What does Acetic anhydride do?

Used in consumer products as a flavouring.

Is Acetic anhydride safe?

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

food
industrial
pharma

Acetic anhydride

CAS 108-24-7

Also registered as 3 other CAS numbers

98006-45-2 · 285977-77-7 · 285977-78-8

Concern score

Not assessed — no hazard data yet.

Acetic anhydride in plain language

What it is: Also known as Acetic acid, 1,1'-ANHYDRIDE · Anhydride acetic acid · acetyl acetate · Acetanhydride · Acetic oxide · Acetyl anhydride
Show all 21 names
Acetyl ether · Acetyl oxide · Anhydrid kyseliny octove · Anhydride acetique · Anidride acetica · Azijnzuuranhydride · Ethanoic anhydride · Essigsaeureanhydrid · Ethanoic anhydrate · Octowy bezwodnik · acetic anhydride (sara iii) · acetic anhydride (cercla) · acetic anhydride (cercla) ld50 (oral rat): 1800 mg/kg · acetic auhydride · anhidrido acetico
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. Acetic anhydride appears in these published regulatory listings.

Inactive ingredient in US drugs

Recorded in these product areas

Found in consumer products
Pharma
Food
Industrial

USFDAinactive ingredient database2 entries — 2 administration routes
- Route: INTRAVENOUS; Dosage form: INJECTION; Potency: NASource →
- Route: ORAL; Dosage form: TABLET, EXTENDED RELEASE; Potency: 0.11 mgSource →
USEPAcommercial use observedEPA CPDat observed this chemical in 26 composition records across product categories including Laboratory supplies, Home maintenance, Food and drug. EPA CPDat classifies this chemical for functional uses including Flavouring and nutrient.
- EPA CPDat observed this chemical in 26 composition records across product categories including Laboratory supplies, Home maintenance, Food and drug. EPA CPDat classifies this chemical for functional uses including Flavouring and nutrient.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 Acetic anhydride. These are the independent scientific bodies that assess ingredients like this one; we show an opinion only when a record we hold cites it.

JECFA
Joint FAO/WHO Expert Committee on Food Additives
No JECFA evaluation on file.
EFSA
European Food Safety Authority
No EFSA opinion on file.

Evidence & sources

No graded research studies for Acetic anhydride 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 January 7, 2008
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.

Food use

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.

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 Acetic anhydride in a product composition. These are source records, not Greenveil catalog products.

Source records

Named organisations

Laboratory suppliesHome maintenanceFood and drugIndustrial products

Typical roles

Flavouring

See products using Acetic anhydride →