Understanding Class 4 Dangerous Goods: Flammable Solids

Flammable solids are classified by the Australian Dangerous Goods Code as materials that can readily ignite or contribute to a fire through friction. These Class 4 dangerous goods also include substances that may heat up or release flammable gases when exposed to air or water. Proper storage and handling are essential to ensure safety and prevent hazardous incidents.

Subcategories of Class 4 Dangerous Goods

Class 4 dangerous goods are divided into three distinct subcategories:

• 4.1 Flammable Solids: Materials that can ignite through friction or heat.

• 4.2 Substances Liable to Spontaneous Combustion: Substances that can ignite without an external ignition source.

• 4.3 Substances That Emit Flammable Gases When in Contact With Water: Reactive materials that release flammable gases upon exposure to water.

Flammable Solids vs. Flammable Liquids

Many people confuse Class 4 flammable solids with Class 3 flammable liquids, but their storage and handling requirements are distinctly different.

The primary difference lies in their ignition conditions:

• Flammable Liquids (Class 3): Require heat to ignite.
• Flammable Solids (Class 4): Can ignite due to:
  • Friction
  • Self-reactivity
  • Self-heating
  • Exposure to air or water
  • Insufficient dilution

Each category of flammable solid has specific conditions that can lead to ignition, making their management more complex.

Safe Storage of Flammable Solids

To minimize risks, flammable solids must be stored in dedicated cabinets designed to meet the specific requirements of Class 4 dangerous goods. Proper labeling is crucial to identify the materials and mitigate potential hazards.

Key considerations for safe storage include:

• Ensuring cabinets are compatible with the type of flammable solids stored.
• Avoiding proximity to Class 3 flammable liquids or incompatible substances.
• Following storage guidelines to protect the environment and workplace safety.

Find Compliant Class 4 Storage Solutions at SAYKA

SAYKA offers a wide range of Class 4 Dangerous Goods Cabinets that meet Australian safety standards and include appropriate signage. Explore our selection to ensure the safe and compliant storage of flammable solids in your workplace.