Eriochrome Black T - 10g
Other Names: Mordant Black 11, Solochrome Black T
CAS Number: 1787-61-7
Sum Formula: C20H12N3NaO7S
Molar Mass: 461.38 g/mol
Appearance: Dark violet to black powder
Eriochrome Black T is an azo dye and complexometric indicator commonly used in analytical chemistry. It is particularly useful for the detection of metal ions, especially in complexometric titrations involving EDTA.
Applications
Analytical Chemistry: Used as an indicator in complexometric titrations to detect metal ions such as calcium and magnesium.
Complex Formation: Forms colored complexes with metal ions, aiding in quantification and detection in aqueous solutions.
Dye Chemistry: Occasionally employed in formulations for scientific staining or testing applications.
Safety
Signal Word: Warning
Hazard Statements:
H319: Causes serious eye irritation.
H411: Toxic to aquatic life with long lasting effects.
Precautionary Statements:
P264: Wash skin thoroughly after handling.
P273: Avoid release to the environment.
P280: Wear eye protection/face protection.
P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing.
P337 + P313: If eye irritation persists: Get medical advice/attention.
P391: Collect spillage.
First Aid Measures
Eye Contact: Rinse cautiously with water for several minutes. Remove contact lenses if present. Seek medical attention if irritation persists.
Skin Contact: Wash with soap and water. Remove contaminated clothing.
Inhalation: Move to fresh air. Get medical help if symptoms occur.
Ingestion: Rinse mouth with water. Seek medical advice if discomfort appears.
Handling and Storage
Storage Conditions: Keep container tightly closed in a cool, dry, well-ventilated place.
Handling Precautions: Prevent dust generation. Use protective eyewear and avoid environmental release.