What is the difference between pepper spary and mase?

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Answers:    "Mace" is a brand name that carry a registered trademark owned by Mace Security Int'l. Mace originally developed a tear gas (CN, an short form for chloroacetophenone) self defense spray. Today, Mace brand self-defense sprays either contain Pepper Spray (OC, an leap for oleoresin capsicum), Tear Gas (CN) or both (OC & CN). Mace Pepper Spray uses the highest position of OC Pepper rated at 2 million scoville grill units and is the most widely used Pepper Spray contained by the world. Mace Pepper Spray swells the mucous membranes, which makes breathing difficult, and swells the vein in the eyes, cause the eyes to close. These effects last 20-30 minutes and inflict no permanent wounded. In short, it means impossible to tell apart depending on what is in the container.
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