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When propane comes into direct contact with skin, it can cause frostbite. This is primarily due to the fact that propane is stored as a liquid under pressure. When released, it rapidly expands and can achieve very low temperatures as it vaporizes. If skin is exposed to liquefied propane, the cold can damage tissue and lead to frostbite, which is characterized by ice crystal formation in the skin and underlying tissues.
Skin typically reacts to extremely low temperatures, prompting symptoms that include pain, numbness, and potentially blistering. Understanding this effect is essential for safety when handling propane, indicating the importance of wearing protective gloves and gear to prevent such injuries.
The other options describe scenarios that do not typically occur from direct contact with propane. Allergic reactions to propane oils are uncommon and not relevant in this context. Cracked gloves could potentially be a result of cold exposure but are not as directly related as frostbite. Lastly, while propane has regulations associated with it, being an EPA hazard does not relate to immediate physical effects of skin contact.