0 Items
My account
Phone: (011) 7541-421, 3409-301, 3409-335, 6547-293, 3409-310
E-mail: Standards sales: prodaja@iss.rs Education: iss-edukacija@iss.rs Information about standards: infocentar@iss.rs
Stevana Brakusa 2, 11030 Beograd
Main menu

ISO 3425:1975

Sulphur for industrial use — Determination of ash at 850-900 degrees C and of residue at 200 degrees C

Oct 1, 1975

General information

90.93     Feb 14, 2025

ISO

ISO/TC 47

International Standard

71.060.10  

French   English  

Buying

Published

Language in which you want to receive the document.

Scope

Application to products containing at least 98 % of elemental sulphur, expressed as a percentage by mass, of the product dried at 80 °C for 2 h. The difference between the ash and the residue corresponds to the "non-volatile bituminous matter" content at 200 °C. The principle of ashing consists in slow combustion in air of a test portion of the dried product. Heating in a furnace, controlled at 850 °C to 900 °C, and weighing. The determination of non-volatile matter is carried out by slow evaporation in a furnace, controlled at (200 10) °C, in a flow of nitrogen, of the volatile matter and the sulphur. Weighing of the residue after about 10 h.

Life cycle

NOW

PUBLISHED
ISO 3425:1975
90.93 Standard confirmed
Feb 14, 2025