What does the restriction note for 4,5-DIAMINO-1-METHYLPYRAZOLE HCL mean?

The restriction field for 4,5-DIAMINO-1-METHYLPYRAZOLE HCL reads: II/1217. 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 21616-59-1?

CAS 21616-59-1 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 4169915/10/2010

4,5-DIAMINO-1-METHYLPYRAZOLE HCL

Q: How do I check if my formula contains 4,5-DIAMINO-1-METHYLPYRAZOLE HCL?

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.

1H-pyrazole, 4,5-diamino-1-methyl- dihydrochloride

4,5-DIAMINO-1-METHYLPYRAZOLE HCL is linked to 1 EU annex record on this page. Inventory note: II/1217.

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Inventory details for 4,5-DIAMINO-1-METHYLPYRAZOLE HCL

INCI name

4,5-DIAMINO-1-METHYLPYRAZOLE HCL

Description

1H-pyrazole, 4,5-diamino-1-methyl- dihydrochloride

Annex records for 4,5-DIAMINO-1-METHYLPYRAZOLE HCL

Annex II Restriction reference

Entry 1217

4,5-Diamino-1-methylpyrazole and its HCl salt, when used as a substance in hair dye products

CAS: 20055-01-0 / 21616-59-1

EC: - / -

Key data

CAS

21616-59-1

—

Restriction

II/1217

Function

HAIR DYEING

How 4,5-DIAMINO-1-METHYLPYRAZOLE HCL appears in the CosIng inventory

The CosIng inventory lists 4,5-DIAMINO-1-METHYLPYRAZOLE HCL 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.

4,5-DIAMINO-1-METHYLPYRAZOLE HCL 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

4,5-DIAMINO-1-METHYLPYRAZOLE HCL 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 4,5-DIAMINO-1-METHYLPYRAZOLE HCL reads: "II/1217". 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, 4,5-DIAMINO-1-METHYLPYRAZOLE HCL carries the following function designation(s):

HAIR DYEING

CAS 21616-59-1 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 4,5-DIAMINO-1-METHYLPYRAZOLE HCL

This page combines the CosIng inventory entry for 4,5-DIAMINO-1-METHYLPYRAZOLE HCL 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 4,5-DIAMINO-1-METHYLPYRAZOLE HCL 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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