4-tert-butylphenol
CAS Number
98-54-4
EC Number
202-679-0
FEMA Number
FEMA 3918
Abbreviation
PTBP
What is 4-tert-butylphenol?
4-tert-Butylphenol (CAS 98-54-4), abbreviated PTBP, is an alkylphenol intermediate used in resin synthesis, fragrance manufacturing and polymer stabilization.
Where is 4-tert-butylphenol used?
- Phenolic resins: chain-stopping agent
- UV absorbers and antioxidants: building block
- PTBP-formaldehyde resins serve as tackifiers in neoprene-based contact adhesives
- Rubber and leather: bonding agents
- Coatings and lubricant additives: precursor to antioxidants and extreme-pressure packages
- Fragrances: phenolic modifier (FEMA 3918) for leather, floral and animalic nuances
- In UV stabilizer production it acts as a starting material for benzophenone-type absorbers.
Commercial specifications
- Purity typically 99% minimum, technical grade
- Bags, drums and isotanks for molten material
Other Names (Synonyms)
4-(1,1-Dimethylethyl)phenol|p-tert-Butylphenol|PTBP|para-tertiary-butylphenol|p-t-Butyl phenol|Butylphen|4-t-Butylphenol|Phenol, p-tert-butyl-
What are the physical properties of 4-tert-butylphenol?
Melting Point 98 °C
Boiling Point 237 °C
Density 0.9 g/cm³
Flash Point 113 °C
Appearance The butylphenols include several isomers. Solid butylphenols (28805-86-9) generally have properties similar to the above:
Color White to light beige
Odor at 1.00 % in propylene glycol. oakmoss leather
Form Flakes or Pastilles
Water Solubility 8.7 g/L (20 ºC)
Vapor Pressure 1 mm Hg ( 70 °C)
Refractive Index 1.4787
pH 7 (10g/l, H2O, 20℃)
Log P 3 at 23℃
How is 4-tert-butylphenol classified and handled safely? Learn More
Danger
GHS05· Corrosive GHS08· Health Hazard GHS09· Environmental Hazard GHS07· Irritant
Hazard Statements
H314 Causes severe skin burns and eye damage
H315 Causes skin irritation
H317 May cause an allergic skin reaction
H318 Causes serious eye damage
Precautionary Statements
P203 Obtain, consult and follow expert instructions for use.
P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P264 Wash … thoroughly after handling.
Which trade and regulatory codes apply to 4-tert-butylphenol?
HS Code 29071900
UN Number 3077
ADR Class 9
Packing Group III
Storage Class 11 - Combustible Solids
WGK (Germany) 2