ASTM D126-87(2023) PDF

Overview

ASTM D126-87(2023): Standard Test Methods for Analysis of Yellow, Orange, and Green Pigments Containing Lead Chromate and Chromium Oxide Green provides a comprehensive set of chemical procedures for the analysis and quality control of pigments comprising lead chromate and chromium oxide green. Developed under ASTM Committee D01 on Paint and Related Coatings, these methods are recognized for use by various industries, including those serving the U.S. Department of Defense, and adhere to internationally accepted standardization principles.

This standard applies to both pure pigment samples and pigments extracted from finished products such as paints, ensuring accurate assessment of chemical composition for maintaining product quality and regulatory compliance.

Key Topics

• Chemical Analysis Procedures: Covers step-by-step methods for the identification and quantification of pigment components-including lead chromate, total lead, chromium oxide green, sulfate, carbon dioxide, molybdenum, calcium oxide, extenders, and more.
• Quality Assurance: Methods support manufacturers and laboratories in verifying pigment composition and purity, helping assure product consistency and safety.
• Sample Preparation and Safety: Details best practices for preparing representative, homogeneous samples and emphasizes user responsibility for health, safety, and environmental measures, especially due to the hazardous nature of lead and chromium compounds.
• Measurement Scope: Specifies exclusive use of SI units to standardize results.
• Applicability: Methods are suitable for both raw pigment analyses and evaluation of pigments extracted from formulated products.

Applications

ASTM D126 is essential for a variety of sectors where pigment accuracy and consistency are critical:

• Paint and Coatings Manufacturers: Supports quality control of color pigments used in paints, inks, plastics, textiles, and coatings.
• Laboratories: Provides standardized analytical procedures for chemical testing, supporting conformity with international regulatory requirements.
• Quality Assurance and R&D: Enables precise quantification of pigment components, detection of extenders or impurities, and evaluation of moisture or volatile matter content.
• Regulatory Compliance: Assists organizations in meeting environmental, health, and safety guidelines related to lead and chromium compounds in colored pigments.

The standard's utility spans formulation verification, raw material assessment, and regulatory testing, enhancing product performance, safety, and market acceptance.

Related Standards

When working with analysis of pigments containing lead chromate and chromium oxide green, the following ASTM standards are directly referenced or commonly used for complementary analyses:

• ASTM D280 - Test Methods for Hygroscopic Moisture (and Other Matter Volatile Under the Test Conditions) in Pigments
• ASTM D521 - Test Methods for Chemical Analysis of Zinc Dust (Metallic Zinc Powder)
• ASTM D1193 - Specification for Reagent Water
• ASTM E11 - Specification for Woven Wire Test Sieve Cloth and Test Sieves

These standards ensure uniformity in sampling, reagent preparation, and measurement, supporting the robustness of chemical analyses as outlined in ASTM D126.

Keywords: pigment analysis, lead chromate pigment, chromium oxide green pigment, ASTM D126 standard, chemical testing of pigments, paint pigment quality control, yellow, orange, and green pigment analysis, pigment regulatory compliance.