Molecular Formula: BF₃H₄O₂
Molar mass: 103.84 g/mol
EINECS: 231-569-5
Density: 1.636 g/mL at 25 °C(lit.)
Index of Refraction: n20/D 1.316(lit.)
Boiling Point: 58-60 °C (1.5 mmHg)
Vapour Pressure: 39100 mmHg at 25°C
Melting point: 6 °C
Water solubility: Miscible
Appearance: Colourless liquid
Product categories of Boron trifluoride dihydrate (13319-75-0): Pharmaceutical Intermediates;Lewis Acids;Synthetic Reagents;Catalysis and Inorganic Chemistry;Boron
Structure of Boron trifluoride dihydrate (13319-75-0):

H-Bond Donor: 2
H-Bond Acceptor: 5
Systematic Name: Trifluoroborane dihydrate 
SMILES: FB(F)F.O.O 
InChI: InChI=1/BF3.2H2O/c2-1(3)4;;/h;2*1H2 
InChIKey: MJCYPBSRKLJZTB-UHFFFAOYAC 
Std. InChI: InChI=1S/BF3.2H2O/c2-1(3)4;;/h;2*1H2 
Std. InChIKey: MJCYPBSRKLJZTB-UHFFFAOYSA-N

 Boron trifluoride dihydrate (13319-75-0) is used as a catalyst in chemical reactions.

Moderately toxic by inhalation. A corrosive irritant. When heated to decomposition it emits toxic vapors of B and F⁻.
 

Hazard Codes: C,T
Risk Statements:
20:  When using, do not eat or drink
22:  Do not breathe dust
23:  Do not breathe gas/fumes/vapor/spray (appropriate wording to be specified by the manufacturer)
25:  Toxic if swallowed
34:  Causes burns
35:  Causes severe burns
48:  Danger of serious damage to health by prolonged exposure
Safety Statements:
23:  Toxic by inhalation
26:  Very Toxic by inhalation
27:  Very Toxic in contact with skin 
28A     After contact with skin, wash immediately with plenty of water.
36:  Wear suitable protective clothing 
37:  Wear suitable gloves
39:  Wear eye/face protection
45:  In case of accident or if you feel unwell, seek medical advice immediately (show label where possible)

DOT Classification:  8; Label: Corrosive

 Boron trifluoride dihydrate (13319-75-0) also can be called Trifluoroborane dihydrate ; Boron fluoride dihydrate ;and Borane, trifluoro-, dihydrate .It may be corrosive to skin, eyes and mucous membranes and may be toxic by inhalation.Upon contact with water, steam or when heated to decomposition, it will produce toxic fluoride fumes. Incompatible with alkyl nitrates, calcium oxide. Reaction with alkali metals or alkaline earth metals (except magnesium) will cause incandescence.