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D34-08 – Standard Test Method Technical Guide
📌 Scope and Significance
ASTM D34-08 is a standard guide for the chemical analysis of white pigments, approved for use by U.S. Department of Defense agencies. It provides a compilation of ASTM methods for analyzing pigments such as lead, zinc, titanium dioxide, calcium carbonate, calcium sulfate, barium, china clay, and magnesium silicate. The guide assists chemists in selecting appropriate tests, as emphasized in Section 3.1.
🧪 Test Methods and Standards
The guide references specific standards for each pigment type. Tests must follow these methods, with non-standard procedures requiring agreement between purchaser and seller (Section 4.1).
| 🟦 Pigment Type | 📏 ASTM Standard |
|---|---|
| Lead Pigments | Test Methods D1301 |
| Zinc Pigments | Test Methods D3280 |
| Titanium Dioxide | Test Methods D1394 |
| Calcium Carbonate | Specification D1199 |
| Calcium Sulfate | Test Methods C471M |
| Barium Pigments | Test Methods D715 |
| China Clay | Test Method D718 |
| Magnesium Silicate | Test Methods D717 |
⚗️ Chemical Analysis Procedures
Each pigment has designated methods. For example, titanium dioxide uses Test Methods D1394 for analysis, while zinc and lead pigments are analyzed under D3280 and D1301 respectively. Calcium carbonate is covered by D1199, and calcium sulfate by C471M. Barium pigments use D715, china clay uses D718, and magnesium silicate uses D717.
⚠️ Important: Non-standard test methods must be agreed upon by purchaser and seller.
💡 Tip: This guide simplifies chemical analysis by consolidating standards for white pigments.
❓ Frequently Asked Questions
🔍 What is ASTM D34-08?
ASTM D34-08 is a standard guide for the chemical analysis of white pigments.
💡 Which method is used for titanium dioxide pigments?
Test Methods D1394 is used for titanium dioxide pigments.
⚡ How are lead pigments analyzed?
Lead pigments are analyzed using Test Methods D1301.
📌 What does Section 4.1 state?
Section 4.1 states that tests must follow ASTM methods, and non-standard procedures require agreement.