GB/T 46211-2025 in English
VALIDPlastics—Hardeners and accelerators for epoxide resins—Determination of free acid in acid anhydride
- Issued on:2025-08-29
- Implemented on:2026-03-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
Price(USD)：
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$204.00
$204.00
| Standard No: | GB/T 46211-2025 |
| Document status: | VALID |
| Title in English: | Plastics—Hardeners and accelerators for epoxide resins—Determination of free acid in acid anhydride |
| Title in Chinese: | 塑料 环氧树脂固化剂和促进剂 酸酐中游离酸的测定 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2025-08-29 |
| Implemented on: | 2026-03-01 |
| ICS Classification: | 83.080.10-Thermosetting materials |
| Chinese Classification: | G31-Basic standards and general methods for synthetic resin and plastic |
| Professional Classification: | GB-National Standard |
| Related Keywords: | free acid
free acid content plastics hardeners epoxy resins acid |
| Related Topics: | non-free acid
Epoxy resin curing curve testing standards |
《GB/T 46211-2025塑料 环氧树脂固化剂和促进剂 酸酐中游离酸的测定》由TC15（全国塑料标准化技术委员会）归口，TC15SC11（全国塑料标准化技术委员会热固性塑料分会）执行，主管部门为中国石油和化学工业联合会。
Introduction
This standard provides a method for the determination of free acid in anhydrides used as curing agents and promoters for plastics, specifically epoxy resins. It outlines procedures that ensure accurate and consistent measurement of free acid content. The method is applicable to the analysis of anhydrides within the specified scope. It defines the necessary equipment, reagents, and experimental conditions required for the test. The standard also includes details on sample preparation and the steps involved in the analytical process. The procedure is designed to be reliable and reproducible, ensuring that results meet specified requirements. The standard is structured to facilitate the application of the method in laboratory settings.
*** Please note: This description may not be accurate, please refer to the official documentation.
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