| CAS No.: | 7631-86-9 |
|---|---|
| EINECS: | 231-545-4 |
| Appearance: | Powder |
| Usage: | Pharmaceutical Excipients |
| Color: | White |
| Mf: | O2si |
| Samples: |
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| Customization: |
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Colloidal Silicon Dioxide is a submicroscopic fumed silica prepared by the vapor-phase hydrolysis of a silicon compound.
When ignited at 1000° for 2 h, it contains NLT 99.0% and NMT 100.5% of SiO.
In the pharmaceutical industry, silicon dioxide (also known as colloidal silicon dioxide) has many uses in tablet-making, including as an anti-caking agent, adsorbent, disintegrant, or glidant to allow powder to flow freely when tablets are processed. These compounds appear to be biologically inert.
Natural biological structure, high purity, strong surface activity, good dispersion and high specific surface area
| Tests | Specification | Result | |||
| Apperance | Light, white powder of extreely fine particle size | Conforms | |||
| Identification | Conforms | Conforms | |||
| Assay,% | 99.0-100.5 | 99.9 | |||
| PH | 3.5~5.5 | 4.3 | |||
| Loss on igntion, % | 2 Max | 1.2 | |||
| Loss on drying, % | 2.5 Max | 0.9 | |||
| The total aerobic microbial count, Cfu/g |
1000 Max | Conforms | |||
| The total combined molds and yeasts count, Cfu/g |
100 Max | Conforms | |||
| Escherichia coli | Can not be detected | Conforms | |||
| Conclusion | It conforms to USP | ||||
10kg/Bag
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