INDIUM FLUORIDE Property

Melting point:

1170 °C

Boiling point:

1200 °C

Density 

4.39

Flash point:

>1200°C

solubility 

slightly soluble in H2O; soluble in dilute acid solutions

form 

Powder

color 

White

Water Solubility 

Slightly soluble in water. Freely soluble in dilute acids.

Sensitive 

Moisture Sensitive

Crystal Structure

VF3 type

crystal system

Three sides

Merck 

14,4959

Space group

R3c

Lattice constant

a/nm	b/nm	c/nm	α/o	β/o	γ/o	V/nm3
0.541	0.541	1.438	90	90	120	0.3645

Exposure limits

ACGIH: TWA 0.1 mg/m3; TWA 2.5 mg/m3
NIOSH: IDLH 250 mg/m3; TWA 0.1 mg/m3

Stability:

hygroscopic

CAS DataBase Reference

7783-52-0(CAS DataBase Reference)

EPA Substance Registry System

Indium fluoride (InF3) (7783-52-0)

Safety

Hazard Codes 

Xi,T

Risk Statements 

31-36/37/38

Safety Statements 

26-36

RIDADR 

UN2923

WGK Germany 

3

Hazard Note 

Toxic

TSCA 

Yes

HazardClass 

8

PackingGroup 

II

HS Code 

28261990

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P302+P352IF ON SKIN: wash with plenty of soap and water.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

INDIUM FLUORIDE Chemical Properties,Usage,Production

Chemical Properties

-40 mesh with 99.999% purity; white powder(s); hygroscopic; stable in hot and cold H2O [STR93] [MER06] [CER91]. very sparingly soluble in water (in contrast to InF3 ? 3 H2O) although readily soluble in dilute acids. Reduced to almost pure InF3 by a very slow stream of hydrogen at 300°C; a fast stream of the latter reduces it to the metal. M.p. 1170°C, b.p. >1200°C; d 4.39. Solubility in water at room temperature: 0.040 g/100 ml.

Uses

Indium(III) fluoride is employed in the synthesis of non-oxide glasses. It promotes chemoselective addition of TMSCN to aldehydes forming the respective cyanohydrins.

Uses

Employed in the synthesis of non-oxide glasses. Promotes chemoselective addition of TMSCN to aldehydes forming the respective cyanohydrins.

Synthesis

1. Thermal decomposition of (NH4)3InFs in a stream of fluorine gas. A small sintered corundum vessel containing (NH4)3InFs is placed in a nickel tube and heated in a fluorine stream to constant weight.
(NH4)3(InFe) = InF3 + 3 NH4F
2. A small sintered alumina vessel containing In2O3 is fluorinated in a quartz tube (in an apparatus similar to that used for the preparation of TIF3). After gentle initial heating, the reaction proceeds (occasionally with incandescence) without additional supply of heat. The progress of the conversion may be checked since the yellow oxide becomes colorless and an increase in volume takes place simultaneously. To obtain a completely oxide-free preparation the product must be kept for several hours at 500°C in a nickel tube, while a stream of fluorine is passed over it.
2In2O3 + 6F2 = 4InF3 + 3O2