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D5223-03 – Standard Test Method Technical Guide
The ASTM D5223-03 standard specifies the requirements for engine coolant grade propylene glycol, ensuring its suitability for use in engine cooling systems. This article summarizes the key aspects of the standard, including chemical and physical property specifications, referenced test methods, and compliance guidelines.
📐 Specification Overview and Requirements
This specification covers propylene glycol intended for use as an engine coolant. The product must conform to the chemical and physical requirements detailed in Table 1 of the standard, which include parameters such as purity, color, density, and trace ion concentrations.
⚙️ Key Properties and Test Methods
The standard references several ASTM test methods to verify compliance. Table 1 below outlines the required properties and their corresponding test methods.
| 📏 Property | 🎯 Specification | ⚡ Test Method |
|---|---|---|
| Color (Platinum-Cobalt Scale) | Max 10 | D 1209 |
| Density at 20°C | 1.035 – 1.045 g/mL | D 4052 / D 5931 |
| Chloride Ion Content | Max 10 ppm | D 3634 / D 5827 |
| Iron Content | Max 1 ppm | E 394 |
| Purity (by E 202) | Min 95.0% | E 202 |
These values are typical for engine coolant grade propylene glycol and ensure compatibility with cooling system components.
💡 Technical Tip: Always use fresh samples for density measurements to avoid evaporation errors, which can affect accuracy.
📊 Sampling and Compliance
Sampling for testing must be performed in accordance with ASTM Practice E 300 to ensure representative results. Packaging, labeling, and transportation must comply with all applicable federal, state, and local regulations, with responsibility falling on the manufacturer and shipper.
⚠️ Important: Chloride levels must be strictly controlled to prevent corrosion in engine cooling systems. Refer to D 3634 or D 5827 for accurate measurement.
❓ Frequently Asked Questions
🔍 What is the scope of ASTM D5223-03? It specifies requirements for engine coolant grade propylene glycol, including chemical and physical properties.
💡 What are the key properties tested? Color, density, chloride and iron content, and purity are evaluated using ASTM methods.
⚡ How should sampling be conducted? Sampling must follow ASTM Practice E 300 to ensure representative test results.
📌 What regulations apply to packaging? Commercial quantities must comply with applicable federal, state, and local regulations for packaging and transportation.