Chromium(III) telluride

  • Chromic telluride
  • Chromium sesquitelluride
Formula
Cr2Te3
Description
Odorless, gray powder.

Registry Numbers and Inventories.
CAS
12053-39-3
EC (EINECS/ELINCS)
235-003-8
R: 20/22 43 45
S: 24 27 28 37/39 45 53
Canada DSL/NDSL
NDSL
US TSCA
Listed
Korea ECL
Listed

Properties.
Formula
Cr2Te3
Formula mass
486.79
Density
6.66 g/cm3 (20 C)

Hazards and Protection.
Storage
Keep container tightly sealed. Store in cool, dry conditions in well sealed containers.
Protection
Protective work clothing. Chemical protective gloves. Safety glasses or goggles.
Stability
Decomposition will not occur if used and stored according to specifications.

Fire.
Fire fighting
Use fire fighting measures that suit the surrounding fire. Wear self-contained respirator. Wear fully protective impervious suit.
Fire potential
Product is not flammable
Health
2
 
Flammability
0
 
 
Reactivity
0
 

Health.
Exposure limit(s)
NIOSH PEL: 0.5 mg/m3 (as Cr); 0.1 mg/m3 (as Te)
Exposure effects
Chromium powder, chromium (II) and chromium (III) compounds may cause nausea, diarrhea, vomiting, skin and eye irritation and pneumoconiosis. Although less likely than Cr(VI) compounds, the NTP considers all chromium to be potentially carcinogenic. Tellurium is converted in the body to dimethyl telluride which imparts a garlic-like odor to the breath and sweat. Heavy exposure may result in headache, drowsiness, metallic taste, loss of appetite, nausea, tremors, convulsions, and respiratory arrest

First aid
 
   Ingestion
Seek immediate medical treatment.
   Inhalation
Supply fresh air. If required, provide artificial respiration. Keep patient warm. Seek immediate medical advice.
   Skin
Immediately wash with water and soap and rinse thoroughly. Seek immediate medical advice.
   Eyes
Rinse opened eye for several minutes under running water. Then consult a doctor.

Transport.