Flavors & Fragrances
REACH
Tea Tree Oil
CAS Number
68647-73-4
EC Number
285-377-1
FEMA Number
FEMA 3902
Abbreviation
TTO
What is Tea Tree Oil?
Tea Tree Oil (CAS 68647-73-4), also known as TTO and Melaleuca alternifolia essential oil, is a steam-distilled botanical extract from the leaves of the Australian tea tree.
Where is Tea Tree Oil used?
- Personal care: antimicrobial and preservative active in acne treatments and shampoos
- Pharmaceutical and OTC topical formulations: active ingredient in antifungal creams, nail treatments and wound-care preparations
- Home care and industrial cleaning: biocidal agent with fragrance benefit in surface sprays, disinfectants and laundry additives
- Oral care: mouthwashes and toothpastes use the oil where preservation and flavoring functions overlap under FEMA 3902.
Good to know: Quality is benchmarked against ISO 4730, which defines terpinen-4-ol content and composition thresholds relevant to buyer specification.
Commercial specifications
- Bulk supply in drums and IBCs; smaller packaging options for laboratory and formulation use
Other Names (Synonyms)
TEA tree essential oil|Essential oils, melaleuca alternifolia|Çay ağaci yaği|TTO
What are the physical properties of Tea Tree Oil?
Boiling Point 165 °C(lit.)
Density 0.878 g/mL at 25 °C(lit.)
Flash Point 147 °F
Color Colorless to light yellow
Odor at 100.00 %. citrus spicy terpenic nutmeg pine
Form liquid
Refractive Index n 20/D 1.478(lit.)
Which trade and regulatory codes apply to Tea Tree Oil?
Storage Class 10 - Combustible liquids
WGK (Germany) 3