Labels/标签
Companies that make hazardous products must put label on them. The label must have all of this information:
生产有危害性产品的公司必须在产品上贴上标签。而且这个标签必须具备所有下列内容：
√Risk Phrases/危害程度
√Precautionary Measures/预防措施
√First Aid Measures/急救措施
√Name of the Hazardous Material/有害物质的名称
√Hazard Symbol(s)/有害物质的标志
√Reference to the MSDS/材料安全数据单的说明书
√Name and Address of the Manufacturer/生产厂家的名称和地址。

Hazardous Material groups and their symbols
有害物质类别及其标记
There are eight groups of hazardous materials. Each group has a particular hazard symbol. You will see the symbol on the label. The eight groups are as follows:
一共有8类有害物质。每一类都有特定的标记。在标签上，你可以看见这种标记。8类有害物质如下：

l. Compressed Gases
压缩气体
These substances are gases when they are at room temperature. They are kept under pressure or compressed. A container with this symbol can explode and take off like a rocket!
这类物质在室温状态下是气体。它们在受压或压缩状态下保存。带有该标记的容器可能爆炸，并像火箭一样飞出。

Examples include oxygen and acetylene which are widely used in industry for cutting and welding metal. These gases are kept in cylinders like the one shown on the hazard symbol. Other examples are the pressurized cans for spray paint and hair spray.
比如，工业场所广泛用以切割和焊接金属的氧气和乙炔。这些气体保存在贴有上述危险标记的气缸里。其它压缩密封在容器里的这类物质还有喷气和喷雾发胶。

2. Flammable and Combustible Materials
易燃及可燃物品
These materials will burn easily. Flammable material will burn much more easily than combustibles. Keep flammables away from heat or sparks. An example of a flammable is gasoline.
这类物品极易燃烧。易燃物质比可燃物质更易燃烧。应将该类物质远离暖热区或火星迸溅处。汽油就是一种易燃物质。

3. Oxidizing Material
氧化物品
This is a material that will cause another substance to burn or make it burn faster. Keep these materials away from heat and store in well ventilated areas away from reactive chemicals. An example is chromic acid which will cause paper to burn.
这是一种会助燃其它物质或使之燃烧更快的物品。应将它们远离暖热区和化学反应物品，并存放在通风良好的地方。这类物品包括会使纸张燃烧的铬酸。

4. Corrosive Material
腐蚀性物品
A substance that will easily “eat away” other materials such as steel. Corrosives can seriously harm your eyes and burn your skin. Examples include most acids such as a car battery acid.
这类物质包括硫酸等大多数酸溶液，它们会将钢铁类的其它物质侵蚀掉。腐蚀性物品会严重伤害你的眼睛和灼伤你的皮肤。(续三)