ISO/DIS 7431-2

Thiourea for industrial use — Part 2: Specifications

General information

Current stage: 40.20 Effective date: Feb 13, 2023

Originator: ISO

Owner: ISO/TC 47

Type: International Standard

ICS: 71.040.40

Languages: English

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Status: Draft

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Scope

This document specifies requirements for three classes, marking, packaging, transportation and storage of thiourea for industrial purpose, and give safety information in Annex A.
Class I is a high quality grade normally used in the areas of optical, electronic and new energy materials. Class II and class III belong to ordinary quality grades and are suitable for the basic chemical industry, such as printing, dyeing, pharmaceutical field, pesticides, and mineral processing, etc.
This document is applicable to material which consists essentially of thiourea, (CH4N2S).
Thiourea structure formula:
Molecular weight: 76,12 (according to international relative atomic mass of 2019)

Life cycle

NOW

IN_DEVELOPMENT
ISO/DIS 7431-2
40.20 DIS ballot initiated: 12 weeks
Feb 13, 2023

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