Hydroxylammonium nitrate
Hydroxylammonium nitrate is listed in Annex II as a prohibited substance for cosmetic products placed on the EU market.
Chemical identity and properties

Hydroxylammonium nitrate
Hydroxylammonium nitrate (HAN) is the salt of hydroxylamine and nitric acid. It is being developed as a potential rocket propellant and is sometimes used in nuclear reprocessing as a plutonium reductant. Nitrite is a toxic compound known to cause methemoglobinemia. (L1137, L1628) — Toxin and Toxin Target Database (T3DB)
- IUPAC name
- hydroxylamine;nitric acid
- Molecular formula
- H4N2O4
- Molecular weight
- 96.04 g/mol
- Exact mass
- 96.01710661 Da
- Topological polar surface area
- 112.0 Ų
- Hydrogen-bond donors
- 3
- Hydrogen-bond acceptors
- 5
- Covalent units
- 2
- Defined stereocentres
- 0
Also known as
External database identifiers
- EPA DTXSID:DTXSID30884613
Retrieved from NIH PubChem on 2026-09-02 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.
Record details
Chemical name
Hydroxylammonium nitrate
Chemical / IUPAC name
Hydroxylammonium nitrate
Regulatory information
CMR
| Category | Carcinogenic | Mutagenic | Reprotoxic |
|---|---|---|---|
| Cat. 2 | ✓ | — | — |
Key data
Related records for Hydroxylammonium nitrate
Direct matches are limited for this record, so nearby entries from Annex II are shown as well.
O-Hexyl-N-ethoxycarbonylthiocarbamate
(4-Ethoxyphenyl)(3-(4-fluoro-3-phenoxyphenyl)propyl)dimethylsilane
Chlorpropham (ISO); isopropyl 3-chlorocarbanilate
Phoxim (ISO); a-(diethoxy-phosphinothioylimino) phenylacetonitrile
O-Isobutyl-N-ethoxy carbonylthiocarbamate
Glufosinate ammonium (ISO); ammonium 2-amino-4-(hydroxymethylphosphinyl)butyrate
Benfuracarb (ISO); ethyl N-[2,3-dihydro-2,2-dimethylbenzofuran-7-yloxycarbonyl(methyl)aminothio]-N-…
Reaction mass of: dimethyl (2-(hydroxymethylcarbamoyl)ethyl)phosphonate; diethyl (2-(hydroxymethylc…
Maneb (ISO); manganese ethylenebis(dithiocarbamate) (polymeric)
(4-Phenylbutyl)phosphinic acid
Mancozeb (ISO); manganese ethylenebis(dithiocarbamate) (polymeric) complex with zinc salt
Reaction mass of: 4,7-bis(mercaptomethyl)-3,6,9-trithia-1,11-undecanedithiol; 4,8-bis(mercaptomethy…
What Annex II means for Hydroxylammonium nitrate
Hydroxylammonium nitrate is listed as a prohibited substance under Annex II of EU Cosmetics Regulation 1223/2009 and must not be intentionally added. Article 17 separately addresses unintended small quantities that are technically unavoidable under good manufacturing practice and compatible with the Article 3 safety requirement.
Formulators must screen their ingredients and raw materials to ensure none contain this substance. Suppliers should provide documentation confirming absence when requested.
The page also surfaces 12 related annex records with overlapping identifiers, annex logic or naming patterns.
Compliance checklist
- Verify this substance is absent from all raw materials and finished formulations.
- Request absence confirmation or CoA from raw material suppliers.
- Document the screening result in the Product Information File (PIF).
- This substance has CMR classification. Review the CMR table above and verify current Annex II/III status before use.
Frequently asked questions
Source note for Annex II record Hydroxylammonium nitrate
This page summarizes one Annex II record for Hydroxylammonium nitrate from public European Commission cosmetic materials and adds linked inventory or identifier matches when available.
Use this record page to review Annex II conditions for Hydroxylammonium nitrate, but confirm any final regulatory decision against the current official annex wording and source files.
Tools & next steps
Check your formula
Paste a full INCI list to detect Hydroxylammonium nitrate and other flagged EU annex records in one pass.
INCI CheckerCompare entries
Compare Hydroxylammonium nitrate side by side with another annex record to review differences in restrictions, concentrations and annex placement.
CompareBrowse the annex
See all records in Annex II and compare regulatory conditions across substances in this annex.
Open Annex II