🔍 Key Concepts

• Flash point definition: the lowest temperature at which a liquid gives off enough vapor to ignite in air • Physical properties of vinyl chloride as a liquefied flammable gas used in industry • Relationship between boiling point, vapor pressure, and very low flash points

💭 Think About

• Think about whether vinyl chloride is stored and transported as a typical flammable liquid or as a very cold liquefied gas under pressure • Compare the listed temperatures: which ones are consistent with substances that are gases at normal room temperature? • Ask yourself: would a substance with this flash point be considered extremely flammable, moderately flammable, or only flammable at warmer temperatures?

✅ Before You Answer

• Verify how vinyl chloride is classified in chemical data (e.g., flammable gas vs. flammable liquid). • Check typical flash point ranges for highly volatile substances that are gases at ambient conditions. • Confirm whether the flash point is well below room temperature or closer to everyday ambient temperatures.