CAS No.7664-39-3,Hydrofluoric acid Suppliers,MSDS download

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Basic Information

Molecular Structure:
CAS No.:	7664-39-3
Name:	Hydrofluoric acid
Article Data:	1188
Cas Database

Formula:	HF
Molecular Weight:	20.0063
Synonyms:	Rubigine;Fluorwaterstof;Hydrofluoric acid;Fluoric acid;Fluorowodor;hydrogen Fluoride;Hydrofluoride;fluorhydric acid;hydrogen fluorid;HYDROFLUORIC ACID;hydrofluoric;antisal2b;
EINECS:	231-634-8
Density:	1.15 g/mL at 25 °C(lit.)
Melting Point:	-35 °C
Boiling Point:	19.538 °C at 760 mmHg
Flash Point:	112 °C
Solubility:	soluble in water
Appearance:	colourless gas with a pungent odour
Hazard Symbols:	T, C. T+, Xn
Risk Codes:	26/27/28-35-36/37/38-20/21/22
Safety:	26-36/37/39-45-7/9-36/37-28-36
Transport Information:	UN 1790 8/PG 2
PSA:	0.00000
LogP:	0.53270

Synthetic route

: rubidium fluoride

: sodium paratungstate

: 7664-39-3
hydrogen fluoride

Conditions

Conditions	Yield
In melt	100%
In melt	100%

: potassium fluoride

: 7664-39-3
hydrogen fluoride

Conditions

Conditions	Yield
With oxalic acid In water byproducts: potassium oxalate; evapn. twice with satd. soln. of oxalic acid;	100%
With oxalic acid In water byproducts: potassium oxalate; evapn. twice with satd. soln. of oxalic acid;	100%
With carbon dioxide In water absorption of CO2 from air;
In water electrodialysis;
With CO2 In water absorption of CO2 from air;

: potassium fluoride

: sodium paratungstate

: 7664-39-3
hydrogen fluoride

Conditions

Conditions	Yield
In melt	100%
In melt	100%

: sodium paratungstate

: lithium fluoride

: 7664-39-3
hydrogen fluoride

Conditions

Conditions	Yield
In melt	100%
In melt	100%

: sodium paratungstate

: sodium fluoride

: 7664-39-3
hydrogen fluoride

Conditions

Conditions	Yield
In melt	100%
In melt	100%

: sodium paratungstate

: 13400-13-0
cesium fluoride

: 7664-39-3
hydrogen fluoride

Conditions

Conditions	Yield
In melt	100%
In melt	100%

: 368-39-8
triethyloxonium fluoroborate

: 82113-65-3
bis(trifluoromethanesulfonyl)amide

A: 945614-34-6
triethyloxonium bis(trifluoromethylsulfonyl)imide

B: 7664-39-3
hydrogen fluoride

C: 7637-07-2
boron trifluoride

Conditions

Conditions	Yield
at 75 - 80℃; for 3h;	A 100% B n/a C n/a

...Expand

: 54566-80-2
Pentafluoroethyl-(1,2,2,2-tetrafluoro-1-trifluoromethyl-ethyl)-amine

A: 2344-11-8
perfluoro(4-methyl-3-aza-2-pentene)

B: 7664-39-3
hydrogen fluoride

Conditions

Conditions	Yield
in presence of (CH3)3N, 25°C, 3 h;	A 99% B n/a
in presence of (CH3)3N, 25°C, 3 h;	A 99% B n/a

: 368-40-1
triethylsulfonium tetrafluoroborate

: 82113-65-3
bis(trifluoromethanesulfonyl)amide

A: 945614-34-6
triethyloxonium bis(trifluoromethylsulfonyl)imide

B: 7664-39-3
hydrogen fluoride

C: 7637-07-2
boron trifluoride

Conditions

Conditions	Yield
at 75 - 80℃; for 3h;	A 97.9% B n/a C n/a

...Expand

: 368-39-8
triethyloxonium fluoroborate

: H[perfluoroethyltrifluoroborate]

