| Identification | More | [Name]
BISMUTH TELLURIDE | [CAS]
1304-82-1 | [Synonyms]
BISMUTH (III) TELLURIDE
BISMUTH TELLURIDE
bismuthsesquitelluride
bismuthtelluride(bi2te3)
bismuthtelluride,undoped
bismuthtritelluride
tellurobismuthite
tellururedebismuth
dibismuth tritelluride
BismuthTelluride,99.999%
bismuth(iii) telluride, vacuum deposition grade
BISMUTH TELLURIDE: 99.999%, PIECES
Bismuth(III) telluride, 99.98% (metals basis)
Bismuth(III) telluride, Vacuum Deposition Grade, 99.999% (metals basis)
Bismuth Telluride (Total Dust)
Bismuth telluride, respirable
Dibismuth tritelluride-Se-doped
Bismuth (III) telluride, 99% (metals basis)
2,4,5-Tritellura-1,3-dibismabicyclo[1.1.1]pentane | [EINECS(EC#)]
215-135-2 | [Molecular Formula]
Bi2Te3 | [MDL Number]
MFCD00014201 | [Molecular Weight]
800.76 | [MOL File]
1304-82-1.mol |
| Chemical Properties | Back Directory | [Appearance]
Bismuth telluride is a gray or black crystalline
solid or gray powder. | [Melting point ]
585 °C(lit.)
| [Boiling point ]
1172 °C | [density ]
7.642 g/mL at 25 °C(lit.)
| [solubility ]
insoluble in H2O; soluble in ethanol | [form ]
Powder | [color ]
Gray | [Water Solubility ]
Insoluble in water. | [Crystal Structure]
Cubic, Halite Structure - Space Group Fm3m | [Sensitive ]
Moisture Sensitive | [Exposure limits]
ACGIH: TWA 10 mg/m3; TWA 5 mg/m3; TWA 0.1 mg/m3
OSHA: TWA 15 mg/m3; TWA 5 mg/m3
NIOSH: IDLH 25 mg/m3; TWA 5 mg/m3; TWA 10 mg/m3; TWA 0.1 mg/m3 | [InChIKey]
GUYIRKJSQUOSJV-UHFFFAOYSA-N | [CAS DataBase Reference]
1304-82-1(CAS DataBase Reference) | [EPA Substance Registry System]
Dibismuth tritelluride (1304-82-1) |
| Safety Data | Back Directory | [Hazard Codes ]
Xn | [Risk Statements ]
R20/21/22:Harmful by inhalation, in contact with skin and if swallowed .
R36/37/38:Irritating to eyes, respiratory system and skin . | [Safety Statements ]
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36:Wear suitable protective clothing . | [RIDADR ]
UN 3284 6.1/PG 3
| [WGK Germany ]
3
| [RTECS ]
EB3110000
| [TSCA ]
Yes | [HazardClass ]
6.1 | [Hazardous Substances Data]
1304-82-1(Hazardous Substances Data) |
| Hazard Information | Back Directory | [General Description]
Gray or black hexagonal platelets with a metallic luster or gray powder. Mp: 586°C. Density: 7.8 g cm-3. An alloy of two metallic elements. | [Reactivity Profile]
BISMUTH TELLURIDE may emit toxic fumes of tellurium when heated to decomposition. Incompatible with strong oxidizing agents such as nitric acid or bromine, chlorine or fluorine. Moderate fire hazard by reaction with such materials. May react with strong acids to evolve toxic gases; may react slowly with water to evolve toxic gases. Slight explosion hazard with moisture. | [Hazard]
Toxic. | [Potential Exposure]
Bismuth telluride is used in thermoelectric
cooling, power generation, semiconductor manufacture;
pharmaceuticals; medical therapy; cosmetics.
Exposure involves those working in “Silicon Valley” and
similar locations around the world. An alloy of two metallic
elements that are sometimes doped with SeS. The SeS
dopant alters the electrical properties, but has too low a
concentration to affect the chemical properties. | [First aid]
If this chemical gets into the eyes, remove any
contact lenses at once and irrigate immediately for at least
15 minutes, occasionally lifting upper and lower lids. Seek
medical attention immediately. If this chemical contacts the
skin, remove contaminated clothing and wash immediately
with soap and water. Seek medical attention immediately.
If this chemical has been inhaled, remove from exposure,
begin rescue breathing (using universal precautions, including
resuscitation mask) if breathing has stopped and CPR if
heart action has stopped. Transfer promptly to a medical
facility. When this chemical has been swallowed, get medical
attention. Give large quantities of water and induce
vomiting. Do not make an unconscious person vomit.
| [Shipping]
UN3284 Tellurium compound, n.o.s., Hazard
Class: 6.1; Labels: 6.1—Poisonous materials, Technical
Name Required. | [Incompatibilities]
Reacts with acids forming toxic gases.
Incompatible with oxidizers (chlorates, nitrates, peroxides,
permanganates, perchlorates, chlorine, bromine, fluorine,
etc.); contact may cause fires or explosions. Keep away
from alkaline materials, strong bases, strong acids, oxoacids,
epoxides. Toxic and flammable gas may slowly
evolve from contact with moisture. | [Description]
Bismuth telluride is a gray crystalline solid.Molecular weight=800.83; Specific gravity (H2O:1)=7.7;Freezing/Melting point=573℃; Vapor pressure=0 mmHgat 20℃. Hazard Identification (based on NFPA-704 MRating System): Health 2, Flammability 2, Reactivity 2.Note: Commercial mix of doped bismuth tritelluride maycontain 80% Bi2Te3, 20% stannous telluride, plus some tellurium. Insoluble in water. Doped and undoped have similarphysical properties. | [Chemical Properties]
Bismuth telluride is a gray or black crystalline
solid or gray powder. | [Uses]
Bi2Te3, along with Sb2Te3 and other structurally analogous semiconductors, is widely regarded as one of the best materials for room-temperature thermoelectric devices. Bismuth(III) telluride is a key component of thermoelectric materials that have reached ZT values as high as 2.4 at room temperature. | [Uses]
In electronics as semiconductor. | [Uses]
Semiconductors; thermoelectric
cooling; power generation application; for
commercial use, Bi2Te3 is “doped” with selenium
sulfide to alter its conductivity. | [Health Hazard]
Bismuth telluride, either alone
or doped with selenium sulfide, is apparently of
very low toxicity.
In limited industrial experimental work
with bismuth telluride under controlled conditions
(vacuum hoods), no adverse health
effects were encountered other than tellurium
breath. | [storage]
Color Code—Blue: Health Hazard/Poison: Storein a secure poison location. Bismuth telluride must bestored to avoid contact with strong oxidizers (such as chlorine, bromine, and fluoride), since violent reactions occur.Store in tightly closed containers in a cool, well-ventilatedarea away from moisture. |
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