# ISO 21068-2:2008 — Withdrawn and superseded ISO standards

For ISO 21068-2:2008, item title is Chemical analysis of silicon-carbide-containing raw materials and refractory products — Part 2: Determination of loss on ignition, total carbon, free carbon and silicon carbide, total and free silica and total and free silicon; status code is 9599; successor is ISO 21068-2:2024; withdrawn / published date is 2008-07-21, recorded from its source on 2026-08-05.

- **Identifier:** ISO 21068-2:2008 _(verified: appears in the quote below)_
- **Item title:** Chemical analysis of silicon-carbide-containing raw materials and refractory products — Part 2: Determination of loss on ignition, total carbon, free carbon and silicon carbide, total and free silica and total and free silicon _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 21068-2:2024
- **Withdrawn / published date:** 2008-07-21 _(verified: appears in the quote below)_

## What the source says

> 43830,IS,,ISO 21068-2:2008,"Chemical analysis of silicon-carbide-containing raw materials and refractory products — Part 2: Determination of loss on ignition, total carbon, free carbon and silicon carbide, total and free silica and total and free silicon","Analyse chimique des matières premières et des produits réfractaires contenant du carbure de silicium — Partie 2: Détermination de la perte au feu, du carbone total, du carbone libre et du carbure de silicium, de la silice totale et libre, et du silicium total et libre",2008-07-21,1,['81.080'],ISO/TC 33,9599,,[83505],"['en','fr']",48,"<p>ISO 21068-2:2008 specifies analytical techniques for the determination of change in mass by thermal tre

## Source

- https://isopublicstorageprod.blob.core.windows.net/opendata/_latest/iso_deliverables_metadata/csv/iso_deliverables_metadata.csv

Last verified: 2026-08-05. Review by: 2027-02-01.
Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).