A: 945614-32-4
triethyloxonium tris(pentafluoroethyl)trifluorophosphate

B: 7664-39-3
hydrogen fluoride

C: 7637-07-2
boron trifluoride

Conditions

Conditions	Yield
at 75 - 80℃; for 3h; Product distribution / selectivity;	A 95.7% B n/a C n/a

...Expand

Raw Materials

3352-57-6

368-39-8

1333-74-0

677-67-8

71-43-2

13709-86-9

7790-94-5

71-55-6

Downstream Products

507-20-0

98-82-8

358-15-6

421-05-6

527-84-4

406-20-2

1868-98-0

307-35-7

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Consensus Reports

EPA Extremely Hazardous Substances List. Community Right-To-Know List. EPA Genetic Toxicology Program. Reported in EPA TSCA Inventory.

Standards and Recommendations

OSHA PEL: TWA 3 ppm; STEL 6 ppm (F)
ACGIH TLV: CL 3 ppm (F); BEI: 3 mg/g creatinine of fluorides in urine prior to shift; 10 mg/g creatinine of fluorides in urine at end of shift.
DFG MAK: 3 ppm (2.5 mg/m³); BAT 7.0 mg/g creatinine in urine at end of shift
NIOSH REL: (HF) TWA 2.5 mg(F)/m³; CL 5.0 mg(F)/m³/15M
DOT Classification: 8; Label: Corrosive, Poison

Analytical Methods

For occupational chemical analysis use NIOSH: Fluorides, 7902; Acids, Inorganic, 7903.

Specification

Hydrofluoric acid (CAS NO.7664-39-3) is a chemical compound with the formula HF. It is the principal industrial source of fluorine, often in the aqueous form as hydrofluoric acid. The hot, gaseous it is either absorbed in water or liquefied; refrigeration is employed to obtain the anhydrous product needed for fluorocarbon manufacture and other uses. Although it is corrosive, concentrations of 60% and above can be handled in steel at lower temperatures; load, carbon and special alloys are also used in the process equipment.It is A solution of hydrogen fluoride in water. It is a colorless fuming liquid which can cause painful burns.

Physical properties about Hydrofluoric acid are:
(1)mp: -35°C; (2)bp: 105°C; (3)density: 1.15 g/mL at 25 °C(lit.); (4)vapor density: 1.27 (vs air); (5)vapor pressure: 25 mm Hg ( 20 °C); (6)Fp: 112°C; (7)Water Solubility: soluble; (8)Sensitive:Hygroscopic; (9)Merck:14,479

Preparation of Hydrofluoric acid:
Hydrofluoric acid is produced by treatment of the mineral fluorite (CaF₂) with concentrated sulfuric acid. When combined at 265 °C, these two substances react to produce hydrogen fluoride and calcium sulfate according to the following chemical equation:
CaF₂ + H₂SO₄→ 2 HF + CaSO₄Uses of Hydrofluoric acid:
Hydrofluoric acid is the precursor to many important compounds including pharmaceuticals and polymers (e.g. Teflon). HF is widely used in the petrochemical industry and a component of many superacids. HF boils just below room temperature whereas the other hydrogen halides condense at much lower temperatures. Unlike the other hydrogen halides, HF is lighter than air and its odour is particularly penetrating, which can damage the lungs. Hydrofluoric acid is used to prepare fluorocarbons and one:third of the total goes to the aluminum industry, where synthetic cryolite, sodium aluminum fluoride, is a major constituent of the electrolyte. It is also consumed in the melting and refining of secondary aluminum. Other uses of hydrofluoric acid are found in the metals and petroleum industries.

