Graphology - the study of handwritings; autograph - written with one's own hand; seismograph - a machine noting strength and duration of earthquakes. marina - a harbor for pleasure boats; maritime - relating to the sea; submarine - an undersea boat; aquamarine - color of sea water.
Chemicals are classified into various hazard classifications in accordance with their physiochemical properties and health hazards. Each class of chemical has a pictorial symbol called a danger symbol.
Hazard Class means the nature of the physical or health hazards, e.g. flammable solid, carcinogen, oral acute. toxicity. Hazardous Chemical means any chemical which is classified as a physical hazard or a health hazard, a simple. asphyxiant, combustible dust, pyrophoric gas or hazard not otherwise classified. Health Hazard means a chemical which is classified as posing one of the following hazardous effects: acute toxicity. (any route of exposure); skin corrosion or irritation; serious eye damage or eye irritation; respiratory or skin.