EC number
EC 231-098-5 Krypton Kr
CAS 7439-90-9 · EC 231-098-5
Where EC 231-098-5 appears: every table entry that prints it among its identifiers, in the newest version of each act this record holds, and every recorded change to those entries. Many entries name a group of substances and print no number, so absence here is not absence from the law. Not legal advice.
Where it appears now
REACH Annex IV, Einecs No 231-098-5
Last changed in the version in force , by Regulation (EC) No 987/2008, the act that change names · Annex IV on this site
| Einecs No | Name/Group | CAS No |
|---|---|---|
| 231-098-5 | Krypton Kr | 7439-90-9 |
Look up a number
Type a CAS or EC number, with or without its hyphens, or an Index No into the search box at the top of the page: it reads 50000 as CAS 50-00-0. Every number is also listed by act on the substances page.
Its history
· added · REACH Annex IV, Einecs No 231-098-5
Recorded in the version in force , by Regulation (EC) No 987/2008, the act that change names. The change on its version page
| Identifiers | Einecs No | Name/Group | CAS No |
|---|---|---|---|
| Einecs No 231-098-5CAS 7439-90-9EC 231-098-5 | 231-098-5 | Krypton Kr | 7439-90-9 |
Sources
- REACH: every version the record holds; rows read from EUR-Lex consolidated version 02006R1907-20260622, detected 11 September 2026 (external, EUR-Lex)