IUPAC: Tetrakis(prop-2-enyl)silane 
Synonyms: Tetra(2-propenyl)silane ; Tetraallylsilane ; Tetrakis(2-propenyl)silane ; Tetraallylsilane,98%
Molecular Formula: C₁₂H₂₀Si
Molecular Weight: 192.37 
Melting point: <0°C
Flash Point: 67.2°C  
Boiling Point: 208.7°C at 760 mmHg  
Density: 0.792 g/cm³
The appearance of Tetraallylsilane (1112-66-9) is Clear colorless to faintly yellow liquid. 
The molecular structure of Tetraallylsilane (1112-66-9):

Tetraallylsilane (1112-66-9) can be prepared from a silicon tetrahalide,such as silicon tetrachloride,and an allyl halide,such as allyl bromide,by the Grignard reaction.For example, allyl bromide can be reacted with magnesium in ether solution to form allyl magnesium bromide.The ether solution of this product is then reacted with silicon tetrachloride,preferably in the mol ratio of at least four mols of the allyl compound to one mol of the silicon compound.

Hazard Codes: Xi
Risk Statements: 36/37/38
R36/37/38: Irritating to eyes, respiratory system and skin
Safety Statements:  23-24/25
S23: Do not breathe vapour
S24/25: Avoid contact with skin and eyes
WGK Germany:  3
F: 10-23
TSCA: No

1. Handling and Storage 
Handling: Wash thoroughly after handling. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation.  Do not pressurize, cut, weld, braze,solder, drill, grind, or expose empty containers to heat, sparks or open flames.
Storage: Store in a cool, dry place,keep away from heat, sparks, and flame. Keep away from sources of ignition. Store in a cool, dry, well-ventilated area away from incompatible substances.