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Aluminum fluoride

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Name

Aluminum fluoride

EINECS 232-051-1
CAS No. 7784-18-1 Density 3.1 g/mL at 25 °C(lit.)
PSA 0.00000 LogP -8.65050
Solubility slightly soluble in Water Melting Point 250 °C
Formula AlF3 Boiling Point 19.5 °C at 760 mmHg
Molecular Weight 83.9767 Flash Point 1250 °C
Transport Information N/A Appearance white crystalline powder, odorless
Safety 26-37/39 Risk Codes 22-36/37/38
Molecular Structure Molecular Structure of 7784-18-1 (Aluminum fluoride) Hazard Symbols IrritantXi
Synonyms

Aluminumfluoride (8CI);Aluminum trifluoride;Aluminum trifluoride (AlF3);Aluminum fluoride(AlF3);

Article Data 211

Aluminum fluoride Synthetic route

7783-54-2

nitrogen trifluoride

zeolite H-SSZ-32

7784-18-1

aluminum(III) fluoride

Conditions
ConditionsYield
In neat (no solvent) plasma react. in inductively coupled tubular reactor, temp. of reactor exterior <=180°C, 200 mg of powdered precursor in alumina boat, power of 150-200 W, chamber pressure of 250 mTorr, NF3 flow rate of 10 sccm, reaction time of 10-20 min; X-ray diffraction anal.; EDX anal.; chem. anal.;99%
16940-66-2

sodium tetrahydroborate

7446-70-0

aluminium trichloride

BF3-triglymate

A

7784-18-1

aluminum(III) fluoride

B

7647-14-5

sodium chloride

C

19287-45-7

diborane

Conditions
ConditionsYield
In further solvent(s) soln. NaBH4 in triglyme was added slowly for 2-3 h at room temp. to BF3-triglyme, AlCl3 in triglyme; B2H6 was absorbed with THF;A n/a
B n/a
C 94%
16940-66-2

sodium tetrahydroborate

7446-70-0

aluminium trichloride

BF3-tetraglymate

A

7784-18-1

aluminum(III) fluoride

B

7647-14-5

sodium chloride

C

19287-45-7

diborane

Conditions
ConditionsYield
In further solvent(s) soln. NaBH4 in triglyme was added slowly for 2-3 h at room temp. to BF3-tetraglyme, AlCl3 in triglyme; B2H6 was absorbed with THF;A n/a
B n/a
C 94%
16940-66-2

sodium tetrahydroborate

13755-29-8

sodium tetrafluoroborate

7446-70-0

aluminium trichloride

A

7784-18-1

aluminum(III) fluoride

B

7647-14-5

sodium chloride

C

19287-45-7

diborane

Conditions
ConditionsYield
In further solvent(s) soln. NaBH4 in triglyme (tetraglyme) was added slowly for 2-3 h at roomtemp. to NaBF4 and AlCl3 in triglyme (tetraglyme); B2H6 was absorbed with THF;A n/a
B n/a
C 90%
7446-70-0

aluminium trichloride

7637-07-2

boron trifluoride

A

7784-18-1

aluminum(III) fluoride

B

10294-34-5

boron trichloride

Conditions
ConditionsYield
heating with excess of BF3; condensation of BCl3 in an U-tube cooled the mixt. of CO2 and alcohol; fractionated distn.;A n/a
B 80%
heating with excess of BF3; condensation of BCl3 in an U-tube cooled the mixt. of CO2 and alcohol; fractionated distn.;A n/a
B 80%

diethylammonium tetrafluoroborate

A

7784-18-1

aluminum(III) fluoride

B

392-73-4

Diethylaminodifluoroborane

Conditions
ConditionsYield
With aluminium In further solvent(s) byproducts: H2; heating at 320-330°C;A n/a
B 72%
With Al In further solvent(s) byproducts: H2; heating at 320-330°C;A n/a
B 72%

stannous fluoride

7429-90-5

aluminium

B

7784-18-1

aluminum(III) fluoride

Conditions
ConditionsYield
In melt placing of mixt. of Al with SnF2 (molar ratio SnF2:Al=1.65) in Fluoroplast-4 ampule, closing by screwed stopper, exposition for 1.00 h at 250°C; various product ratio yields for various conditions; cooling, stirring up in water, collection, drying;A 1.5%
B n/a
79-38-9

Chlorotrifluoroethylene

7429-90-5

aluminium

A

7784-18-1

aluminum(III) fluoride

B

7782-50-5

chlorine

C

7440-44-0

pyrographite

Conditions
ConditionsYield
In neat (no solvent) Ar atmosphere; mixing (mortar and pestle method), heating from room temp. to 1000°C (10 K/min);
1333-84-2, 1344-28-1

aluminum oxide

7784-18-1

aluminum(III) fluoride

Conditions
ConditionsYield
With fluorine byproducts: O2; violent;
With hydrogenchloride; calcium fluoride In gas heating in HCl-stream;
With hydrogen fluoride In solid vaporous HF, white heat;>99
1333-84-2, 1344-28-1

aluminum oxide

75-46-7

trifluoromethan

7784-18-1

aluminum(III) fluoride

Conditions
ConditionsYield
byproducts: H2O; from Al2O3 pellets in Ni tube at 720 K for 48 h; fluorination upto 70% F content;

