ALUMINUM ANTIMONIDE Property

Melting point:

1050°C

Density 

4.260

form 

Pieces

color 

brown cubic crystals, crystalline

Crystal Structure

Cubic, Sphalerite Structure - Space Group F(-4)3m

Exposure limits

ACGIH: TWA 0.5 mg/m3
NIOSH: IDLH 50 mg/m3; TWA 0.5 mg/m3

CAS DataBase Reference

25152-52-7(CAS DataBase Reference)

EPA Substance Registry System

Aluminum, compd. with antimony (1:1) (25152-52-7)

Safety

RIDADR 

UN1549

TSCA 

Yes

HazardClass 

6.1

PackingGroup 

III

HS Code 

2853909090

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Hazard statements

H302Harmful if swallowed

H332Harmful if inhaled

H411Toxic to aquatic life with long lasting effects

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P270Do not eat, drink or smoke when using this product.

P304+P340IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.

ALUMINUM ANTIMONIDE Chemical Properties,Usage,Production

Chemical Properties

Crystalline solid.

Uses

In semiconductor technology

Uses

In semiconductor research.

Production Methods

To grow single crystals, Al and Sb are mixed stoichiometrically in the Al2O3 boat and melted, followed by pulling up of a single crystal using the Czochralski method. Melted Al is oxidized easily and various methods, like rotation of a crucible, are considered to remove the oxide.1 The speed of pulling up is better to be smaller than 7.5 cm/h. High-grade graphite crucible is often used, but p-type impurities might be produced by the reaction of Al and C. Zone refining using the Al2O3 boat or floating zone refining is possible, but a remarkable removal of impurities like Si and Ge is not expected.

Definition

Aluminium antimonide (AlSb) decomposes slowly to Al and Sb at room temperature.

Structure and conformation

The space lattice of AlSb belongs to the cubic system, and its zinc blend-type structure has a lattice constant of a=0.6136 nm and Al–Sb=0.266 nm.