Sulisobenzone
CAS Number
4065-45-6
EC Number
223-772-2
What is Sulisobenzone?
Sulisobenzone (CAS 4065-45-6), also marketed as Benzophenone-4, is a water-soluble UV absorber that protects formulations and substrates from UV-induced degradation.
Where is Sulisobenzone used?
- Personal care: UV protection in sunscreens, hair care and leave-on formulations in water-based systems
- Coatings and inks: prevents photodegradation of pigments and binders in aqueous coatings, paper coatings and packaging inks
- Adhesives and sealants: stabilizes water-borne polymer matrices against UV-driven yellowing and embrittlement
- Textile treatment liquors: protects dyed fabrics from light-induced colour fading
- Its water solubility distinguishes it from most benzophenone-series UV filters.
Good to know: Its water solubility distinguishes it from most benzophenone-series UV filters, making it suitable where oil-free or aqueous systems are required.
Other Names (Synonyms)
Benzophenone-4|5-benzoyl-4-hydroxy-2-methoxybenzenesulfonic acid|3-benzoyl-4-hydroxy-6-methoxybenzenesulfonic acid|2-hydroxy-4-methoxybenzophenone-5-sulfonic acid|2-benzoyl-5-methoxy-1-phenol-4-sulfonic acid|Sungard|Uval|Seesorb 101S
What are the physical properties of Sulisobenzone?
Melting Point 145 °C
Boiling Point 491 °C
Density 1.4574 (rough estimate)
Flash Point 0°C
Appearance white to yellowish powder
Color White to Off-White
Form neat
Water Solubility 300.92g/L at 25℃
Vapor Pressure 0Pa at 25℃
Refractive Index 1.5300 (estimate)
Log P 0.515 at 25℃
How is Sulisobenzone classified and handled safely? Learn More
Danger
GHS05· Corrosive GHS07· Irritant
Hazard Statements
H315 Causes skin irritation
H317 May cause an allergic skin reaction
H318 Causes serious eye damage
H319 Causes serious eye irritation
H335 May cause respiratory irritation
Precautionary Statements
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P264 Wash … thoroughly after handling.
P271 Use only outdoors or in a well-ventilated area.
P272 Contaminated work clothing should not be allowed out of the workplace.
Which trade and regulatory codes apply to Sulisobenzone?
HS Code 29144000
WGK (Germany) 1