What does Sodium dithionate do?

Used in consumer products as a flavouring.

Is Sodium dithionate safe?

We haven't assessed a concern score for this ingredient yet.

beauty
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pharma

Sodium dithionate

CAS 7631-94-9

Concern score

Not assessed — no hazard data yet.

Sodium dithionate in plain language

What it is: Also known as Disodium salt dithionic acid · Dithionic acid, sodium salt (1:2) · Disodium dithionate · Sodium hyposulfate · Sodium hyposulphate · Sodium sulfate (NA2S2O6)
Show all 11 names
Dithionic acid, disodium salt (8CI) · Sodiumdithionate · UNII-RPF7Z41GAW · sodium metabisulfate · sodium metabisulphate
What it does: Used in consumer products as a flavouring.
Flavouring
Is it a concern?: We haven't assessed a concern score for this ingredient yet.

Regulation

No restrictions found. Sodium dithionate appears in these published regulatory listings.

Inactive ingredient in US drugs

Recorded in these product areas

Found in consumer products
Beauty
Cleaning

USFDAinactive ingredient database2 entries — 2 administration routes
- Route: INTRAMUSCULAR; Dosage form: INJECTION, SOLUTION; Maximum daily exposure: 48 mgSource →
- Route: INTRAVENOUS; Dosage form: INJECTION, SOLUTION; Maximum daily exposure: 48 mgSource →
USEPAcommercial use observedEPA CPDat observed this chemical in 22 composition records across product categories including Personal care. EPA CPDat classifies this chemical for functional uses including Flavouring and nutrient, Pharmaceutical, textile manufacturing.
- EPA CPDat observed this chemical in 22 composition records across product categories including Personal care. EPA CPDat classifies this chemical for functional uses including Flavouring and nutrient, Pharmaceutical, textile manufacturing.Source →
USFDAlisted in openFDA substanceopenFDA substance registry classifies this ingredient as chemical.
- openFDA substance registry classifies this ingredient as chemical.Source →

Expert safety opinions

No expert opinion on file for Sodium dithionate. These are the independent scientific bodies that assess ingredients like this one; we show an opinion only when a record we hold cites it.

SCCS
EU Scientific Committee on Consumer Safety
No SCCS opinion on file.
CIR
Cosmetic Ingredient Review (US expert panel)
No CIR safety assessment on file.

Evidence & sources

No graded research studies for Sodium dithionate yet. This record is compiled from the published data sources below — registries and regulatory listings, not study findings.

6 data sources

Where this comes from

EPA Chemical and Products Database
exposure · updated September 2013
Open →
EPA DSSTox Identifiers
chemistry · updated 2025-12-29
Open →
FDA Inactive Ingredient Database
regulatory · updated 2026-01-09
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
Open →

Suitability

Context-specific fit derived from published classifications and the current ingredient evidence profile.

Fragrance avoidance

Nothing to weigh for this context yet.

No signal in this context

We have no published hazard signal for this ingredient, so we cannot say how it behaves in this context — that is missing evidence, not a clean result.

Where it has been recorded

How often EPA CPDat has listed Sodium dithionate in a product composition. These are source records, not Greenveil catalog products.

Source records

Named organisations

Personal care

Typical roles

Flavouring

See products using Sodium dithionate →

Catalog

Found in these products

Their ingredient lists include Sodium dithionate; each product's own rating depends on its whole formula, so it is shown on the product page, not here.

See all 26 →Find products without it →