Solvents
REACH
Tetralin
CAS Number
119-64-2
EC Number
204-340-2
Abbreviation
THN
What is Tetralin?
Tetralin (CAS 119-64-2), also known by the abbreviation THN, is a bicyclic hydrocarbon solvent derived from partial hydrogenation of naphthalene.
Where is Tetralin used?
- Printing inks and packaging coatings: dissolves high-molecular-weight resins for smooth, durable films with extended open time
- Adhesives and sealants: improves tack and flow in rubber-based systems where slower solvent release is critical to bond performance
- Coatings: tail solvent that reduces surface defects
- It prevents blushing and cratering during film formation.
- Personal care: trace-level fragrance component with mild naphthalenic character
Good to know: Technical grade is the primary commercial specification, with purity typically 99% or above; specialty fragrance-grade material is available for personal care where tighter impurity limits are required.
Commercial specifications
- Purity typically 99% or above (technical grade)
- Clear liquid in standard industrial drum and IBC quantities
Other Names (Synonyms)
tetralene|naphthalene 1,2,3,4-tetrahydride|1,2,3,4-Tetrahydronaphthalene|Tetranap|Tetraline|Naphthalene, 1,2,3,4-tetrahydro-|Tetralina|THN
What are the physical properties of Tetralin?
Melting Point -35.8 °C
Boiling Point 207.6 °C @ Press: 760 Torr
Density 0.9702 g/cm³ @ Temp: 20 °C
Flash Point 171 °F
Appearance colourless liquid with a mouldy smell
Color Colorless
Odor pungent menthol odor
Form Fluid
Water Solubility INSOLUBLE
Vapor Pressure 0.18 mm Hg ( 20 °C)
Refractive Index n 20/D 1.541(lit.)
Log P 3.78 at 23℃
How is Tetralin classified and handled safely? Learn More
Warning
GHS07· Irritant GHS09· Environmental Hazard GHS08· Health Hazard GHS06· Toxic
Hazard Statements
H227 Combustible liquid
H304 May be fatal if swallowed and enters airways
H312 Harmful in contact with skin
H315 Causes skin irritation
Precautionary Statements
P203 Obtain, consult and follow expert instructions for use.
P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
Which trade and regulatory codes apply to Tetralin?
HS Code 29029010
UN Number 3082
ADR Class 9
Packing Group III
Storage Class 10 - Combustible liquids
WGK (Germany) 2