consider all chemicals to be dangerous unless you are specifically instructed otherwise
7.most laboratory directors require that students do not taste any chemical in the laboratory.know the policies of your laboratory director.never taste chemicals unless specifically instructed to do so.
8.never smell gases or vapors directly.when you are instructed to report the odor of a chemical,gently waft the vapors toward your nose and smell cautiously as desribed in laboratory techniques section I.1.