- cleaning
- industrial
- pharma
Oxalic acid dihydrate
CAS 6153-56-6
Also registered as 2 other CAS numbers
2602619-84-9 · 2770108-61-5
Concern score
Not assessed — no hazard data yet.
Oxalic acid dihydrate in plain language
Also known as Dihydrate ethanedioic acid · Oxalic acid--water (1/2) · oxalic acid (dihydrate) · HO2CCO2H.2H2O · Oxalic acid (1,2-13C2) · Oxylic acid dihydrate
Show all 18 names
Oxalic acid dihydrate, 97% · Oxalicaciddihydrate · Oxalsaure dihydrate · UNII-0K2L2IJ59O · alpha oxalic acid dihydrate · dihydrate oxalic acid · ethanedioic acid, hydrate (1:2) · oxalic acid · oxalic acid di-hydrate · oxalicacid dihydrate · Oxalicum acidum · Varromed component oxalic acid dihydrate
Used in consumer products as a pH adjuster, a fragrance ingredient and a bleaching agent.
- pH adjuster
- Fragrance
- Bleaching agent
- We haven't assessed a concern score for this ingredient yet.
Regulation
No restrictions found. Oxalic acid dihydrate appears in these published regulatory listings.
- In marketed US drugs
- Found in consumer products
- Cleaning
- Industrial
USEPAcommercial use observedEPA CPDat observed this chemical in 39 composition records across product categories including Furniture and furnishings, Laboratory supplies, Cleaning and safety. EPA CPDat classifies this chemical for functional uses including Bleaching agent, Fragrance, pH regulating agent.
- EPA CPDat observed this chemical in 39 composition records across product categories including Furniture and furnishings, Laboratory supplies, Cleaning and safety. EPA CPDat classifies this chemical for functional uses including Bleaching agent, Fragrance, pH regulating agent.Source →
USFDAmarketed drug occurrenceFDA NDC lists this ingredient in 22 active drug products and 22 total products.
- FDA NDC lists this ingredient in 22 active drug products and 22 total products.Source →
USFDAlisted in openFDA substanceopenFDA substance registry classifies this ingredient as chemical.
- openFDA substance registry classifies this ingredient as chemical.Source →
Evidence & sources
No graded research studies for Oxalic acid dihydrate yet. This record is compiled from the published data sources below — registries and regulatory listings, not study findings.
Where this comes from
- Open →
EPA Chemical and Products Database
exposure · updated January 7, 2008
- Open →
EPA DSSTox Identifiers
chemistry · updated 2025-12-29
- Open →
FDA National Drug Code Directory
regulatory · updated 2027-12-31
- Open →
FDA GSRS UNII
registry · updated 2026-02-26
- Open →
openFDA Substance
registry · updated 2026-05-24
- Open →
PubChem Live Enrichment
chemistry · updated 2026-05-17
Reference links (2)
ema.europa.eu
Suitability
Context-specific fit derived from published classifications and the current ingredient evidence profile.
Fragrance avoidance
Not a strong fit for fragrance avoidance because it carries Fragrance.
The ingredient itself is a fragrance-linked signal, so it is better treated as an avoid case when fragrance exposure is the main concern.
Where it has been recorded
How often EPA CPDat has listed Oxalic acid dihydrate in a product composition. These are source records, not Greenveil catalog products.
Source records
39
Named organisations
6
Furniture and furnishingsLaboratory suppliesCleaning and safetyCleaning products and household care
Typical roles
pH adjusterFragranceBleaching agent