Benzophenone-1

Benzophenone-1
chemical name: 2, 4-dihydroxy benzophenone
molecular formula: c13h10o3
molecular weight: 214.22
cas no.: 131-56-6
specification:
appearance: white or light yellow crystalline powder
assay: 99.0% min
loss on drying: 0.2% max.
melting point: 142c-146c
specific extinction (e290): 630 min.
gardner color: 3.0 max.
ph: 6
burnt residue: 0.5 max
heavy metals: 5 ppm 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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