Cerium(III) sulfide

  • Cerous sulfide
  • Dicerium trisulfide
  • C.I. Pigment Orange 75
  • Pigment Red 265
  • Pigment Red 275
Formula
Ce2S3
Description
Red-brown powder with the odor of rotten eggs.

Registry Numbers and Inventories.
CAS
12014-93-6
EC (EINECS/ELINCS)
234-603-7
R: 31 36/37/38
UN (DOT)
3134
Canada DSL/NDSL
NDSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
Ce2S3
Formula mass
376.43
Melting point, °C
2450
Boiling point, °C
 
Density
5.02 g/cm3 (20 C)

Hazards and Protection.
Storage
Protect from humidity and water. Store under dry inert gas. 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.
Incompatibilities
Acids, water/moisture.
Decomposition
Hydrogen sulfide.

Fire.
Fire fighting
Extinguish with CO2, sand, extinguishing powder. Do not use water. Wear self-contained respirator. Wear fully protective impervious suit.
Combustion products
Sulfur dioxide, hydrogen sulfide.
Health
2
 
Flammability
1
 
 
Reactivity
2
 

Health.
Exposure effects
Lanthanons can cause delayed blood clotting leading to hemorrhages. Exposure may also lead to sensitivity to heat, itching, increased awareness of odor and taste, and liver damage. Sulfides show variable toxicity. The alkaline sulfides are similar in action to alkalies. They cause irritation of the skin and are corrosive by ingestion. The heavy metal sulfides are generally insoluble and show little toxic action except through the liberation of hydrogen sulfide. Hydrogen sulfide, if generated, is toxic, a severe irritant and flammable. Effects include conjunctivitis, headache, nausea, dizziness, coughing, pulmonary edema and possibly death.

First aid
 
   Ingestion
Seek 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.
UN number
3134
Response guide
Hazard class
4.3
Packing Group
III