Benzophenone-6
CAS Number
131-54-4
EC Number
205-027-3
Abbreviation
BP-6
What is Benzophenone-6?
Benzophenone-6 (CAS 131-54-4), also known as BP-6, is a UV absorber used to protect materials from photodegradation caused by ultraviolet radiation.
Where is Benzophenone-6 used?
- Coatings and industrial paints: prevents yellowing and gloss loss on exterior surfaces exposed to sunlight
- Plastics and polymers: extends service life of films and molded parts
- Packaging materials: UV stability as a key performance requirement
- Printing inks: preserves color integrity and prevents substrate degradation under intense UV exposure
- Personal care: evaluated for sunscreen and photoprotective products
- It absorbs UV energy before it can break down polymers or active ingredients.
Good to know: Provides broad UV absorption across both UVA and UVB ranges.
Commercial specifications
- Purity typically 98% or higher
- Cosmetic grade meeting relevant regulatory and purity standards
- Quality confirmed by HPLC for batch consistency
Other Names (Synonyms)
Methanone, bis(2-hydroxy-4-methoxyphenyl)-|2,2'-Dihydroxy-4,4'-dimethoxybenzophenone|Bis(2-hydroxy-4-methoxyphenyl)methanone|Cyasorb UV 12|Uvinul D 49|Caswell No. 353C|Benzophenone, 2,2′-dihydroxy-4,4′-dimethoxy-|BP-6
What are the physical properties of Benzophenone-6?
Melting Point 139.5 °C
Boiling Point 377.26°C (rough estimate)
Density 1.2662 (rough estimate)
Appearance Yellow crystalline powder
Color Pale Yellow to Light Yellow
Form Solid
Water Solubility negligible
Refractive Index 1.5000 (estimate)
Log P 3.9-4.1
How is Benzophenone-6 classified and handled safely? Learn More
Warning
GHS07· Irritant GHS09· Environmental Hazard
Hazard Statements
H315 Causes skin irritation
H319 Causes serious eye irritation
H335 May cause respiratory irritation
H411 Toxic to aquatic life with long lasting effects
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.
P273 Avoid release to the environment.
Which trade and regulatory codes apply to Benzophenone-6?
HS Code 29145090
Storage Class 11 - Combustible Solids
WGK (Germany) 3