Silane, tetrafluoro-

Reported in EPA TSCA Inventory.

OSHA PEL: TWA 2.5 mg(F)/m³
ACGIH TLV: TWA 2.5 mg(F)/m³; BEI: 3 mg/g creatinine of fluorides in urine prior to shift; 10 mg/g creatinine of fluorides in urine at end of shift.
NIOSH REL: (Inorganic Fluorides) TWA 2.5 mg(F)/m³
DOT Classification:  2.3; Label: Poison Gas, Corrosive

The CAS registry number of Silicon tetrafluoride is 7783-61-1. The IUPAC name is tetrafluorosilane. Its EINECS registry number is 232-015-5. In addition, the molecular formula is F₄Si and the molecular weight is 104.08. This tetrahedral molecule is notable for having a remarkably narrow liquid range (its boiling point is only 4 °C above its melting point).

Physical properties about this chemical are: (1)ACD/LogP: 4.15; (2)ACD/LogD (pH 5.5): 4.15; (3)ACD/LogD (pH 7.4): 4.15; (4)ACD/BCF (pH 5.5): 837.56; (5)ACD/BCF (pH 7.4): 837.56; (6)#Freely Rotating Bonds: 0; (7)Polar Surface Area: 0 Å²; (8)Index of Refraction: 1.207; (9)Molar Refractivity: 11.42 cm³; (10)Molar Volume: 86 cm³; (11)Polarizability: 4.52 ×10^-24cm³; (12)Surface Tension: 5.1 dyne/cm; (13)Density: 1.209 g/cm³; (14)Enthalpy of Vaporization: 17.05 kJ/mol; (15)Vapour Pressure: 26400 mmHg at 25°C.

Preparation of Silicon tetrafluoride: it is a by-product of the production of phosphate fertilizers, resulting from the attack of HF(derived from fluorapatite protonolysis) on silicates. It is prepared by heating BaSiF₆(>300 °C). In addition, the required BaSiF₆ is prepared by treating aqueous hexafluorosilicic acid with barium chloride.

Uses of Silicon tetrafluoride: it can be used to get fluorine silicate and fluoride lead. And it can be used as a stiffening agent of cement and artificial marble, also used for synthetic materials of organic silicon compounds.

When you are using this chemical, please be cautious about it as the following:
This chemical can react violently with water and can cause severe burns. If it contact with acids, it will liberate toxic gas. And it is very Toxic by inhalation, in contact with skin and if swallowed. During using it, wear suitable protective clothing, gloves and eye/face protection and avoid contact with skin and eyes. In case of accident or if you feel unwell, seek medical advice immediately (show label where possible). After using it, keep container tightly closed and in a well-ventilated place.

You can still convert the following datas into molecular structure:
(1)SMILES: F[Si](F)(F)F
(2)InChI: InChI=1/F4Si/c1-5(2,3)4
(3)InChIKey: ABTOQLMXBSRXSM-UHFFFAOYAU

The toxicity data is as follows: