Hydrofluoric acid

Hydrofluoric acid
Baw-an-stick model o hydrogen fluoride	Baw-an-stick model o watter
Baw-an-stick model o the fluoride anion	Baw-an-stick model o the hydronium cation
Names
	Ither names Fluorhydric acid; Hydronium fluoride
Identifiers
CAS Nummer	7664-39-3 ;
3D model (JSmol)	Interactive eemage;
ChEBI	CHEBI:29228 ;
ChemSpider	14214 ;
EC Nummer	231-634-8
RTECS nummer	MW7875000
UNII	RGL5YE86CZ ;
	InChI InChI=1S/FH/h1H Key: KRHYYFGTRYWZRS-UHFFFAOYSA-N ; InChI=1/FH/h1H Key: KRHYYFGTRYWZRS-UHFFFAOYAC;
	SMILES F;
Properties
Chemical formula	HF
Molar mass	nae applicable; (see hydrogen fluoride)
Appearance	Colourless solution
Density	1.15 g/mL (for 48% soln.)
Meltin pynt	Nae applicable; (see hydrogen fluoride)
Bylin pynt	Nae applicable; (see hydrogen fluoride)
Solubility in watter	Miscible.
Acidity (pKa)	3.17
Hazards
Safety data sheet	duPont MSDS
EU clessification	T+ C
R-phrases	R26/27/28, R35
S-phrases	(S1/2), S7/9, S26, S36/37, S45
NFPA 704	0 4 0 ACID
Flash pynt	Non-flammable
Relatit compoonds
Ither anions	Hydrochloric acid; Hydrobromic acid; Hydroiodic acid
Relatit compoonds	Hydrogen fluoride
	Except whaur itherwise notit, data are gien for materials in thair staundart state (at 25 °C [77 °F], 100 kPa).
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	Infobox references

Hydrofluoric acid is a solution o hydrogen fluoride (HF) in watter. It is a precursor tae awmaist aw fluorine compoonds, includin pharmaceuticals sic as fluoxetine (Prozac), diverse materials sic as PTFE (Teflon), an elemental fluorine itsel. It is a colourless solution that is heichly corrosive, capable o dissolvin mony materials, especially oxides. Its ability tae dissolve gless haes been kent syne the 17t century, even afore Carl Wilhelm Scheele prepared it in lairge quantities in 1771.^[2] Acause o its heich reactivity taewart gless an moderate reactivity taewart mony metals, hydrofluoric acid is uisually stored in plastic containers (awtho PTFE is slichtly permeable tae it).^[3]

Hydrogen fluoride gas is an acute pushion that mey immediately an permanently damage buffs an the corneas o the een. Aqueous hydrofluoric acid is a contact-pushion wi the potential for deep, ineetially painless burns an ensuin tissue daith. Bi interferin wi bouk calcium metabolism, the concentratit acid mey an aa cause seestemic toxicity an eventual cardiac arrest an fatality, efter contact wi as little as 160 cm² (25 squerr inches) o skin.

References eedit

↑ Harris, Daniel C. (2010). Quantitative Chemical Analysis (8th international ed.). New York: W. H. Freeman. pp. AP14. ISBN 1429263091.
↑ Greenwood, Norman N.; Earnshaw, Alan (1984). Chemistry of the Elements. Oxford: Pergamon Press. p. 921. ISBN 0-08-022057-6. Cite has empty unkent parameter: |1= (help)
↑ Aigueperse, J. et al. (2005) "Fluorine Compounds, Inorganic" in Ullmann’s Encyclopedia of Industrial Chemistry, Wiley-VCH, Weinheim, doi:10.1002/14356007.a11_307

[1] Harris, Daniel C. (2010). Quantitative Chemical Analysis (8th international ed.). New York: W. H. Freeman. pp. AP14. ISBN 1429263091.

[2] Greenwood, Norman N.; Earnshaw, Alan (1984). Chemistry of the Elements. Oxford: Pergamon Press. p. 921. ISBN 0-08-022057-6. Cite has empty unkent parameter: |1= (help)

[Ullmann-3] Aigueperse, J. et al. (2005) "Fluorine Compounds, Inorganic" in Ullmann’s Encyclopedia of Industrial Chemistry, Wiley-VCH, Weinheim, doi:10.1002/14356007.a11_307

[2]

[3]

[1]