5000 mg/kg LD50, oral (Rat)
loss
≤10% loss on drying, 110°C
pH
9.5 (20 °C, 10 g/L in H2O)
solubility
20 g/L
bulk density
540 kg/m3
λmax
634-644 nm (buffer pH 10.0)
storage temp.
15-25°C
SMILES string
[Na+].[S](=O)(=O)([O-])C1=CC(=O)\C(=N/Nc3c(c4c(cc3)cccc4)O)\c2c1cccc2
InChI
1S/C20H14N2O5S.Na/c23-17-11-18(28(25,26)27)14-7-3-4-8-15(14)19(17)22-21-16-10-9-12-5-1-2-6-13(12)20(16)24;/h1-11,21,24H,(H,25,26,27);/q;+1/p-1/b22-19-;
InChI key
YRFCCVCSEVISHI-GXTSIBQPSA-M
Application
- New palladium-oxazoline complexes: Synthesis and evaluation of the optical properties and the catalytic power during the oxidation of textile dyes.: This study examines new palladium-oxazoline complexes, focusing on their synthesis and evaluation of their optical properties and catalytic power in the oxidation of textile dyes, including Eriochrome Blue-Black B (Hassani et al., 2015).
- Wet air and catalytic wet air oxidation of several azodyes from wastewaters: the beneficial role of catalysis.: This research explores the application of wet air and catalytic wet air oxidation processes to degrade various azo dyes in wastewaters, highlighting the positive impact of catalysis in enhancing degradation efficiency, potentially applicable to Eriochrome Blue-Black B (Rodríguez et al., 2009).
Analysis Note
Absorption maximum λmax. (buffer pH 10.0): 634 - 644 nm
Spec. Absorptivity A 1%/1cm (λmax; 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
1 of 1
This Item | |||
|---|---|---|---|
| Quality Level 200 | Quality Level 200 | Quality Level 200 | Quality Level 200 |
| storage temp. 15-25°C | storage temp. 15-25°C | storage temp. 2-30°C | storage temp. room temp |
| potency >5000 mg/kg LD50, oral (Rat) | potency 17590 mg/kg LD50, oral (Rat) | potency - | potency - |
| pH 9.5 (20 °C, 10 g/L in H2O) | pH 3.7 (20 °C, 10 g/L in H2O) | pH 3.6 (20 °C, 10 g/L in H2O) | pH - |
| solubility 20 g/L | solubility 50 g/L | solubility - | solubility water: 1 mg/mL, slightly hazy, orange |
| loss ≤10% loss on drying, 110°C | loss ≤7% loss on drying, 110°C | loss - | loss - |
signalword
Warning
hcodes
Hazard Classifications
Eye Irrit. 2
Storage Class
11 - Combustible Solids
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
Certificates of Analysis (COA)
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