10026-17-2 Usage
Description
Cobalt(II) fluoride, also known as cobalt fluoride, is a chemical compound with the formula CoF2. It is a red tetragonal crystal with a density of 4.46 g/cm3, melting at 1,127°C and vaporizing around 1,400°C. Cobalt(II) fluoride is sparingly soluble in water but soluble in warm mineral acids. It decomposes in boiling water and can form ammine complexes from its hydrate. In its general form, it is a violet to red solid that sinks and mixes slowly with water.
Uses
Used in Alloy Industry:
Cobalt(II) fluoride is used as a catalyst for alloying metals, enhancing the process and improving the quality of the resulting alloys.
Used in Optical Industry:
Cobalt(II) fluoride is utilized in optical deposition, where it significantly improves the optical quality of materials, making it a valuable component in the production of high-quality optical devices.
Used in Dental Care:
The compound is also employed in dental care, likely due to its properties that can contribute to the enhancement of dental materials or treatments.
Used as a Catalyst for Organic Reactions:
Cobalt(II) fluoride serves as a catalyst in various organic reactions, facilitating the conversion of reactants to products and increasing the efficiency of the chemical processes.
Physical and Chemical Properties:
Cobalt(II) fluoride exhibits unique physical properties, such as its red tetragonal crystal structure and its ability to melt at high temperatures. It is also characterized by its chemical properties, including its solubility in cold water and hydrofluoric acid, and its decomposition in hot water. The compound can form ammine complexes from its hydrate, which further expands its potential applications in various industries.
Preparation
Cobalt(II) fluoride is prepared by heating anhydrous cobalt(II) chloride or oxide in a stream of hydrogen fluoride:
CoCl2 + 2HF → CoF2 + 2HCl
CoO + 2HF → CoF2 + 2H2O
Also, cobalt(II) fluoride can be prepared as a tetrahydrate, CoF2?4H2O by dissolving cobalt(II) hydroxide in hydrofluoric acid. The tetrahydrate is then dehydrated to anhydrous fluoride. Elemental fluorine combines with cobalt at 450°C forming mixtures of cobalt(II)–and cobalt(III) fluorides.
Reactivity Profile
Cobalt(II) fluoride is a toxic, light brown crystalline material, when exposed to water Cobalt(II) fluoride forms highly corrosive hydrofluoric acid. When heated to decomposition Cobalt(II) fluoride emits toxic fumes of metallic cobalt and fluorides [Lewis, 3rd ed., 1993, p. 344].
Hazard
Highly toxic.
Health Hazard
INHALATION: Inhalation of dust may cause pulmonary symptoms. EYES: Irritation. SKIN: Skin rashes, dermatitis. INGESTION: Nausea and vomiting caused by local irritation.
LD50 oral (rat): 150 mg/kg
Safety Profile
Poison by ingestion.
When heated to decomposition it emits
toxic fumes of Co and F-.
Check Digit Verification of cas no
The CAS Registry Mumber 10026-17-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,0,0,2 and 6 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 10026-17:
(7*1)+(6*0)+(5*0)+(4*2)+(3*6)+(2*1)+(1*7)=42
42 % 10 = 2
So 10026-17-2 is a valid CAS Registry Number.
InChI:InChI=1/Co.2FH/h;2*1H/q+2;;/p-2
