appearance : white or light yellow crystalline powder
melting point : 62.0 ~ 65.0℃
it is an ultraviolet absorber with high efficiency, no toxicity, no
teratogenesis and good light/thermal stability, it can absorb both the
uv-a and uv-b, it is approved by american fda as the type i sunscreen
agent widely used in the us and europe. it is also protective to pvc and unsaturated polyester.