BISMUTH(III) IODIDE Property

Melting point:

408 °C(lit.)

Boiling point:

500°C

Density 

5.78 g/mL at 25 °C(lit.)

Flash point:

500°C

solubility 

soluble in ethanol

form 

beads

color 

Dark gray to black

Specific Gravity

5.778

Water Solubility 

Insoluble in water. Highly soluble in ethanol, benzene, toluene and xylene, hydrochloric acid and in hydriodic acid.

Sensitive 

Hygroscopic

Merck 

14,1269

Solubility Product Constant (Ksp)

pKsp: 18.11

CAS DataBase Reference

7787-64-6(CAS DataBase Reference)

EPA Substance Registry System

Bismuthine, triiodo- (7787-64-6)

Safety

Hazard Codes 

C

Risk Statements 

34

Safety Statements 

26-27-36/37/39-45

RIDADR 

UN 3260 8/PG 3

WGK Germany 

3

TSCA 

Yes

HS Code 

2827.60.5100

HazardClass 

8

PackingGroup 

III

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H314Causes severe skin burns and eye damage

Precautionary statements

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

P280Wear protective gloves/protective clothing/eye protection/face protection.

P303+P361+P353IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.

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

P363Wash contaminated clothing before reuse.

BISMUTH(III) IODIDE Chemical Properties,Usage,Production

Chemical Properties

White to yellowish white crystalline powder

Uses

Polycrystalline films of bismuth triiodide are used as beta direct and digital detectors for medical imaging applications. Bismuth(III) iodide is used as an ice nucleant. It is also used in electron microscopy to reveal synapses. Addition of bismuth triiodide has been shown to improve the glass forming ability and thermal stability of Ge-Te-BiI(3) chalcogenide glasses. Solution-processable BiI3 nanosheets have been shown to exhibit the potential to be used as HTLs (Hole Transport Layer) in conventional OPV (organic photovoltaic) devices.

Synthesis

Iodine (20 g.) is ground with 45 g. of finely powdered Bi in a mortar and then rapidly placed in a retort. The mixture is heated until reaction begins. At the end of the reaction, a stream of CO3 is passed through the warm retort to remove unreacted iodine. The iodide is then sublimed in a stream of CO3. Smaller quantities can also be prepared by placing the mixture in a boat inserted into a Vycor tube, heating, and then subliming the Bil 3 in a CO3 stream.