Is NITROUS ACID safe to use in EU cosmetics?

NITROUS ACID is listed in the EU CosIng ingredient inventory with no direct annex restriction records linked at this time. Always verify against the current official CosIng database before formulating.

What other records share CAS 7782-77-6?

CAS 7782-77-6 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 9847007/07/2020

NITROUS ACID

Q: How do I check if my formula contains NITROUS ACID?

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.

Nitrous Acid is the acid that conforms to the formula:

NITROUS ACID is listed in the EU CosIng inventory, but no direct annex records are linked on this page yet.

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Inventory details for NITROUS ACID

INCI name

NITROUS ACID

Description

Nitrous Acid is the acid that conforms to the formula:

Annex records for NITROUS ACID

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Key data

CAS

7782-77-6

231-963-7

Restriction

—

Function

HUMECTANT SOLVENT

How NITROUS ACID appears in the CosIng inventory

The CosIng inventory lists NITROUS ACID as a cosmetic ingredient and this page links it to 0 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.

NITROUS ACID 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

NITROUS ACID is listed in the EU CosIng ingredient inventory with no direct annex restriction records linked at this time. Absence of an annex link does not guarantee unrestricted use — always verify against the current official CosIng database before formulating.

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

CAS 7782-77-6 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 NITROUS ACID

This page reproduces the CosIng inventory entry for NITROUS ACID from public European Commission cosmetic ingredient materials and shows linked identifiers even when no direct annex match is currently attached.

Use this inventory page to research NITROUS ACID 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

Check your formula

Scan a full INCI list to detect NITROUS ACID 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 NITROUS ACID, its identifiers or nearby name variants.