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5 Metric Ton |
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2-Hydroxy-4-Methoxy Benzophenone-5-SodiumSulfonate; Benzophenone-5 CAS: 6628-37-1 UV absorber
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Items |
Specification |
1. Appearance: |
Light yellow crystalline powder |
2. Assay (HPLC) %: |
99.0 min |
3. Melting point (°C) |
280 min |
4. Specific extinction (1%, 1cm): |
E287 ≥400 |
E325 ≥235 |
|
5. Loss on drying %: |
1.5 max |
6. pH value: |
4.8 min |
7. Turbidity in water (EBC): |
2.0 max |
8. Gardner color: |
4.0 max |
9. Heavy metal ppm: |
5 max |
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