Food use
Nothing to weigh for this context yet.
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.
- beauty
- cleaning
- industrial
1,2-Dibromo-2,4-dicyanobutane
CAS 35691-65-7
Concern score
Not assessed — no hazard data yet.
1,2-Dibromo-2,4-dicyanobutane in plain language
On cosmetic ingredient lists it appears as “Methyldibromo glutaronitrile”.
Also known as Methyldibromo glutaronitrile · Methyldibromoglutaronitrile · Bromothalonil · 2-Bromo-2-(bromomethyl)pentanedinitrile · 1,2-DIBROM-2,4-DICYANO-BUTAN · 1,2-DIBROMO 2,4-DICYANO butane
Show all 20 names
1-Bromo-1-(bromomethyl)-1,3-propanedicarbonitrile · 2-Brom-2-(brommethyl)pentandinitril · 2-Bromo-2-(bromomethyl)glutaronitrile · Bbmg · Cosmoguard · Glutaronitrile, 2-bromo-2-(bromomethyl)- · Mdbgn · Metacide 38 · Pentanedinitrile, 2-bromo-2-(bromomethyl)- · Tektamer 38 · Tektamer · Tektamer 38AD · Tuopai DM 01 · dibromodicyanobutane
Used in cosmetics as a preservative. Methyldibromo Glutaronitrile is the brominated methylene glutaronitrile.
- Preservative
- Antimicrobial
- We haven't assessed a concern score for this ingredient yet. It is listed for cosmetic use in the EU.
Regulation
No restrictions found. 1,2-Dibromo-2,4-dicyanobutane appears in these published regulatory listings.
- Found in consumer products
- Beauty
- Cleaning
- Industrial
EUCosIngActiveMethyldibromo Glutaronitrile is the brominated methylene glutaronitrile that conforms to the formula
- Methyldibromo Glutaronitrile is the brominated methylene glutaronitrile that conforms to the formulaSource →
USEPAcommercial use observedEPA CPDat observed this chemical in 71 composition records across product categories including Construction, Cleaning products and household care, Cleaning and safety. EPA CPDat classifies this chemical for functional uses including Preservative, Biocide.
- EPA CPDat observed this chemical in 71 composition records across product categories including Construction, Cleaning products and household care, Cleaning and safety. EPA CPDat classifies this chemical for functional uses including Preservative, Biocide.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 1,2-Dibromo-2,4-dicyanobutane. 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 1,2-Dibromo-2,4-dicyanobutane yet. This record is compiled from the published data sources below — registries and regulatory listings, not study findings.
Where this comes from
- Open →
CosIng
regulatory · updated 2026-09-23
- Open →
EPA Chemical and Products Database
exposure · updated december 31, 2019
- Open →
EPA DSSTox Identifiers
chemistry · updated 2025-12-29
- 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
Suitability
Context-specific fit derived from published classifications and the current ingredient evidence profile.
No signal in this context
Fragrance avoidance
Nothing to weigh for this context yet.
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 1,2-Dibromo-2,4-dicyanobutane in a product composition. These are source records, not Greenveil catalog products.
Source records
71
Named organisations
6
ConstructionCleaning products and household careCleaning and safetyIndustrial productsPersonal care
Typical roles
PreservativeAntimicrobial