Molecular Structure of Bis(trimethylsilyl)sulfate (CAS NO.18306-29-1):

IUPAC Name: Bis(trimethylsilyl) sulfate 
Molecular Formula: C₆H₁₈O₄SSi₂
Molecular Weight: 242.44
EINECS: 242-192-0 
Melting Point: 41-44 °C(lit.)
Index of Refraction: 1.425
Molar Refractivity: 59.63 cm³
Molar Volume: 232.8 cm³
Surface Tension: 23.3 dyne/cm
Density: 1.041 g/cm³
Flash Point: 72.2 °C
Enthalpy of Vaporization: 45.7 kJ/mol
Boiling Point: 239.4 °C at 760 mmHg
Vapour Pressure: 0.0622 mmHg at 25 °C
storage temp.: Refrigerator (+4 °C) + Flammables area
Sensitive: Moisture Sensitive
Appearance: beige to brownish low melting crystals
Canonical SMILES: C[Si](C)(C)OS(=O)(=O)O[Si](C)(C)C
InChI: InChI=1S/C6H18O4SSi2/c1-12(2,3)9-11(7,8)10-13(4,5)6/h1-6H3
InChIKey: KRUQDZRWZXUUAD-UHFFFAOYSA-N
Product Categories: Si (Classes of Silicon Compounds); Silicon Compounds (for Synthesis); Silyl Esters; Si-O Compounds; Synthetic Organic Chemistry

 Bis(trimethylsilyl)sulfate (CAS NO.18306-29-1) is used to remove fluoride ion from water.

Safety Information of Bis(trimethylsilyl)sulfate (CAS NO.18306-29-1):
Hazard Codes: F,C
Risk Statements: 11-34 
R11:Highly flammable. 
R34:Causes burns.
Safety Statements: 16-26-36/37/39-45-9-33-25 
S16:Keep away from sources of ignition. 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection. 
S45:In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) 
S9:Keep container in a well-ventilated place. 
S25:Avoid contact with eyes. 
S33:Take precautionary measures against static discharges.
RIDADR: UN 2925 4.1/PG 2
WGK Germany: 3
F: 3-10-21
HazardClass: 4.1
PackingGroup: III 

 Bis(trimethylsilyl)sulfate (CAS NO.18306-29-1), its Synonyms are Bistrimethylsilylsulfate ; Silanol, trimethyl-,1,1'-sulfate ; Silanol,trimethyl-, sulfate (2:1) (8CI,9CI) ; Sulfuric acid bis(trimethylsilyl) ester ; Sulfuric acid, TMS .