Preservatives & Biocides
REACH
2-phenylphenol
CAS Number
90-43-7
EC Number
201-993-5
E Number
E230
FEMA Number
FEMA 3959
Abbreviation
OPP
What is 2-phenylphenol?
2-Phenylphenol (CAS 90-43-7), also known as OPP, Torsite, and Rotoline, is a broad-spectrum antimicrobial active. FEMA 3959.
Where is 2-phenylphenol used?
- Post-harvest agriculture: surface treatment on citrus, pears, and other fresh produce to suppress mold and extend shelf life during storage and transit
- Pharmaceutical manufacturing: intermediate in synthesizing active compounds
- Preservative component in topical and veterinary formulations
- Personal care: disinfectant soaps, surface sanitizers, and cosmetic preservative systems
- Flavor and fragrance: contributes a faint phenolic note
- It functions as a biocide and fungicide, controlling microbial and fungal growth on surfaces, produce, and in formulated products.
Commercial specifications
- Purity grades typically range from 98% to 99%+
- Material sourced to meet regulatory requirements for food contact and agricultural use in relevant markets
- Documentation available to support compliance in regulated end-use categories
Other Names (Synonyms)
Torsite|Rotoline|Orthophenyl phenol|Ortho-phenylphenate|OPP?|O-Xonal|O-Xenol|o-phenylphenol|OPP
What are the physical properties of 2-phenylphenol?
Melting Point 59 °C
Boiling Point 286 °C
Density 1.213 g/cm³ @ Temp: 25 °C
Flash Point 255 °F
Appearance o-Phenylphenol is a white to buff-colored crystalline solid.
Color White
Odor nearly wh. or lt. buff crystals, mild char. sweetish odor
Form Crystalline Flakes
Water Solubility 0.7 g/L (20 ºC)
Vapor Pressure 7 mm Hg ( 140 °C)
Refractive Index 1.6188 (estimate)
pH 7 (0.1g/l, H2O, 20℃)
Log P 3.18 at 22.5℃
How is 2-phenylphenol classified and handled safely? Learn More
Danger
GHS05· Corrosive GHS07· Irritant GHS08· Health Hazard GHS09· Environmental Hazard
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 2-phenylphenol?
HS Code 29071900
UN Number 3077
ADR Class 9
Packing Group III
WGK (Germany) 2