What other records share CAS 822-89-9?

CAS 822-89-9 may appear across multiple EU annex records. The CAS lookup page shows all Annex II–VI entries sharing this identifier, useful for identifying cross-annex regulatory status of the same chemical substance.

InventoryRef 3455119/03/2019

HYDROXYPYRIDINONE

Q: What does the restriction note for HYDROXYPYRIDINONE mean?

The restriction field for HYDROXYPYRIDINONE reads: II/1249 (hypyridinone and its salts, when used as a substance in hair dye products). This is the restriction note from the CosIng inventory. For authoritative conditions and limits, always refer to the linked annex entries.

Q: How do I check if my formula contains HYDROXYPYRIDINONE?

Use the INCI Checker tool on CosIng Checker to paste your full ingredient list and scan it against all EU annex records and allergen flags in one step.

Hydroxyl-2-pyridone

HYDROXYPYRIDINONE is linked to 1 EU annex record on this page. Inventory note: II/1249 (hypyridinone and its salts, when used as a substance in hair dye products).

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Inventory details for HYDROXYPYRIDINONE

INCI name

HYDROXYPYRIDINONE

Description

Hydroxyl-2-pyridone

Annex records for HYDROXYPYRIDINONE

Annex II Restriction reference

Entry 1249

Hydroxypyridinone and its salts, when used as a substance in hair dye products

CAS: 822-89-9

EC: 212-506-0

Key data

CAS

822-89-9

212-506-0

Restriction

II/1249 (hypyridinone and its salts, when used as a substance in hair dye products)

Function

HAIR DYEING SURFACTANT - FOAM BOOSTING

How HYDROXYPYRIDINONE appears in the CosIng inventory

The CosIng inventory lists HYDROXYPYRIDINONE as a cosmetic ingredient and this page links it to 1 annex record. The inventory entry captures names and identifiers, while the annex record shows where the substance is prohibited, restricted or positively listed in EU cosmetics law.

HYDROXYPYRIDINONE is also tagged with 2 cosmetic functions in the official data. Function labels describe intended use, but they do not replace regulatory review of linked annex records before formulation or labelling work.

Frequently asked questions

HYDROXYPYRIDINONE appears in the EU CosIng inventory and has linked annex records. Check the annex records above for applicable restrictions, concentration limits and conditions of use. Annex II listing means prohibited; Annex III means restricted; Annexes IV, V and VI mean permitted under specified conditions.

The restriction field for HYDROXYPYRIDINONE reads: "II/1249 (hypyridinone and its salts, when used as a substance in hair dye products)". This is the restriction note recorded in the CosIng inventory for this ingredient. For authoritative conditions and limits, always refer to the linked annex entries above.

According to the EU CosIng inventory, HYDROXYPYRIDINONE carries the following function designation(s):

CAS 822-89-9 may appear across multiple EU annex records. Viewing the CAS lookup page shows all Annex II–VI entries sharing this identifier, which is useful for identifying cross-annex regulatory status of the same chemical substance.

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Use the INCI Checker tool to paste your full ingredient list and scan it against all EU annex records and allergen flags in one step.

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Source note for HYDROXYPYRIDINONE

This page combines the CosIng inventory entry for HYDROXYPYRIDINONE with 1 linked Annex II–VI record from the local dataset built from public European Commission cosmetic ingredient materials.

Use this inventory page to research HYDROXYPYRIDINONE and compare linked records, but verify restrictions and legal status against the current official source text and law before making regulatory decisions.

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Tools & next steps

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