Overview
SIST EN ISO 3262-18:2023 provides internationally harmonized specifications and standardized test methods for precipitated sodium aluminium silicate, an important industrial extender. As Part 18 of the ISO 3262 series, this standard ensures quality consistency in raw materials used as extenders across various sectors, primarily in paints, coatings, plastics, and other composite materials. Developed by the international technical committees for pigments and extenders, the document describes both the necessary requirements for product quality and the accepted methods for sampling and laboratory analysis.
Key Topics
- Scope and Coverage
- Specifies the minimum quality standards for precipitated sodium aluminium silicate.
- Defines test methods for verifying compliance with these standards.
- Essential Product Requirements
- Includes key characteristics such as silica content, aluminium oxide and sodium oxide content, pH value, oil absorption, particle size, and residue on sieve.
- Test Methods
- Outlines precise analytical methods including gravimetric analysis, spectrometry (such as FAAS and ICP-AES), and standardized procedures for determining physical and chemical properties.
- Terminology
- Incorporates up-to-date definitions and references core terminology from ISO 18451-1 for consistency.
- Sampling Procedures
- Provides detailed guidance on correct sampling to ensure representative test results.
Applications
Precipitated sodium aluminium silicate finds extensive application as a functional filler or extender due to its performance and cost benefits. Following SIST EN ISO 3262-18:2023 helps industries and suppliers in several ways:
- Paints and Coatings
- Used to improve coverage, regulate sheen, and enhance physical properties in architectural and industrial paints.
- Plastics and Polymers
- Functions as a reinforcing filler for improved strength and stability in thermoplastics and thermosets.
- Rubber Compounding
- Incorporated as a performance additive in rubber products, often alongside silica-based reinforcing agents.
- Ink and Paper
- Provides control over viscosity and opacity in specialty printing inks and paper formulations.
- Quality Assurance
- Regular application of the standard’s test methods ensures ongoing product quality and facilitates international trade.
- Research and Development
- Enables R&D teams to benchmark and improve extender formulations for new products.
Related Standards
For comprehensive quality management and technical evaluation of pigments, fillers, and extenders, the following standards are closely associated with SIST EN ISO 3262-18:2023:
- ISO 3262-1: Extenders - Specifications and methods of test - Part 1: Introduction and general test methods
- ISO 787 Series: General methods of test for pigments and extenders (covers testing for volatility, oil absorption, and pH)
- ISO 18451-1: Terminology for pigments, dyestuffs and extenders
- ISO 3696: Water for analytical laboratory use - Specification and test methods
- ISO 15528: Sampling of paints, varnishes, and raw materials
- ISO 5794-1:2022: Rubber compounding ingredients - Silica, precipitated, hydrated - Non-rubber tests
Practical Value
Implementing SIST EN ISO 3262-18:2023 delivers several practical benefits:
- Consistency and Reliability: Ensures that precipitated sodium aluminium silicate meets consistent quality benchmarks worldwide.
- Efficiency in Sourcing: Facilitates procurement of materials with predictable performance characteristics.
- Market Access: Simplifies compliance for manufacturers supplying products across international markets.
- Customer Assurance: Provides end-users with confidence in the technical quality and suitability of supplied extenders.
For manufacturers, suppliers, and end-users of precipitated sodium aluminium silicate, following the guidelines and methods of test as established in this standard is essential for maintaining product quality, meeting customer specifications, and ensuring regulatory compliance in key industrial applications.