For all workplaces facing invisible "dangers." If you handle chemical substances, the first step is to understand the risks correctly. **"Specific Chemical Substances, Tetraalkyl Lead, etc."** is a practical guide that covers the characteristics and risks of chemical substances required in workplaces, educational institutions, and disaster response sites. ■ Physical and chemical properties of each substance ■ Mechanisms of health damage ■ Regulatory content and handling standards under laws and regulations ■ Risk assessment and management methods in practice ■ Covers emergency response and protective measures It covers specific chemical substances, tetraalkyl lead, etc., a group of substances that have a particularly large impact on the human body and the environment. It provides evidence-based answers to the questions that workers, managers, and instructors in the field face: "What is dangerous?" and "How should we deal with it?" With easy-to-understand diagrams and explanations, it is easy to understand even without specialized knowledge, and is also very useful as educational material. As an "essential book" for protecting safety and health, it can be used in all situations, such as workplaces, classrooms, and management departments. Risks can be avoided by knowing them. With this book, let's protect workplaces and lives from invisible dangers. ※This book has many handwritten notes and folded corners. Please purchase only if you understand this.