LEAD TELLURIDE Property

Melting point:

905 °C

Density 

8,164 g/cm³

solubility 

insoluble in H2O, acid solutions

form 

Powder

Specific Gravity

8.164

color 

Gray

Water Solubility 

Insoluble in water.

Crystal Structure

Cubic, Halite Structure - Space Group Fm3m

Merck 

14,5422

Exposure limits

ACGIH: TWA 0.05 mg/m3; TWA 0.1 mg/m3
NIOSH: IDLH 25 mg/m3; IDLH 100 mg/m3; TWA 0.1 mg/m3; TWA 0.050 mg/m3

CAS DataBase Reference

1314-91-6(CAS DataBase Reference)

EPA Substance Registry System

Lead(II) telluride (1314-91-6)

Safety

Hazard Codes 

N-T,N,T

Risk Statements 

62-61-50/53-33-20/22

Safety Statements 

61-60-53-45

RIDADR 

3284

WGK Germany 

3

TSCA 

Yes

HazardClass 

6.1

PackingGroup 

III

HS Code 

28429010

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H351Suspected of causing cancer

H373May cause damage to organs through prolonged or repeated exposure

H410Very toxic to aquatic life with long lasting effects

Precautionary statements

P202Do not handle until all safety precautions have been read and understood.

P260Do not breathe dust/fume/gas/mist/vapours/spray.

P273Avoid release to the environment.

P301+P312IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.

P308+P313IF exposed or concerned: Get medical advice/attention.

LEAD TELLURIDE Chemical Properties,Usage,Production

Chemical Properties

irregular chunks with metal lustre

Chemical Properties

Lead telluride, PbTe, forms white cubic crystals, sp gr 8.16, and has a hardness of 3 on the Mohs’ scale. It is very slightly soluble in water, melts at 917 °C, and is prepared by melting lead and tellurium together. Lead telluride has semiconductive and photoconductive properties.

Uses

Lead telluride is used in pyrometry, in heat-sensing instruments such as bolometers and infrared spectroscopes, and in thermoelectric elements to convert heat directly to electricity. Lead telluride is also used in catalysts for oxygen reduction in fuel cells, as cathodes in primary batteries with lithium anodes, in electrical contacts for vacuum switches, in lead-ion selective electrodes, in tunable lasers, and in thermistors.

Uses

In semiconductor research, photoconductor cellsLead(II) telluride is used as an infrared detector material. It is also used in spacecraft power applications. Further, it is used in infrared detection, imaging and in solar cells. In addition, it acts as a semiconductor and photoconductor in the form of single crystals.

Uses

In photoconductor cells; in semiconductor research.

General Description

This product has been enhanced for energy efficiency.

Structure and conformation

The space lattice of PbTe belongs to the cubic system, and its rock salt structure has a lattice constant of a=0.317 nm.