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O-CYMEN-5-OL

CAS 3228-02-2 · 20/100 · High conf.

Also registered as 1 other CAS number

39660-61-2

O-CYMEN-5-OL chemical structure

Concern score

20/100Minor concern based on regulatory listings.
High confidence

O-CYMEN-5-OL in plain language

What it is

On cosmetic ingredient lists it appears as “Isopropyl cresols”.

Also known as Isopropyl cresols · O-Cymen-5y-ol · 3-Methyl-4-isopropylphenol · 4-Isopropyl-m-cresol · 3-METHYL-4-(PROPAN-2-YL)BENZOLOL · 3-Methyl-4-(propan-2-yl)phenol

Show all 22 names

3-methyl-4-propan-2-ylphenol · 4-I-PROPYL-3-METHYLPHENOL · CYMEN-5-OL, o- · Dekacymen · P-thymol · 1-Hydroxy-3-methyl-4-isopropylbenzene · 2-CYMEN-5-OL · 3-METHYL-4-(1-METHYLETHYL)PHENOL · 4-ISOPROPYL-3-METHYL-PHENOL · 4-Isopropyl-3-methylphenol · 4-Isopropyl-5-methylphenol · Biosol · Frecide · Isopropylmethylphenol · NORO-X Foaming HandSoap · Phenol, 3-methyl-4-(1-methylethyl)-

What it does

Used in cosmetics as a preservative, an antimicrobial and a deodorant.

  • Preservative
  • Antimicrobial
  • Deodorant
Is it a concern?
Minor concern: no hazard classifications on record. It is listed for cosmetic use in the EU.

What the listings say

Permitted, with conditions — O-CYMEN-5-OL appears on published "allowed" regulatory lists rather than on a restriction list.

4-Isopropyl-m-cresol is listed in Annex V of the EU Cosmetics Regulation (EC) 1223/2009 (preservatives allowed in cosmetic products).

The score describes this ingredient's chemical identity — its hazard profile from published classifications and regulatory status — not the safety of any product it appears in.

Regulation

No restrictions found. O-CYMEN-5-OL appears in these published regulatory listings.

  • In marketed US drugs
  • EU Annex V — permitted preservative
  • EU permitted preservative

Recorded in these product areas

  • Found in consumer products
  • Beauty
  • Cleaning
  • EUCosIngActive2 entries
    • Cosmetics Regulation annex V / ref 38.Source →
    • o-Cymen-5-ol is the substituted phenol that conforms to the formula: Restriction: V/38Source →
  • EUECallowed_listedAnnex V of EU Cosmetics Regulation (EC) 1223/2009: preservatives allowed in cosmetic products. Maximum concentration: 0.1%
    • Annex V of EU Cosmetics Regulation (EC) 1223/2009: preservatives allowed in cosmetic products. Maximum concentration: 0.1%Source →
  • USEPAcommercial use observedEPA CPDat observed this chemical in 91 composition records across product categories including Personal care. EPA CPDat classifies this chemical for functional uses including Biocide, Preservative, Deodorizer.
    • EPA CPDat observed this chemical in 91 composition records across product categories including Personal care. EPA CPDat classifies this chemical for functional uses including Biocide, Preservative, Deodorizer.Source →
  • USFDAmarketed drug occurrenceFDA NDC lists this ingredient in 2 active drug products and 2 total products.
    • FDA NDC lists this ingredient in 2 active drug products and 2 total products.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 O-CYMEN-5-OL. 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 O-CYMEN-5-OL yet. This record is compiled from the published data sources below — registries and regulatory listings, not study findings.

8 data sources

Where this comes from

  • CosIng

    regulatory · updated 2026-09-23

    Open →

  • EU CosIng Cosmetics Regulation Annexes

    regulatory · updated 2010-10-16

    Open →

  • EPA Chemical and Products Database

    exposure · updated October 2015

    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

    Open →
Reference links (1)

Suitability

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

Food use

Food-use source coverage is present in the current record.

Good fit

The ingredient appears in food-oriented source coverage or allowed-use references, which makes food use easier to support than a context with no domain signal at all.

Fragrance avoidance

No fragrance-linked caution surfaced in the current profile.

Good fit

This ingredient does not currently read as a fragrance-linked driver in the published evidence and hazard profile.

Where it has been recorded

How often EPA CPDat has listed O-CYMEN-5-OL in a product composition. These are source records, not Greenveil catalog products.

Source records

91

Named organisations

6

Personal care

Typical roles

PreservativeAntimicrobialDeodorant
See products using O-CYMEN-5-OL →

Catalog

Found in these products

Their ingredient lists include O-CYMEN-5-OL; each product's own rating depends on its whole formula, so it is shown on the product page, not here.

See all 56 →Find products without it →