Specification :

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.

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.
Benzophenone-4

Chemical Name: 2-Benzoyl-5-methoxy-1-phenol-4-sulphonic acid
Molecular Formula: C14H11O6S
Molecular Weight: 308.31
CAS No: 4065-45-6

Specification:
Appearance: White or light yellow crystalline powder
Assay: 99.0% min.
Heavy metals: 5ppm max.
Colour ( Gardner-10% aqueous solution) : 1.0 max.
Loss on drying: 140C.
Turbidity in water ( EBC) : 1.5 max
Package: 25kg net cardboard drum
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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