What is the NOAEL for Nitrous acid?
Nitrous acid has 4 NOAEL studies in the database. The lowest reported value is T2I5UM75DN UNII. Source: openFDA substances.
NOAEL Data
Cosmetic Ingredient
Nitrous acid
Also known as: EINECS 231-963-7, Kyselina dusite, UNII-T2I5UM75DN, HNO2, [NO(OH)]
CAS 7782-77-6
Nitrous acid (CAS 7782-77-6) is a chemical substance. Key regulatory status: 2 regulatory/inventory lists, cosmetic ingredient cross-reference; source data from EPA ToxValDB, EPA CPDat.
Cross-Vertical Regulatory Divergence
Nitrous acid is classified GHS Danger (H300, H314, H318, H400) in the chemicals database but is allowed in EU cosmetics.
SOURCE
Cross-vertical comparison
Cosmetics: ingredients.eu_status; Chemicals: ghs_classifications.signal_word/hazard_statement_code
SOURCE
noael studies public
NOAEL studies
4
SOURCE
chemical inventory jurisdictions
Regulatory lists
2
SOURCE
eu clp annex vi
GHS signal
Not classified
Chemical Identity
CAS, identifiers, formula, and alternate names for the matched substance record.
SOURCE
DSSTox identifiers
11 fields
Name
Nitrous acid
CAS Number
7782-77-6
DTXSID
DTXSID7064813
Molecular Formula
HNO2
InChI Key
IOVCWXUNBOPUCH-UHFFFAOYSA-N
Monoisotopic Mass
47.000728
Synonyms
EINECS 231-963-7Kyselina dusiteUNII-T2I5UM75DNHNO2[NO(OH)]
Regulatory Lists
Inventory, screening, and regulatory list matches from public chemical databases.
SOURCE
EPA CPDat
2 records
| List | Keyword | Source |
|---|---|---|
| Canada; pharmaceutical | DrugBank | DrugBank |
| Canada; pharmaceutical | DrugBank | DrugBank |
NOAEL Studies
Toxicology endpoints rendered from public NOAEL study rows.
SOURCE
NOAEL studies
Showing 4 of 4 studies
| Value | Unit | Endpoint | Route | Species | Source |
|---|---|---|---|---|---|
| T2I5UM75DN | UNII | FDA UNII substance identifier | - | - | openFDA substances |
| T2I5UM75DN | UNII | FDA UNII substance identifier | - | - | openFDA substances |
| T2I5UM75DN | UNII | FDA UNII substance identifier | - | - | openFDA substances |
| T2I5UM75DN | UNII | FDA UNII substance identifier | - | - | openFDA substances |
Showing 4 of 4 studies
Cosmetic Safety Profile
Same-CAS cosmetic ingredient record for cross-vertical context.
SOURCE
CosIng / Ingredients DB
EU Status
permitted
Max
-
Category
Humectants
Pharmaceutical Data
Same-CAS pharmaceutical records from drug and bioactivity sources.
SOURCE
EMBL-EBI ChEMBL
NITROUS ACID
ChEMBL Phase
4
Adverse Events
0
Bioactivity
0
Frequently Asked Questions
What regulatory lists include Nitrous acid?
Nitrous acid appears on 1 regulatory/inventory list including Canada; pharmaceutical. Source: EPA CPDat.
Is Nitrous acid used in cosmetics?
Yes, Nitrous acid is also indexed as a cosmetic ingredient under the name NITROUS ACID. View the full cosmetic safety profile on the ingredient page for detailed safety data, SCCS opinions, and regulatory status.
Where does the safety data for Nitrous acid come from?
Safety data is sourced from EPA ToxValDB, EPA CPDat, EPA DSSTox, CosIng / Ingredients DB, ChEMBL / DailyMed. All data traces to primary regulatory sources and is updated from official government databases.
Does Nitrous acid have different safety status in cosmetics vs industrial chemicals?
Nitrous acid is classified GHS Danger (H300, H314, H318, H400) in the chemicals database but is allowed in EU cosmetics.
Is Nitrous acid used outside industrial chemicals?
Nitrous acid also appears in cosmetics, pharmaceutical databases.