Benzophenone-3

Benzophenone-3
chemical name: 2-hydroxy-4-methoxy benzophenone
molecular formula: c14h12o3
molecular weight: 228.24
cas no.: 131-57-7
specification:
appearance: white or light yellow crystalline powder
loss on drying: 0.2% max.
assay: 99.0% min.
heavy metals: 5 ppm max.
melting point: 62.0-65.0c
burnt residue: 0.1 max
uv absorbance max @288 nm: 630 min.
uv absorbance max @325 nm: 410 min.
total aerobic count: 100 cfu/g max
total leaf mold: 300 cfu/g max
package: 25kg cardboard drum or 20kg carton
storage: preserve in tight, light-resistent containers
shelf life: 2 years
uv-light absorber series
they are kind of broad-spectrum ultraviolet absorber, owns characteristics such as: high absorption efficiency, innocuity, good stability to heat, light. As the type I sunscreen agent approved by fda in the us, it can absorb uv-a and uv-b at the same time. It is widely used in the sunfast cream, sunfast milk, sunfast latex, sunfast oil etc.
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