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Indicators
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Appearance：white or light green crystal powder
Melting point： 62.0-65.0 ℃
Loss on drying： ≤ 0.2%
Content： ≥ 99.0%
Heavy metal： ≤ 5ppm
Ignition residue： <0.1%
Mucedine： <100CFU
Total number of bacterium： <300CFU, no checking salmonella and colibacillus
Specific absorptivity(288nm)： ≥ 630
Nontoxicity: no thrill for skin.
Packing：paper drum 25kg/ drum
Storage: airproof and avoid light
Use：it is wide ultraviolet absorbent. It has many features including notoriety, heat stability and others. It has protection function for PVC and unsaturated polyester
Valid period：2 years
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