CHALK (ACID FORM) - pure 10g WARCHEM

Technical information about chemical reagents:

• Chemical formula: C21H17N2O7S
• CAS number: 3737-95-9
• EC number: 223-117-0
• Synonyms: Calconcarboxylic acid, KALCES (acid form)
• Grade: Pure
• Molar mass: 439.23 g/mol
• Appearance: Black powder
• Packaging: Plastic container
• Shelf life: 24 months after delivery

Examples of professional applications in various industries:

• Laboratory analysis: Used as a metal indicator in complexometric titrations, particularly for determining calcium and magnesium ions.
• Water analysis: Applied for water hardness control and in EDTA titration for determining hardness-forming agents.
• Research and development: Used in analytical methods for studying chelation and complex reactions.
• Education: Used in training laboratories for demonstrating chemical detection reactions and complex formation.

Hazard statements on the product label:

No properties classified as hazardous according to current GHS classification.

Safety instructions on the product label:

P280: Wear protective gloves/eye protection/face protection.
P261: Avoid breathing dust.
P264: Wash thoroughly after handling.
P501: Dispose of contents/container in accordance with local regulations.

Restrictions: For professional use only.

Recommended storage conditions:

1. Store dry, tightly closed, and at room temperature.
2. Protect from light and moisture.
3. Store in original packaging to avoid contamination.
4. Avoid contact with food and foodstuffs.
5. Keep out of reach of children.