Benzophenone CAS#119-61-9
High Stability and Purity – Exists as stable, colorless rhombic prismatic crystals, ensuring reliable performance in various applications.
Excellent Solubility in Organic Solvents – Readily dissolves in organic solvents while remaining insoluble in water, making it versatile for formulation processes.
Key Industrial Applications – Widely used as a photoinitiator in UV-curable printing inks and coatings, as well as an intermediate in pharmaceuticals and agricultural chemicals.
Fragrance and Fixative Properties – Serves in the perfume industry as a fixative and floral-scented fragrance, enhancing product aroma and longevity.
Benzophenone CAS#119-61-9
Diphenyl ketone (benzophenone, C6H5COC6H5, C13H10O, Mr 182.22) primarily exists in a stable form as colorless rhombic prismatic crystals, though several less stable forms with lower melting points are also known. It is insoluble in water but dissolves readily in organic solvents. Diphenyl ketone, along with its substituted derivatives, is mainly utilized as a photoinitiator in UV-curable printing inks and coatings. Additionally, it serves as an intermediate in the production of pharmaceuticals and agricultural chemicals. In the fragrance industry, benzophenone functions as both a fixative and a floral-scented fragrance component.
Benzophenone Chemical Properties
| Melting point | 47-51 °C (lit.) |
| Boiling point | 305 °C (lit.) |
| bulk density | 700kg/m3 |
| density | 1.11 |
| vapor density | 4.21 (vs air) |
| vapor pressure | 1 mm Hg ( 108 °C) |
| refractive index | 1.5893 |
| FEMA | 2134 | BENZOPHENONE |
| Fp | >230 °F |
| storage temp. | Store below +30°C. |
| solubility | ethanol: soluble100mg/mL, clear, colorless (80% ethanol) |
| form | Crystalline Powder or Flakes |
| color | White to off-white |
| Odor | Characteristic. |
| Odor Type | balsamic |
| biological source | synthetic |
| Water Solubility | insoluble (<0.1 g/100 mL at 25 ºC) |
| Merck | 141,098 |
| JECFA Number | 831 |
| BRN | 1238185 |
| Dielectric constant | 13.0（20℃） |
| Stability: | Stable. Incompatible with strong oxidizing agents, strong reducing agents. Combustible. |
| Cosmetics Ingredients Functions | LIGHT STABILIZER |
| FRAGRANCE | |
| InChIKey | RWCCWEUUXYIKHB-UHFFFAOYSA-N |
| LogP | 3.18 at 25℃ |
| CAS DataBase Reference | 119-61-9(CAS DataBase Reference) |
| IARC | 2B (Vol. 101) 2013 |
| NIST Chemistry Reference | Benzophenone(119-61-9) |
| EPA Substance Registry System | Benzophenone (119-61-9) |
Safety Information
| Hazard Codes | Xi,N,Xn,F |
| Risk Statements | 36/37/38-52/53-50/53-67-65-62-51/53-48/20-11-40 |
| Safety Statements | 26-61-37/39-29-60-36-62-36/37-33-16-9 |
| RIDADR | UN 3077 9/PG 3 |
| WGK Germany | 2 |
| RTECS | DI9950000 |
| F | 10 |
| TSCA | Yes |
| HazardClass | 9 |
| PackingGroup | III |
| HS Code | 29143900 |
| Hazardous Substances Data | 119-61-9(Hazardous Substances Data) |
| Toxicity | LD50 orally in Rabbit: > 10000 mg/kg LD50 dermal Rabbit 3535 mg/kg |
Product Application of Benzophenone CAS#119-61-9
Benzophenone compounds are widely used in sunscreen cosmetics, which remain a leading segment in the beauty industry. Nearly all commercially available sunscreens incorporate benzophenone derivatives to protect the skin from harmful UV radiation, making it a key ingredient in high-value products. In recent years, the consumption of benzophenone in cosmetics has continued to grow steadily. Research indicates that fluorescent light can also emit harmful UV rays, prompting the use of benzophenone to expand into additional cosmetic applications such as hair conditioners, lotions, and lipsticks.
Beyond sun protection, benzophenone is employed as a fragrance fixative, imparting a sweet and spicy aroma in perfumes and soaps. For example, Banana Boat has developed a UVA-absorbing technology called AvoTriplex, which is based on benzophenone. The formula includes stabilizers to prevent benzophenone degradation under sunlight, along with enhancers that work synergistically to optimize its sunscreen performance.
