ISO 7431-1:2024 PDF
Thiourea for industrial use — Part 1: Test methods
Thiourea for industrial use — Part 1: Test methods
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 9
- Дата публикации:
- 18 января 2024 г.
- Издание:
- ISO IS 7431 edition 1 version 1
- ICS:
- 71.040.40
The document specifies test methods for industrial thiourea properties, such as thiourea content, water insoluble substance, ignition residue, initial melting point, turbidity, thiocyanate content, calcium element and heavy metals.
Abstract
Overview
ISO 7431-1:2024 - "Thiourea for industrial use - Part 1: Test methods" defines standardized laboratory test methods for assessing the quality and purity of industrial thiourea. The first edition specifies procedures to measure , , , , , , , and . The standard also sets general requirements for reagents, water quality and sampling to support consistent, reproducible results.
Похожие стандарты
Стандарты, упомянутые в описании