The Kieselguhr, soda ash flux-calcined, with the CAS registry number 68855-54-9, is also known as Diatomaceous earth. It belongs to the product categories of UVCBs-inorganic; Diatomite; Diatomaceous Earth; Chromosorb; Supports; Adsorbents, Filter Aids and Drying Agents; Essential Chemicals; Food & Beverage; Kits for Food Analysis; Packings, Coated; SP Phases; acked GC; Carbowax Phases. Its EINECS number is 293-303-4. This chemical's molecular formula is O₂Si and formula weight is 60.084. What's more, its IUPAC name is dioxosilane. Its classification code is TSCA UVCB. It is stable at room temperature and pressure, and should be sealed and stored in cool and dry place and be protected from strong oxidizes, strong acid. It is used to synthetic resin, chemical fiber, dye, solvent and so on.

When you are using this chemical, please be cautious about it as the following:
It is harmful as it has the danger of serious damage to health by prolonged exposure through inhalation. It may cause cancer by inhalation. It is irritating to eyes, respiratory system and skin. You should not breathe dust. In case of contact with eyes, you need rinse immediately with plenty of water and seek medical advice. When using it, you should wear suitable protective clothing, gloves and eye/face protection. In case of accident or if you feel unwell seek medical advice immediately (show the label where possible).

You can still convert the following datas into molecular structure:
(1)Canonical SMILES: O=[Si]=O
(2)InChI: InChI=1S/O2Si/c1-3-2
(3)InChIKey: VYPSYNLAJGMNEJ-UHFFFAOYSA-N