ISO 7431-1:2024
Thiourea for industrial use — Part 1: Test methods

Standard No.
ISO 7431-1:2024
Release Date
2024
Published By
International Organization for Standardization (ISO)
Latest
ISO 7431-1:2024
 

Scope
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.

ISO 7431-1:2024 Referenced Document

  • ISO 10304-3:1997 Water quality - Determination of dissolved anions by liquid chromatography of ions - Part 3: Determination of chromate, iodide, sulfite, thiocyanate and thiosulfate
  • ISO 11885:2007 Water quality - Determination of selected elements by inductively coupled plasma optical emission spectrometry (ICP-OES)
  • ISO 14911:1998 Water quality - Determination of dissolved Li<(hoch)+>, Na<(hoch)+>, NH<(Index)4><(hoch)+>, K<(hoch)+>, Mn<(hoch)2+>, Ca<(hoch)2+>, Mg<(hoch)2+>, Sr<(hoch)2+> and Ba<(hoch)2+> using ion chromatography - Method for water and waste water
  • ISO 3165 Sampling of chemical products for industrial use; Safety in sampling
  • ISO 3696 Water for analytical laboratory use; Specification and test methods
  • ISO 6353-1:1982 Reagents for chemical analysis; Part 1 : General test methods
  • ISO 7027-1 Water quality - Determination of turbidity - Part 1: Quantitative methods
  • ISO 7980:1986 Water quality; Determination of calcium and magnesium; Atomic absorption spectrometric method
  • ISO 8213 Chemical products for industrial use; Sampling techniques; Solid chemical products in the form of particles varying from powders to coarse lumps

ISO 7431-1:2024 history

Thiourea for industrial use — Part 1: Test methods

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