Physical Address
304 North Cardinal St.
Dorchester Center, MA 02124
D5234-92 – Standard Test Method Technical Guide
🔍 Scope and Significance
This guide covers the analysis of ethylene product, providing direction on possible test methods, units of measure, and potential concentration ranges of components. The values stated in SI units are regarded as standard. This guide is not intended as specifications for ethylene product. It addresses safety concerns where applicable and users must establish appropriate practices.
The significance is to improve consistency between producers and users when dealing with analytical results. It offers an overview of typical components such as ethylene (≥99.85% mass), C4s, COS, MeOH, and others. By standardizing methods and units, errors are minimized.
📊 Key Components and Analytical Methods
Ethylene product analysis involves various components and test methods as listed below.
| 🎯 Component | 📏 Test Method | ⚡ Typical Concentration |
|---|---|---|
| Ethylene | D2505 | ≥99.85% mass |
| Noncondensable Gases | D2504 | Trace to low ppm |
| Carbon Dioxide | D2505 | Low ppm |
| Sulfur | D3246 or D4468 | Parts per million |
| Moisture | D4178 | ppm range |
Other methods include Practice F307 for sampling and terminology for detectors like FPD and IC for trace components.
⚙️ Sampling and Safety Practices
Sampling must follow Practice F307 or equivalent. Liquid ethylene samples are prohibited to prevent over-pressuring and hazards. Static electricity can occur during rapid discharge, so proper grounding is advised.
⚠️ Never sample liquid ethylene to avoid fire and explosion risks.
Users should determine safety and health practices before use.
💡 Always report analytical results in SI units for consistency.
❓ Frequently Asked Questions
🔍 What is ethylene product per this guide?
It is a hydrocarbon product containing at least 99.85% mass ethylene.
💡 What is the purpose of this guide?
To improve consistency in analytical measurements and minimize errors in reporting.
⚡ Which test methods are primarily used?
D2505 for ethylene, D2504 for noncondensable gases, D3246 for sulfur, and D4178 for moisture.
📌 What are the key safety measures?
Avoid liquid sampling and use precautions against static electricity.