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359963

Sigma-Aldrich

Boron trifluoride dihydrate

96%

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Synonym(s):
Boron fluoride dihydrate, Trifluoroborane dihydrate
Linear Formula:
BF3 · 2H2O
CAS Number:
Molecular Weight:
103.84
MDL number:
UNSPSC Code:
12352106
PubChem Substance ID:
NACRES:
NA.22

Quality Level

Assay

96%

form

liquid

reaction suitability

core: boron
reagent type: Lewis acid
reagent type: catalyst

refractive index

n20/D 1.316 (lit.)

density

1.636 g/mL at 25 °C (lit.)

SMILES string

[H]O[H].[H]O[H].FB(F)F

InChI

1S/BF3.2H2O/c2-1(3)4;;/h;2*1H2

InChI key

MJCYPBSRKLJZTB-UHFFFAOYSA-N

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Application

Boron trifluoride dihydrate can be used as:
  • An activator in Pechmann condensation to synthesize 4-methylcoumarin derivatives by the reaction between substituted phenols and methyl acetoacetate.
  • An initiator for the polymerization of benzoxazine.
  • A catalyst in the regioselective Fries rearrangement of phenolic esters to give hydroxyphenyl alkyl/aryl ketones.
  • A catalyst to prepare 8-hydroxymethyltricyclene acetate by the reaction between camphene and formaldehyde in the presence of methylene chloride-acetic anhydride solvent.

Signal Word

Danger

Hazard Statements

Hazard Classifications

Acute Tox. 2 Inhalation - Acute Tox. 4 Oral - Eye Dam. 1 - Skin Corr. 1A - STOT RE 2 Inhalation - STOT SE 3

Target Organs

Kidney, Respiratory system

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

危险化学品

Certificates of Analysis (COA)

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Terpene-formaldehyde reactions. II. d-Limonene
Blomquist AT and Himics RJ
The Journal of Organic Chemistry, 33(3), 1156-1159 (1968)
Cationic polymerization of benzoxazine monomers by boron trifluoride complex.
Cid JA, et al.
Polymers & Polymer Composites, 7(6), 409-420 (1999)
BF3-H2O catalyzed Fries rearrangement of phenolic esters
Prakash GKS, et al.
Catalysis Letters, 114(1), 24-29 (2007)
Pechmann reaction promoted by boron trifluoride dihydrate.
Stoyanov E and Mezger J.
Molecules (Basel), 10(7), 762-766 (2005)
Diego Méndez et al.
Biochemical pharmacology, 183, 114341-114341 (2020-11-17)
Platelets are the smallest blood cells, and their activation (platelet cohesion or aggregation) at sites of vascular injury is essential for thrombus formation. Since the use of antiplatelet therapy is an unsolved problem, there are now focused and innovative efforts

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