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Hazardous Materials Classification


Hazardous materials classification involves categorizing each substance based on its properties and associated risks. This classification establishes the safety standards for transportation, storage, and usage processes.

Class-5 Oxidizing Agents

Class-5.1 Oxidizing Agents typically comprise substances that provide oxygen, leading to the combustion of other materials. For instance, fertilizers containing Sodium Nitrate or Ammonium Nitrate. The class symbol is black, contrasted against a yellow background.


  • O1: Liquid substances
  • O2: Solid substances
  • O3: Items
  • OF: Combustible solid substances with oxidizing effects
  • OS: Self-heating solid substances with oxidizing effects

Class-5.2 Organic Peroxides

Organic peroxides are substances that can self-heat and explode. Special precautions are necessary for their storage and transportation. Additionally, they receive classification based on different levels of danger.

Precautions and Storage

Each category has specific storage and transportation conditions. To ensure the safety of organic peroxides, diluents like water can be used, or special packaging may be necessary.

Class-6 Toxic Substances

Toxic substances may pose harmful effects on human health. They present significant risks for both humans and the environment. This class includes different subgroups and risk categories.

Class-7 Radioactive Materials

Radioactive materials emit radiation and might require specialized training for handling and usage. They carry serious health implications.

Class-8 Corrosive Materials

These substances have the potential to cause damage to the skin and tissues. Special precautions are necessary during storage and transportation. Plastic packaging is often utilized to contain these substances.

Class-9 Miscellaneous Hazardous Materials

This category encompasses substances outside other classes, with distinct risks. These materials are divided into subgroups and assessed based on specific risk categories.

This classification helps determine the characteristics and risks of each substance, which in turn aids in implementing appropriate safety measures. Especially in transportation and storage processes, this classification plays a crucial role in ensuring the protection of human health and the environment.

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