GB/T 12007.2-2025 Active National standards

GB/T 12007.2-2025 Epoxy resins—Part 2:Determination of sodium ion

GB/T 12007.2-2025 Epoxy resins—Part 2:Determination of sodium ion

Publish Date: 2025-10-31 Implement Date: 2026-05-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: GB/T 12007.2-2025

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Basic standards and general methods for synthetic resins and plastics

ICS Name: Thermosetting plastics

Publish Date: 2025-10-31

Implement Date: 2026-05-01

Pages: 12 pages

Scope

This document describes the methods of determining the sodium ion content in epoxy resin water extracts using a sodium ion concentration meter and flame atomic absorption spectrometry.
The sodium ion concentration meter method in this document is suitable for determining the sodium ion content in bisphenol A-type epoxy resins; the flame atomic absorption spectrometry method is suitable for determining the sodium ion content in epoxy resins that can be dissolved in chloroform.

Development Information

Word Count: 15 Thousand words Pages: 12 pages

Replace the following standards

GB/T 12007.2-1989 Epoxide resins—Determination of sodium ion

Referenced Standards

GB/T 678-2002 Chemical reagent—Ethanol GB/T 678-2023 Chemical reagent—Ethanol GB/T 679-2002 Chemical reagent—Ethanol GB/T 686-1989 Chemical reagent—Acetone GB/T 686-2008 Chemical reagent—Acetone GB/T 686-2023 Chemical reagent—Acetone GB/T 1266-2006 Chemical reagent—Sodium chloride HG/T 2629-2011 Chemical reagent: Ba(OH)2·8H2O (Barium hydroxide hydroxide) HG/T 2629-1994 Chemical Reagents - Barium Hydroxide Hexahydrate (Barium Hydroxide) HG/T 3455-2014 Chemical Reagents - Cyclohexanone HG/T 3455-2000 HG/T 3455-2000 Chemical reagent Cyhexanone

Related Standards

GB/T 4616-1984 Replaced

GB/T 4616-1984 Phenolic moulding materials—Determination of acetone-soluble matter (apparent resin content of material in the unmoulded state)

Publish Date: 1984-07-30

GB/T 4617-1984 Replaced

GB/T 4617-1984 Phenolic mouldings—Determination of acetone-soluble matter

Publish Date: 1984-07-30

GB/T 5471-1985 Replaced

GB/T 5471-1985 Preparation method for compression moulding of specimens of thermosetting moulding materials

Publish Date: 1985-10-17

GB/T 5472-1985 abolished_transferred

GB/T 5472-1985 Test method for rectangular flow cure properties of thermosetting moulding compounds

Publish Date: 1985-10-17

GB/T 5473-1985 Replaced

GB/T 5473-1985 Phenol-formaldehyde mouldings—Detection of free ammonia

Publish Date: 1985-10-17

GB/T 5474-1985 Replaced

GB/T 5474-1985 Phenol-formaldehyde mouldings—Determination of free ammonia and ammonium compounds—Colorimetric comparison method

Publish Date: 1985-10-17