Flowchart for determining appropriate hazard category of unknown chemicals, starting with the physical description of the unknown (e.g. solid or liquid) at the top of the decision tree. Tests are indicated in diamonds, and hazard categories are indicated in rectangular boxes

FIGURE 8.1Flowchart for categorizing unknown chemicals for waste disposal

This decision tree shows the sequence of tests to be performed to determine the appropriate hazard category of an unknown chemical. DWW, dangerous when wet; nos, not otherwise specified. Following categorization, select a hazard reduction procedure (section 8.D) or disposal option (section 8.B.6).

From: 8, Management of Waste

Cover of Prudent Practices in the Laboratory
Prudent Practices in the Laboratory: Handling and Management of Chemical Hazards: Updated Version.
National Research Council (US) Committee on Prudent Practices in the Laboratory.
Washington (DC): National Academies Press (US); 2011.
Copyright © 2011, National Academy of Sciences.

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