乙烯 Detection
Formula C₂H₄ · CAS 74-85-1 · 可燃 / 麻醉 / 单纯性窒息
Hazards & Toxic Symptoms
Ethylene is a colorless, flammable gas with a faint sweet odor. It is narcotic at low concentrations and can cause asphyxiation at high concentrations (>50%). It is a plant ripening hormone.
Occupational Exposure Limits (GBZ 2.1-2019)
| PC-TWA (Time-Weighted Average) | — |
|---|---|
| IDLH (Immediately Dangerous to Life or Health) | — |
| LEL (Lower Explosive Limit) | 2.7% |
| UEL (Upper Explosive Limit) | 36% |
⚠️ Actual alarm thresholds depend on on-site risk assessment. ⚙️ Use the GB Alarm Calculator →
Typical Application Scenarios
- Polyethylene (PE)/PVC raw materials (chemical industry leader)
- Ethylene oxide (EO)
- Fruit and vegetable ripening
- Welding/Cutting
Detection Principle / Recommended Sensors
PID / catalytic combustion / infrared
Common Range：0-100% LEL
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