ERIOCHROMIC BLACK T solution 0.1% 250ml WARCHEM

Technical information about chemical reagents:

• Chemical formula: C₂₀H₁₂N₃NaO₇S
• CAS number: 1787-61-7
• EC number: 217-250-3
• Synonyms: Eriochrome Black T
• Grade: Pure
• Purity: 0.1% (w/v)
• Molar weight: 461.38 g/mol
• Appearance: red-violet to blue clear solution (0.1% in water)
• Packaging: Plastic container
• Physical state: Liquid

Examples of professional applications in various industries:

• Water hardness determination: Use in complexometric titrations (EDTA titration) as a metal indicator to detect hardness-forming substances (e.g. Ca²⁺, Mg²⁺).
• Environmental analysis: Used for determining metal ion concentrations in natural and waste waters.
• Laboratory analysis: Used as a pH-dependent indicator in various analytical procedures, particularly in chemistry and biology research.
• Teaching and training: Demonstration of metal complex formation and titration procedures in teaching laboratories.

Hazard statements on the product label:

No hazards requiring labeling according to current CLP regulation.

Safety instructions on the product label:

P264: Wash hands thoroughly after handling.
P280: Wear protective gloves and eye 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.
P501: Dispose of contents/container in accordance with local regulations.

Restrictions: For professional use only.

Recommended storage conditions:

1. Store in a dry, cool and well-ventilated place.
2. Keep container tightly closed.
3. Protect from direct sunlight.