Substance profile

Tetrafluoroboric acid

Tetrafluoroboric acid is a colorless liquid.

CAS 16872-11-0 BF4H 87.82 g/mol Danger

01 · Identification

What Tetrafluoroboric acid is

Tetrafluoroboric acid is a colorless liquid. Its molecular formula is BF4H and its molecular weight is 87.82 g/mol. It boils at 130 °C, is very soluble in water.

Under the GHS it carries the signal word Danger. It is classed as corrosives.

CAS number16872-11-0

EC number240-898-3

Index number009-010-00-X

Molecular formulaBF4H

Molecular weight87.82 g/mol

Chemical class Corrosives

Other names for Tetrafluoroboric acid

fluoroboric acid ... %

02 · GHS classification

Hazards and label elements

Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.

Corrosion

Signal wordDanger

Hazard statements assigned to Tetrafluoroboric acid
Code	Hazard statement
H314	Causes severe skin burns and eye damage.

Precautionary statements: P260, P280, P301, P310, P331

03 · Physical and chemical properties

Tetrafluoroboric acid properties

Every value is shown with the conditions it was measured under and the source it came from. Where sources disagree, all values are listed rather than one being picked — the difference is usually a different form of the substance, not an error.

Property	Value	Conditions	Source
Boiling point	130 °C (266 °F)	decomposes	HSDB
Density	1.8 g/cm³		HSDB
	1.4 g/cm³		ICSC
	1.84 g/cm³	at 25 °C	DOE PAC
Solubility	Very soluble in water, ethanol		HSDB
Vapor pressure	5 mmHg		Haz-Map

Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.

04 · Handling and storage

Storing and handling Tetrafluoroboric acid

Storage conditions

Separated from strong bases, food and feedstuffs. Well closed. Ventilation along the floor. /table/

Source: Hazardous Substances Data Bank (HSDB)

Incompatible materials

Interaction of ... /hexafluorisopropylideneaminolithium/ with a range of chloro- and fluoro-derivatives of boron ... during warming to 25 °C tended to be violently exothermic in absence of solvent.

Source: Hazardous Substances Data Bank (HSDB)

Planning storage for a mix of chemicals? Check Tetrafluoroboric acid in the storage compatibility matrix →

Work with Tetrafluoroboric acid

ATE mixture calculator Calculate acute toxicity estimate for a mixture containing this substance. Storage compatibility What this substance must not be stored next to. Label constructor Build a compliant GHS label with these pictograms and statements.