When you are using Hydrofluoric acid, please be cautious about it as the following:
1.In case of contact with eyes, rinse immediately with plenty of water and seek medical advice;
2.Wear suitable protective clothing, gloves and eye/face protection;
3.In case of accident or if you feel unwell, seek medical advice immediately (show label where possible);

You can still convert the following datas into molecular structure:
(1)InChI=1S/FH/h1H;
(2)InChIKey=KRHYYFGTRYWZRS-UHFFFAOYSA-N;
(3)SmilesF;

The toxicity data of Hydrofluoric acid is as follows:

Organism	Test Type	Route	Reported Dose (Normalized Dose)	Effect	Source
frog	LDLo	subcutaneous	112mg/kg (112mg/kg)		Comptes Rendus des Seances de la Societe de Biologie et de Ses Filiales. Vol. 124, Pg. 133, 1937.
guinea pig	LC50	inhalation	4327ppm/15M (4327ppm)	SENSE ORGANS AND SPECIAL SENSES: LACRIMATION: EYE LUNGS, THORAX, OR RESPIRATION: RESPIRATORY DEPRESSION	American Industrial Hygiene Association Journal. Vol. 24, Pg. 253, 1963.
human	LCLo	inhalation	50ppm/30M (50ppm)		"Toxicology of Drugs and Chemicals," Deichmann, W.B., New York, Academic Press, Inc., 1969Vol. -, Pg. 318, 1969.
man	TCLo	inhalation	100mg/m3/1M (100mg/m3)	LUNGS, THORAX, OR RESPIRATION: COUGH SENSE ORGANS AND SPECIAL SENSES: OTHER CHANGES: OLFACTION SENSE ORGANS AND SPECIAL SENSES: CONJUNCTIVE IRRITATION: EYE	Journal of Industrial Hygiene. Vol. 16, Pg. 129, 1934.
man	TDLo	oral	143mg/kg (143mg/kg)	VASCULAR: BP LOWERING NOT CHARACTERIZED IN AUTONOMIC SECTION CARDIAC: ARRHYTHMIAS (INCLUDING CHANGES IN CONDUCTION) KIDNEY, URETER, AND BLADDER: "CHANGES IN TUBULES (INCLUDING ACUTE RENAL FAILURE, ACUTE TUBULAR NECROSIS)"	Journal of Toxicology, Clinical Toxicology. Vol. 35, Pg. 307, 1997.
monkey	LC50	inhalation	1774ppm/1H (1774ppm)	LUNGS, THORAX, OR RESPIRATION: CYANOSIS GASTROINTESTINAL: OTHER CHANGES BEHAVIORAL: COMA	Aerospace Medical Research Laboratory Report. Vol. TR-70-77, Pg. 1970,
mouse	LC50	inhalation	342ppm/1H (342ppm)	LUNGS, THORAX, OR RESPIRATION: DYSPNEA SENSE ORGANS AND SPECIAL SENSES: CORNEAL DAMAGE: EYE SENSE ORGANS AND SPECIAL SENSES: OTHER: EYE	Journal of Combustion Toxicology. Vol. 3, Pg. 61, 1976.
mouse	LDLo	skin	500mg/kg (500mg/kg)	BEHAVIORAL: TREMOR PERIPHERAL NERVE AND SENSATION: SPASTIC PARALYSIS WITH OR WITHOUT SENSORY CHANGE LUNGS, THORAX, OR RESPIRATION: RESPIRATORY DEPRESSION	Sangyo Igaku. Japanese Journal of Industrial Health. Vol. 17, Pg. 281, 1975.
rabbit	LCLo	inhalation	260mg/m3/7H (260mg/m3)		AMA Archives of Industrial Hygiene and Occupational Medicine. Vol. 2, Pg. 716, 1950.
rat	LC50	inhalation	1276ppm/1H (1276ppm)	GASTROINTESTINAL: CHANGES IN STRUCTURE OR FUNCTION OF SALIVARY GLANDS BEHAVIORAL: CHANGES IN MOTOR ACTIVITY (SPECIFIC ASSAY) SENSE ORGANS AND SPECIAL SENSES: LACRIMATION: EYE	American Industrial Hygiene Association Journal. Vol. 33, Pg. 661, 1972.
rat	LDLo	intraperitoneal	25mg/kg (25mg/kg)		Toxicology and Applied Pharmacology. Vol. 13, Pg. 76, 1968.