ISO 3425:1975

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

Published By	Publication Date	Number of Pages
ISO	1975-10	4

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Categories: 71.060.10 - Chemical elements, ISO

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Description

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.

Additional information

Published Code	ISO
Published By	International Organization for Standardization
Publication Date	1975-10
Pages Count	4
Language	France
Edition	1
File Size	204.8 KB
ICS Codes	71.060.10 - Chemical elements

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ISO 3425:1975

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