Description
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Material: Silicon Dioxide |
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CAS No.: 7631-86-9 |
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ITEM |
STANDARD |
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Appearance |
White powder. |
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Whiteness |
≥93% |
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Purity of SiO2 |
≥99% |
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Particle size |
14~20nm |
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PH value |
3.5-5.5 |
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Loss on drying |
≤1.0% |
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Residue on ignition |
≤2.0% |
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DBP Absorption value |
≥180ml/100g |
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BET Specific surface area |
≥175m2/g |
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Heavy metal |
≤30ppm |
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Arsenic |
≤3ppm |
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Sodium sulfate |
≤0.4% |
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Iron |
≤500ppm |
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Copper |
≤20ppm |
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Mn |
≤30ppm |
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Conclusion: |
The above product conforms to USP. Standard. |
