What other records share CAS 85-86-9?

CAS 85-86-9 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 3274414/08/2020

CI 26100

Q: What does the restriction note for CI 26100 mean?

The restriction field for CI 26100 reads: IV/51 (CI 26100) II/1353 (Solvent Red 23; CI 26100: 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 CI 26100?

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.

1-(4-(Phenylazo)phenylazo)-2-naphthol

CI 26100 is linked to 2 EU annex records on this page. Inventory note: IV/51 (CI 26100) II/1353 (Solvent Red 23; CI 26100: when used as a substance in hair dye products).

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Inventory details for CI 26100

INCI name

CI 26100

Description

1-(4-(Phenylazo)phenylazo)-2-naphthol

Annex records for CI 26100

Annex II Restriction reference

Entry 1353

1-((4-Phenylazo)phenylazo)-2-naphthol (Solvent Red 23; CI 26100) when used as a substance in hair d…

CAS: 85-86-9

EC: 201-638-4

Annex IV Restriction reference

Entry 51

CI 26100 /SOLVENT RED 23

CAS: 85-86-9

EC: 201-638-4

Key data

CAS

85-86-9

201-638-4

Restriction

IV/51 (CI 26100) II/1353 (Solvent Red 23; CI 26100: when used as a substance in hair dye products)

Function

COLORANT

How CI 26100 appears in the CosIng inventory

The CosIng inventory lists CI 26100 as a cosmetic ingredient and this page links it to 2 annex records. The inventory entry captures names and identifiers, while the annex records show where the substance is prohibited, restricted or positively listed in EU cosmetics law.

CI 26100 is also tagged with 1 cosmetic function 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

CI 26100 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 CI 26100 reads: "IV/51 (CI 26100) II/1353 (Solvent Red 23; CI 26100: 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, CI 26100 carries the following function designation(s):

COLORANT

CAS 85-86-9 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 CI 26100

This page combines the CosIng inventory entry for CI 26100 with 2 linked Annex II–VI records from the local dataset built from public European Commission cosmetic ingredient materials.

Use this inventory page to research CI 26100 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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