Yttrium sulfate octahydrate

  • Sulfuric acid, yttrium(3+) salt (3:2), octahydrate
  • Diyttrium trisulfate octahydrate
Formula
Y2(SO4)3 : 8H2O
Structure
Description
red monoclinic crystals

Registry Numbers and Inventories.
CAS
7446-33-5
36/37/38
26 37/39

Properties.
Formula
H16O20S3Y2
Formula mass
610.13
Density
2.5 g/cm3 (25 C)

Hazards and Protection.
Storage
Keep tightly closed. Store in a cool dry place.
Protection
Compatible chemical-resistant gloves. Chemical safety goggles. Protective clothing.
Respirators
Use respirators and components tested and approved under appropriate government standards such as NIOSH (US) or CEN (EU). Where risk assessment shows air-purifying respirators are appropriate use a dust mask type N95 (US) or type P1 (EN 143) respirator.
Small spills/leaks
Sweep up, place in a bag and hold for waste disposal. Avoid raising dust. Ventilate area and wash spill site after material pickup is complete.
Stability
Material is hygroscopic.
Incompatibilities
Moisture, strong oxidizing agents.
Decomposition
Sulfur oxides.

Fire.
Fire fighting
Use extinguishing media appropriate to surrounding fire conditions. Wear self-contained breathing apparatus and protective clothing to prevent contact with skin and eyes.
Fire potential
Noncombustible.
Hazards
Emits toxic fumes under fire conditions.

Health.
Exposure effects
Causes eye and skin irritation. May be harmful by inhalation, ingestion, or skin absorption.
   Inhalation
Material is irritating to mucous membranes and upper respiratory tract.

First aid
 
   Ingestion
If swallowed, wash out mouth with water provided person is conscious. Call a physician.
   Inhalation
If inhaled, remove to fresh air. If not breathing give artificial respiration. If breathing is difficult, give oxygen.
   Skin
In case of contact, immediately wash skin with soap and copious amounts of water. Remove contaminated clothing and shoes. Call a physician.
   Eyes
In case of contact with eyes, flush with copious amounts of water for at least 15 minutes. Assure adequate flushing by separating the eyelids with fingers. Call a physician.

Transport.