Skip to content
  • beauty
  • industrial

1,3-Dioxan-5-ol, 2-(phenylmethyl)-

CAS 2135553-39-6

Also registered as 1 other CAS number

4740-79-8

Concern score

Not assessed — no hazard data yet.

1,3-Dioxan-5-ol, 2-(phenylmethyl)- in plain language

What it is

On cosmetic ingredient lists it appears as “Phenylacetaldehyde glyceryl 1,3-CYCLIC acetal”.

Also known as Phenylacetaldehyde glyceryl 1,3-CYCLIC acetal · 5-HYDROXY-2-BENZYL-1,3-DIOXANE · 1,3-HYACINTH acetal · 2-Benzyl-1,3-dioxan-5-ol · 2-Benzyl-1,3-dioxan-5-ol; 1,3-O-Phenethylideneglycerol · m-Dioxan-5-ol, 2-benzyl-

What it does

Used in cosmetics as a fragrance ingredient.

  • Perfuming
  • Fragrance
Is it a concern?
We haven't assessed a concern score for this ingredient yet. It is listed for cosmetic use in the EU.

Regulation

No restrictions found. 1,3-Dioxan-5-ol, 2-(phenylmethyl)- appears in these published regulatory listings.

Recorded in these product areas

  • Found in consumer products
  • Industrial
  • EUCosIngActiveListed in CosIng inventory for cosmetic use.
    • Listed in CosIng inventory for cosmetic use.Source →
  • USEPAcommercial use observedEPA CPDat observed this chemical in 0 composition records across product categories including unclassified products. EPA CPDat classifies this chemical for functional uses including Fragrance.
    • EPA CPDat observed this chemical in 0 composition records across product categories including unclassified products. EPA CPDat classifies this chemical for functional uses including Fragrance.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 1,3-Dioxan-5-ol, 2-(phenylmethyl)-. 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 1,3-Dioxan-5-ol, 2-(phenylmethyl)- yet. This record is compiled from the published data sources below — registries and regulatory listings, not study findings.

5 data sources

Where this comes from

  • CosIng

    regulatory · updated 2026-09-23

    Open →
  • EPA Chemical and Products Database

    exposure · updated 2020-03-19

    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 →
Reference links (1)
Openfda substance

thegoodscentscompany.com

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.

Avoid

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 1,3-Dioxan-5-ol, 2-(phenylmethyl)- in a product composition. These are source records, not Greenveil catalog products.

Named organisations

2

Typical roles

PerfumingFragrance
See products using 1,3-Dioxan-5-ol, 2-(phenylmethyl)- →