SECTION 10.6: Other Reactivity Information

Overview

This subsection addresses chemical interactions not covered in previous stability/reactivity sections and provides comprehensive information about potential decomposition products.

Reactivity Considerations

Factor CLP Classification Impact Mitigation Strategy
Incompatible Materials May generate: Flam. Gas 1, Ox. Liq. 1 Segregation protocols
Light Sensitivity Self-reactives Cat. A-B Amber glass containers
Moisture Reactivity Water-react. 1 (H260) Desiccant packs
Catalytic Effects Accelerated decomposition Material compatibility checks

Reactivity Assessment Matrix

Substance Pair Reaction Type Hazard CLP Class
Na + H₂O Violent gas evolution H260 Water-react. 1
HNO₃ + Organics Exothermic oxidation H242 Ox. Liq. 1
Cl₂ + NH₃ Explosive chloramine formation H205 Expl. Unst. Expl.

Special Cases

Peroxide Formation

  • Ether solvents: Diethyl ether forms peroxides >6 months storage
  • Testing protocol: KI-starch test → Blue = peroxide present

Metal Catalyzed Reactions

  • Fe³⁺/Cu²⁺ ions accelerate H₂O₂ decomposition (UN2014)

Example: Sodium Metal Reactivity Profile

2Na + 2H₂O → 2NaOH + H₂↑

  • Hazards: H260 (water-react.), H250 (pyrophoric)
  • Incompatibilities: Halogens, acids, oxidizers

Shelf Life Considerations

  • Accelerated aging tests: 40°C/75% RH for 6 months = 5-year stability
  • Stabilizer depletion rates: Monitor antioxidant concentrations quarterly