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D2195-05 – Standard Test Method Technical Guide
📋 Overview and Scope
These test methods cover the testing of pentaerythritol for use in the manufacture of alkyd resins and other synthetic resins. The standard includes procedures for sulfate ash, moisture, hydroxyl content, assay by dibenzal and gas chromatography, and phthalate ester color. The values stated in SI units are regarded as standard.
The standard emphasizes adherence to specified limits using Practice E29 for rounding off results. Safety concerns are addressed in Section 34, and users should refer to the supplier’s Material Safety Data Sheet for hazard information.
⚠️ Safety Note: Users must establish appropriate safety and health practices before using these test methods. Refer to Section 34 for specific hazard statements and consult the Material Safety Data Sheet.
⚙️ Test Methods and Specifications
The standard lists several test methods organized by sections. The following table summarizes the test procedures and their corresponding sections:
| 🟦 Test Procedure | 📏 Sections |
|---|---|
| Sulfate Ash | 5 to 10 |
| Moisture | 11 to 16 |
| Hydroxyl | 17 to 22 |
| Assay (by dibenzal) | 23 to 29 |
| Assay (by gas chromatography) | 30 to 41 |
| Phthalate Ester Color | 42 to 49 |
These methods are essential for specification acceptance and are under the jurisdiction of ASTM Committee D01 on Paint and Related Coatings.
📊 Key Measured Properties and References
The test methods measure critical properties such as sulfate content, ash content, moisture, hydroxyl value, and assay purity. The referenced documents provide additional standards for reagents and test practices. The following table lists key referenced standards:
| 📐 Standard | 🎯 Description |
|---|---|
| D1193 | Specification for Reagent Water |
| D1209 | Test Method for Color of Clear Liquids |
| E222 | Test Methods for Hydroxyl Groups |
| E203 | Test Method for Water by Karl Fischer Titration |
Note that reagent grade chemicals are required unless otherwise specified, and all reagents must conform to ACS specifications when available.
💡 Precision Note: Practice E180 provides guidance for determining precision of ASTM methods, and all test results should be rounded off according to Practice E29 to ensure conformance with specifications.
❓ Frequently Asked Questions
🔍 What is pentaerythritol used for? It is used in the manufacture of alkyd resins and other synthetic resins.
💡 How is moisture determined? Moisture is determined through sections 11 to 16, using methods like Karl Fischer titration as per E203.
⚡ What safety precautions are required? Specific hazard statements are in Section 34, and users should consult the Material Safety Data Sheet.
📌 How should results be rounded off? Results should be rounded to the nearest unit in the last digit of the specification limit, as per Practice E29.