1. Color: The color of a hazardous material can provide clues about its potential hazards. For example, red is often associated with flammability, yellow with reactivity, and blue with toxicity.

2. Odor: The odor of a hazardous material can also indicate its potential hazards. For example, a strong, pungent odor may indicate the presence of a toxic gas.

3. Physical state: The physical state of a hazardous material can affect its potential hazards. For example, a gas can spread more easily and quickly than a liquid or solid.

4. Boiling point: The boiling point of a hazardous material can indicate its flammability. For example, a hazardous material with a low boiling point is more likely to be flammable than one with a high boiling point.

5. Flash point: The flash point of a hazardous material is the temperature at which it will release enough vapors to ignite. This information can be used to assess the fire risk of a hazardous material.

6. Autoignition temperature: The autoignition temperature of a hazardous material is the temperature at which it will spontaneously ignite without an external ignition source. This information can be used to assess the fire risk of a hazardous material.