T/TAIA 003-2024 Active Group standards

T/TAIA 003-2024 Chemical reagent, determination of deuteration rate of chloroform by nuclear magnetic resonance hydrogen spectrum

Publish Date: 2024-02-06 Implement Date: 2024-02-06 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: T/TAIA 003-2024

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: -

ICS Name: Chemical reagents

Publish Date: 2024-02-06

Implement Date: 2024-02-06

Scope

Scope: This document specifies the method for determining the deuterium substitution rate of deuterated chloroform in chemical reagents using nuclear magnetic resonance hydrogen spectroscopy. This document is applicable to the daily monitoring of deuterated chloroform in chemical reagents and the determination of the deuterium substitution rate in production quality control, with a measurement range of ≥90.0%; Main technical content: Under the same parameter conditions, the one-dimensional hydrogen nuclear magnetic resonance (1H NMR) of deuterated chloroform reference substances and deuterated chloroform samples are measured separately. The residual chloroform content is determined by the ratio of the integrated area of the residual hydrogen in deuterated chloroform, and the deuterium substitution rate of the deuterated chloroform sample is calculated.