Food additives A–Z › INS 539
INS 539 — Sodium thiosulfate
ثيوسلفات الصوديوم · Antioxidant, Preservative, Sequestrant
Codex GSFA Permitted with provisions
CXS 192-1995, revision 2026
Table 1 has provisions for it in 59 food categories, each with its own maximum level.
European Union Not on the EU list
Regulation (EC) 1333/2008, Annex II, consolidated text of 18.08.2026
Not on the EU list of authorised food additives (Annex II Part B), so not authorised in the EU.
United States (FDA) Listed
FDA Substances Added to Food and Color Additive Status (substance level)
Listed for direct use in food (21 CFR 184.1807). The conditions of use are in that section.
Substance level only: FDA does not set limits by food category the way Codex and the EU do; conditions of use are in the cited 21 CFR section.
The maximum level depends on the food category. Check this additive for a specific product:
Check INS 539 by food categoryIn Jordan the Jordanian technical regulations and JFDA decide. Codex, the EU and the US are references for comparison and export, not a substitute for the local decision. FoodCheck Jordan is an independent scientific reference, not affiliated with the Jordan Food and Drug Administration or any regulator.
Sources: Codex CXS 192-1995, General Standard for Food Additives, revision 2026 · Regulation (EC) No 1333/2008, Annex II, consolidated text 02008R1333-20260818 (EUR-Lex PDF) · FDA Substances Added to Food (last updated 9/8/2026) and Color Additive Status List (last updated 8/14/2026), downloaded 2026-10-21. Data built: 2026-10-21.