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Annex III Entry 51 31/07/2020

OXYQUINOLINE SULFATE

bis(8-hydroxyquinolinium) sulphate

OXYQUINOLINE SULFATE is listed in Annex III and may only be used under the conditions shown in this record. Maximum concentration in this record: (a) (0,3 % as base) (b) (0,03 % as base).

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Restricted substance— Annex III, EU Regulation 1223/2009
Max conc.: (a) (0,3 % as base) (b) (0,03 % as base)
Entry: 51

Record details

Maximum concentration

(a) (0,3 % as base) (b) (0,03 % as base)

Product type

Stabilizer for hydrogen peroxide in rinse-off hair products Stabilizer for hydrogen peroxide in leave-on hair products

INCI glossary name

OXYQUINOLINE SULFATE

Chemical name

bis(8-hydroxyquinolinium) sulphate

Chemical / IUPAC name

bis(8-hydroxyquinolinium) sulphate

Regulatory information

Regulation

(EU) 2019/1966

Identified ingredients

Key data

CAS
134-31-6
EC
205-137-1
Annex
III
Entry number
51

Inventory links for OXYQUINOLINE SULFATE

Direct matches are limited for this record, so nearby entries from Annex III are shown as well.

Annex III 52
Nearby record in the same annex

METHYL ALCOHOL

CAS: 67-56-1
EC: 200-659-6
Annex III 53
Nearby record in the same annex

Etidronic acid

CAS: 2809-21-4
EC: 220-552-8
Annex III 48
Nearby record in the same annex

SILVER NITRATE

CAS: 7761-88-8
EC: 231-853-9
Annex III 45
Nearby record in the same annex

BENZYL ALCOHOL

CAS: 100-51-6
EC: 202-859-9

What Annex III means for OXYQUINOLINE SULFATE

OXYQUINOLINE SULFATE is a restricted substance under Annex III of EU Cosmetics Regulation 1223/2009. Its use in cosmetics is only permitted under the specific conditions set out in the entry above, including applicable concentration limits, product type restrictions and required warning statements.

When including this substance in a formulation, all conditions — maximum concentration, product scope and warning labels — must be met simultaneously. Compliance with one condition does not override the others.

This record is linked to 1 CosIng inventory ingredient for name and identifier cross-reference. The page also surfaces 12 related annex records with overlapping identifiers, annex logic or naming patterns.

Compliance checklist

  • Ensure formulation concentration does not exceed: (a) (0,3 % as base) (b) (0,03 % as base)
  • Confirm product type compatibility: (a) Stabilizer for hydrogen peroxide in rinse-off hair products (b) Stabilizer for hydrogen peroxide in leave-on hair products
  • Document conditions of use in the Product Information File (PIF).

Frequently asked questions

OXYQUINOLINE SULFATE is listed in Annex III of EU Regulation 1223/2009 as a restricted substance. It may only be used under the conditions specified in the entry, including any maximum concentration, product type limitation and required warning statements shown above.

CAS 134-31-6 is the unique numerical identifier assigned to OXYQUINOLINE SULFATE by the Chemical Abstracts Service. In cosmetic compliance work, the CAS number is used to cross-reference the substance across regulatory databases, raw material specifications and safety assessment reports. Multiple EU annex entries may share the same CAS number if the same substance appears under different conditions or in different annexes.

The maximum concentration of (a) (0,3 % as base) (b) (0,03 % as base) applies to the concentration of the substance in the ready-to-use cosmetic product. When the substance is supplied as part of a blend or mixture, the calculation must account for the contribution of all sources in the formulation. The combined concentration must not exceed the stated limit.

Use the INCI Checker tool on this site to paste your full ingredient list (INCI) and scan it against all Annex II–VI entries. The tool highlights any ingredients that match restricted, prohibited or allergen-flagged records. This is useful for rapid compliance screening of finished product formulas or raw material declarations.
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Source note for Annex III record OXYQUINOLINE SULFATE

This page summarizes one Annex III record for OXYQUINOLINE SULFATE from public European Commission cosmetic materials and adds linked inventory or identifier matches when available.

Use this record page to review Annex III conditions for OXYQUINOLINE SULFATE, but confirm any final regulatory decision against the current official annex wording and source files.

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