Aluminum fluoride Chemical Properties

Molecular Structure of Aluminum fluoride (CAS NO.7784-18-1):

IUPAC Name: trifluoroalumane
CAS Number: 7784-18-1
Molecular Formula: AlF3
Molecular Weight:83.98
H bond acceptors: 0
H bond donors: 0
Freely Rotating Bonds: 0
Polar Surface Area: 0 Å2
Flash Point: 1250°C
Enthalpy of Vaporization: 25.54 kJ/mol
Boiling Point: 19.5 °C at 760 mmHg
Vapour Pressure: 922 mmHg at 25°C
Melting Point: 250 oC
Water Solubility: Slightly soluble
Sensitive: Hygroscopic
Melting point: 250°C
Sublimation: 1250 ºC
Merck: 14,339
EINECS: 232-051-1
InChI
InChI=1/Al.3FH/h;3*1H/q+3;;;/p-3
Smiles
[Al](F)(F)F
Product Categories: Inorganics; Inorganic Fluorides; Aluminum Salts; AluminumMetal and Ceramic Science; Crystal Grade Inorganics; Metal and Ceramic Science; Salts

Aluminum fluoride Production

 The production of Aluminum fluoride (CAS NO.7784-18-1):

  Fluoride acid method will come from 18% in phosphate fluoride acid solution heated to about 78 ℃ , then add the reactor with aluminum hydroxide at 100 ℃ for the reaction of aluminum fluoride solution, centrifugation to remove hydrated silicic acid, the filtrate into the crystal device at 90 ℃ under the insulation 3 ~ 5h, have aluminum fluoride trihydrate (AIF3.3H2O) crystals.

 After centrifugal separation, the aluminum fluoride trihydrate crystals (moisture 5%) has been dealing with two boiling furnace dehydrated, the first a boiling furnace temperature was controlled at about 205 ℃, first to remove most of the water.
As a result,aluminum fluoride trihydrate the total water content (including crystal water) from 45% to 6% or so, and then in the second fluidized bed furnace in the off the rest of the water, the furnace temperature was controlled at 590 ~ 600 ℃. Dehydrated materials are cooled, the system may anhydrous aluminum fluoride.

 H2SiF6 +2 AI (OH) 3 → 2A1F3 + SiO2 +4 H2O

 AlF3 . 3H2O [△] → AlF3 +3 H2O

 France aluminum hydroxide aluminum hydroxide anhydrous hydrofluoric acid reacts with the aluminum fluoride trihydrate. Then crystallization, filtration, have aluminum fluoride trihydrate.At last by drying (burning) dehydration, obtained anhydrous aluminum fluoride.

 AI (OH) 3 +3 HF → AIF3.  3 H2O

 AlF3 . 3H2O [△] → A1F3 +3 H2O

Aluminum fluoride Toxicity Data With Reference

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
frog LDLo subcutaneous 1680mg/kg (1680mg/kg)   Comptes Rendus des Seances de la Societe de Biologie et de Ses Filiales. Vol. 124, Pg. 133, 1937.
mammal (species unspecified) LD50 intraperitoneal 1450mg/kg (1450mg/kg)   Meditsina Truda i Promyshlennaya Ekologiya. Industrial Medicine and Ecology. Vol. (7), Pg. 32, 1994.
mouse LD50 oral 103mg/kg (103mg/kg)   Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 30(4), Pg. 16, 1965.

Aluminum fluoride Consensus Reports

Reported in EPA TSCA Inventory.

Aluminum fluoride Safety Profile

A poison by ingestion. Moderately toxic by subcutaneous route. A severe eye irritant. Violently impact-sensitive when in contact with Na and K. When heated to decomposition it emits toxic fumes of F. See also FLUORIDES and ALUMINUM COMPOUNDS.
Hazard Codes: HarmfulXn,ToxicT,IrritantXi
Risk Statements: 22-36/37/38
R22:Harmful if swallowed. 
R36/37/38:Irritating to eyes, respiratory system and skin.
Safety Statements: 26-37/39
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S37/39:Wear suitable gloves and eye/face protection.
RIDADR: 3260
WGK Germany: 1
RTECS: BD0725000
Hazard Note: Highly Toxic/Irritant
HazardClass: 8
PackingGroup: III

Aluminum fluoride Standards and Recommendations

OSHA PEL: TWA 2.5 mg(F)/m3
ACGIH TLV: TWA 2.5 mg(F)/m3; BEI: 3 mg/g creatinine of fluorides in urine prior to shift; 10 mg/g creatinine of fluorides in urine at end of shift; TWA 2 mg(Al)/m3
NIOSH REL: (Fluorides, Inorganic) TWA 2.5 mg(F)/m3

Aluminum fluoride Specification

  Aluminum fluoride , with CAS number of 7784-18-1, can be called Fluorid hlinity ; Aluminumfluoride (8CI) . It is a white powder, Aluminum fluoride (CAS NO.7784-18-1) can be flux for non-ferrous metals and can be used for the system to take other aluminum fluoride.

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