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Eriochrome Black T indicator is available in 100g containers in our online shop, where you can also get discounts on bulk orders. ReAgent also offers a range of options to suit the needs of your business, from bulk quantities to custom packing and custom labelling.
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About Eriochrome Black T Indicator
Eriochrome Black T is an indicator used in many titration reactions. More specifically, it’s a complexometric indicator which means it undergoes a colour change in the presence of specific metal ions. In this case, Eriochrome Black T is able to detect calcium, aluminium and magnesium by turning from a blue/black protonated form to a red complexed form.
Chemical Properties of Eriochrome Black
- Common name: Eriochrome Black T
- Other names: Mordant Black, Solochrome Black, Chromazine Black
- Systematic name: Sodium 1-[(1-Hydroxynaphthalen-2-yl-hydrazinylidene]-6-nitro-2-naphthol-4-sulfonate
- Molecular formula: C20H12N3O7SNa
- Molar mass: 461.3 g/mol
- Appearance: Black powder
- Stability: Incompatible with strong oxidising and reducing agents
- Uses: indicator in titrations
Environmental and Health Concerns
It is important to emphasise that this compound is classed as toxic to aquatic organisms, with the potential to cause long-term damage. As such, it is essential to follow local regulations during the disposal of waste.
In addition, Eriochrome Black T is also considered an irritant to the eyes and throat and is also slightly irritating on skin contact. Affected areas should be washed with copious amounts of water and protective clothing must be worn at all times.
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|Suitability as indicator (for metal titrations)||Passes test|
|BulkCode||Hazard Statement Code||Description|
|1589||H411||Toxic to aquatic life with long lasting effects.|
|1589||H319||Causes serious eye irritation.|
|BulkCode||Precautionary Statement Code||Description|
|1589||P280||Wear protective gloves/ protective clothing/ eye protection/ face protection.|
|1589||P305+P351+P338||IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.|
|1589||P501||Dispose of contents/ container in accordance with local regulations.|
|1589||P273||Avoid release to the environment.|
|1.589||ADR/RID Shipping Name||ENVIRONMENTALLY HAZARDOUS SUBSTANCE, SOLID, N.O.S. (SODIUM 3-HYDROXY-4-((1-HYDROXY-2-NAPHTHYL)AZO)-7-NITRONAPHTHALENE-1-SULPHONATE)|
|1.589||ADR/RID Shipping Class||9|
|1.589||ADR/RID Packing Group||III|
The following files are available to download:
|Product ID||Product||post_status||Bulk||Download SDS File|
|3409||Eriochrome Black||publish||1589||https://www.chemicals.ie/uploads/documents/44 - 1589 - SDS20016.pdf|