Benzophenone-5
CAS Number
6628-37-1
EC Number
613-918-7
What is Benzophenone-5?
Benzophenone-5 (CAS 6628-37-1), also marketed as Cyasorb UV 284 and Uvistat 112, is a water-soluble UV absorber derived from the benzophenone family.
Where is Benzophenone-5 used?
- Personal care and cosmetics: sunscreen active and photoprotective agent in water-based lotions, gels and hair care products
- Paper and packaging coatings: prevents UV-induced yellowing and print fade
- Adhesives and sealants: stabilizes the polymer matrix against photodegradation in water-borne systems
- Printing inks and varnishes protect colorants from fading in UV-exposed packaging.
Good to know: Effective in the UVA and UVB ranges, making it suitable for aqueous systems where oil-soluble UV filters cannot be used.
Commercial specifications
- Packaging from kilogram-scale bags to bulk quantities
Other Names (Synonyms)
2-Hydroxy-4-methoxybenzophenone-5-sulfonic acid sodium salt|Cyasorb UV 284|Uvistat 112|2-Hydroxy-4-methoxybenzophenone-5-sodium sulfonate|853Z42ZYAS|sulisobenzone sodium|ASL 24ST|Benzenesulfonic acid, 5-benzoyl-4-hydroxy-2-methoxy-, sodium salt (1:1)
What are the physical properties of Benzophenone-5?
Color White to Pale Yellow
Form Solid
Log P 0.888 (est)
How is Benzophenone-5 classified and handled safely? Learn More
Warning
GHS07· Irritant
Hazard Statements
H317 May cause an allergic skin reaction
Precautionary Statements
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P272 Contaminated work clothing should not be allowed out of the workplace.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P321 Specific treatment (see … on this label).