What does the restriction note for BASIC BLUE 9 mean?

The restriction field for BASIC BLUE 9 reads: II/1306. This is the restriction note from the CosIng inventory. For authoritative conditions and limits, always refer to the linked annex entries.

What other records share CAS 61-73-4?

CAS 61-73-4 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 3206815/10/2010

BASIC BLUE 9

Q: How do I check if my formula contains BASIC BLUE 9?

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.

Phenothiazin-5-ium, 3,7-bis(dimethylamino)-, chloride (CI 52015)

BASIC BLUE 9 is linked to 1 EU annex record on this page. Inventory note: II/1306.

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Inventory details for BASIC BLUE 9

INCI name

BASIC BLUE 9

INN name

methylthioninum chloride

Ph. Eur. name

methylthioninii chloridum

Description

Phenothiazin-5-ium, 3,7-bis(dimethylamino)-, chloride (CI 52015)

Annex records for BASIC BLUE 9

Annex II Restriction reference

Entry 1306

Phenothiazin-5-ium, 3,7-bis(dimethylamino)- and its salts, when used as a substance in hair dye pro…

CAS: 61-73-4

EC: 200-515-2

Key data

CAS

61-73-4

200-515-2

Restriction

II/1306

Function

HAIR DYEING

How BASIC BLUE 9 appears in the CosIng inventory

The CosIng inventory lists BASIC BLUE 9 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.

BASIC BLUE 9 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

BASIC BLUE 9 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 BASIC BLUE 9 reads: "II/1306". 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, BASIC BLUE 9 carries the following function designation(s):

HAIR DYEING

CAS 61-73-4 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.

View CAS records

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 BASIC BLUE 9

This page combines the CosIng inventory entry for BASIC BLUE 9 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 BASIC BLUE 9 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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Scan a full INCI list to detect BASIC BLUE 9 and any linked EU annex restrictions or allergen flags.

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Search similar ingredients

Find other inventory ingredients and annex entries related to BASIC BLUE 9, its identifiers or nearby name variants.