Cobalt(II) fluoride tetrahydrate

  • Cobaltous fluoride tetrahydrate
  • Cobalt difluoride tetrahydrate
Formula
CoF2 : 4H2O
Structure
Description
red orthorhombic crystals

Registry Numbers and Inventories.
CAS
13817-37-3
23/24/25 32 34
26 27 28 36/37/39 45
UN (DOT)
2923

Properties.
Formula
CoF2H8O4
Formula mass
168.99
Density
2.19 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
Wear appropriate government approved 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 heat and moisture sensitive.
Incompatibilities
Acids, glass, oxidizing agents.
Decomposition
Hydrogen fluoride, Cobalt/cobalt oxides.

Fire.
Fire fighting
Do NOT use water. Extinguish with carbon dioxide, dry chemical powder or appropriate foam. Wear self-contained breathing apparatus and protective clothing to prevent contact with skin and eyes.
Hazards
Emits toxic fumes under fire conditions. Corrosive. Toxic.

Health.
Exposure effects
Harmful if swallowed, inhaled, or absorbed through skin. Target organs: liver, kidneys. Symptoms of fluoride overexposure may include salivation, nausea, vomiting, abdominal pain, fever, and labored breathing. Fluoride ion can reduce serum calcium levels possibly causing fatal hypocalcemia. Prolonged exposure to fluoride dusts, vapors, or mists results in perforation of the nasal septum. Chronic effects include excessive calcification of the bones, ligaments, and tendons. Symptoms of exposure may include burning sensation, coughing, wheezing, laryngitis, shortness of breath headache, nausea, and vomiting. Inhalation may result in spasm inflammation and edema of the larynxand bronchi, chemical pneumonitis, and pulmonary edema. Material is extremely destructive to tissue of the mucous membranes and upper respiratory tract, eyes, and skin.

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.
UN number
2923
Response guide
Hazard class
8
Packing Group
III