Back
| Name | Eriochrome Black T |
| Color | Black |
| Chemical Formula | C20H12N3NaO7S |
| CAS Number | 1787-61-7 |
| Appearance | Powder |
| Solubility | Soluble in water |
| Usage | Used as an indicator in complexometric titrations |
| Purity | Reagent Grade, Ph. Eur. |
| Storage | Store in a cool, dry place |
| Shelf Life | At least 2 years |
| Packaging | Available in various pack sizes |
FAQ
What is Eriochrome Black T (C.I. 14645) (Reag. Ph. Eur.) used for in analysis,
ACS?
Eriochrome Black T (C.I. 14645) (Reag. Ph. Eur.) is commonly used as a complexometric indicator in analytical chemistry, particularly in titrations involving metal ions such as calcium, magnesium, and zinc. It helps determine the endpoint of the titration by changing color in the presence of these metal ions.
How does Eriochrome Black T (C.I. 14645) (Reag. Ph. Eur.) work as an indicator?
Eriochrome Black T (C.I. 14645) (Reag. Ph. Eur.) functions as a chelating agent, forming stable complexes with metal ions. In its free form, it appears red, but upon complexation with metal ions, it changes to a blue color. This color change serves as a visual indicator for the endpoint of the titration.
What are the advantages of using Eriochrome Black T (C.I. 14645) (Reag. Ph. Eur.) in titrations?
Eriochrome Black T (C.I. 14645) (Reag. Ph. Eur.) offers several benefits in titrations. It has a sharp color change from red to blue at the endpoint, making it easy to detect. It also forms stable complexes with metal ions, improving the accuracy and precision of the titration results. Additionally, it is a versatile indicator suitable for a range of metal ion titrations.
Are there any limitations or considerations when using Eriochrome Black T (C.I. 14645) (Reag. Ph. Eur.) as an indicator?
While Eriochrome Black T (C.I. 14645) (Reag. Ph. Eur.) is a popular choice for metal ion titrations, there are some limitations to consider. It may not be suitable for titrations involving certain metal ions or in acidic conditions, as the indicator can exhibit poor solubility or stability. It is important to optimize the titration conditions and select the appropriate indicator for the specific analysis.
How should Eriochrome Black T (C.I. 14645) (Reag. Ph. Eur.) be stored and handled to ensure optimal performance?
Eriochrome Black T (C.I. 14645) (Reag. Ph. Eur.) should be stored in a dry, dark place away from direct sunlight and moisture to prevent degradation of the indicator. It is important to handle the substance with care, using proper personal protective equipment as it may be harmful if swallowed or inhaled. Before use, check for any signs of deterioration or contamination, and discard if necessary to ensure accurate analysis.
Eriochrome Black T (C.I. 14645) (Reag. Ph. Eur.) is commonly used as a complexometric indicator in analytical chemistry, particularly in titrations involving metal ions such as calcium, magnesium, and zinc. It helps determine the endpoint of the titration by changing color in the presence of these metal ions.
How does Eriochrome Black T (C.I. 14645) (Reag. Ph. Eur.) work as an indicator?
Eriochrome Black T (C.I. 14645) (Reag. Ph. Eur.) functions as a chelating agent, forming stable complexes with metal ions. In its free form, it appears red, but upon complexation with metal ions, it changes to a blue color. This color change serves as a visual indicator for the endpoint of the titration.
What are the advantages of using Eriochrome Black T (C.I. 14645) (Reag. Ph. Eur.) in titrations?
Eriochrome Black T (C.I. 14645) (Reag. Ph. Eur.) offers several benefits in titrations. It has a sharp color change from red to blue at the endpoint, making it easy to detect. It also forms stable complexes with metal ions, improving the accuracy and precision of the titration results. Additionally, it is a versatile indicator suitable for a range of metal ion titrations.
Are there any limitations or considerations when using Eriochrome Black T (C.I. 14645) (Reag. Ph. Eur.) as an indicator?
While Eriochrome Black T (C.I. 14645) (Reag. Ph. Eur.) is a popular choice for metal ion titrations, there are some limitations to consider. It may not be suitable for titrations involving certain metal ions or in acidic conditions, as the indicator can exhibit poor solubility or stability. It is important to optimize the titration conditions and select the appropriate indicator for the specific analysis.
How should Eriochrome Black T (C.I. 14645) (Reag. Ph. Eur.) be stored and handled to ensure optimal performance?
Eriochrome Black T (C.I. 14645) (Reag. Ph. Eur.) should be stored in a dry, dark place away from direct sunlight and moisture to prevent degradation of the indicator. It is important to handle the substance with care, using proper personal protective equipment as it may be harmful if swallowed or inhaled. Before use, check for any signs of deterioration or contamination, and discard if necessary to ensure accurate analysis.
