Chlorothymol

AKA: 4-Chloro-2-isopropyl-5-methylphenol, 89-68-9, 6-Chlorothymol, 4-Chlorothymol, Chlorthymol, Phenol, 4-Chloro-6-isopropyl-3-methylphenol
Synthetic
Preservative
Not Clean
Phenol, 4-chloro-5-methyl-2-(1-methylethyl)-
Formula
C10H13ClO
Mol. Weight
184.66
CAS #
89-68-9
Form
Liquid
Functions
Antimicrobial
Keeps your product from growing bacteria, mold, or yeast. Without these, that jar of cream becomes a petri dish in about a week.
Antiplaque
Denaturant
Deodorant
Oral Care
Fights Bacteria
Traditional Use
A halogenated derivative of thymol (derived from thyme) created synthetically in the early-to-mid 20th century. Designed to enhance the antimicrobial properties of natural thymol for use in skincare and oral care products.
EWG
4
CIR
Safe as used
Pregnancy
Caution
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Skin Types
all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Caution
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing
🛡️Safety-assessed2 reviews
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR