IARC Cancer Review: Group 3 IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 7 ,1987,p. 341.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) ; Animal Inadequate Evidence IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 42 ,1988,p. 209.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) ; Human Inadequate Evidence IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 42 ,1988,p. 209.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) . Reported in EPA TSCA Inventory.

For occupational chemical analysis use OSHA: #ID-125 g or NIOSH: 1994: Silica, Amorphous, 7501.

The Silicondioxide, with the CAS registry number 112945-52-5, is also known as Cab-O-grip II . It belongs to the product category of UVCBs-inorganic. Its IUPAC name is called dioxosilane. This chemical's classification codes are Insecticide; Mutation data; Tumor data. This chemical should be closed in a cool dry environment.

Physical properties of Silicondioxide: (1)#H bond acceptors: 2; (2)#H bond donors: 0; (3)#Freely Rotating Bonds: 0; (4)Polar Surface Area: 34.14 Å²; (5)Melting Point: >1600 °C; (6)Density: 2.3 lb/cu.ft at 25 °C (bulk density)(lit.); (7)Refractive Index: n20/D 1.46(lit.); (8)Form: Powder.

Uses of Silicondioxide: it can be used to manufacture glass ceramics, abrasives, oil decolorization, purification ferrosilicon, and analysis the determination of boron, arsenic and silver. It also can be used for TLC system boards.

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

The toxicity data is as follows:

Organism	Test Type	Route	Reported Dose (Normalized Dose)	Effect	Source
rat	LD50	intravenous	15mg/kg (15mg/kg)	LUNGS, THORAX, OR RESPIRATION: ACUTE PULMONARY EDEMA	Bolletino della Societe Italiana di Biologia Sperimentale. Vol. 44, Pg. 1685, 1968.
rat	LD50	oral	3160mg/kg (3160mg/kg)		Agricultural Research Service, USDA Information Memorandum. Vol. 20, Pg. 9, 1966.
rat	LDLo	intraperitoneal	50mg/kg (50mg/kg)		Archiv fuer Hygiene und Bakteriologie. Vol. 136, Pg. 1, 1952.
rat	LDLo	intratracheal	10mg/kg (10mg/kg)		Archiv fuer Hygiene und Bakteriologie. Vol. 136, Pg. 1, 1952.