HAFNIUM IODIDE Chemical Properties

Melting point:

400°C

Boiling point:

°C

Density 

5.6 g/mL at 25 °C(lit.)

solubility 

reacts with H2O

form 

Powder

color 

yellow-orange cubic crystals, crystalline

Sensitive 

Moisture Sensitive

Hydrolytic Sensitivity

7: reacts slowly with moisture/water

Exposure limits

ACGIH: TWA 0.5 mg/m3
NIOSH: IDLH 50 mg/m3; TWA 0.5 mg/m3

InChI

InChI=1S/Hf.4HI/h;4*1H/q+4;;;;/p-4

InChIKey

YCJQNNVSZNFWAH-UHFFFAOYSA-J

SMILES

[Hf](I)(I)(I)I

CAS DataBase Reference

13777-23-6(CAS DataBase Reference)

EPA Substance Registry System

Hafnium iodide (HfI4) (13777-23-6)

Safety Information

Hazard Codes 

T

Risk Statements 

61

Safety Statements 

36/37/39-45-53

RIDADR 

UN3260

WGK Germany 

3

TSCA 

No

HazardClass 

8

PackingGroup 

II

HS Code 

2827600090

MSDS

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HAFNIUM IODIDE Usage And Synthesis

Application

Hafnium iodide can be used to prepare hafnium using the iodination refining process. The principle of the iodination refining process is that in a vacuum-sealed container, iodine reacts with the metal to be purified at a lower temperature to generate volatile iodides. These iodides diffuse onto a hot masterbatch at a higher temperature, dissociating into metal and iodine. The metal deposits on the incandescent masterbatch, causing it to grow, while the iodine returns to the raw material area to continue reacting with the raw metal. Iodine acts as a "transporter," and the process is repeated.

Chemical Properties

yellowish orange cub, a=1.176nm, or red powder(s); sensitive to moisture [STR93] [KIR80]

HAFNIUM IODIDE(13777-23-6)Related Product Information

• ZIRCONIUM IODIDE
• HAFNIUM BORIDE
• Hafnium(Ⅳ) chloride
• Hafnium oxide
• Lithium iodide
• HAFNIUM CARBIDE
• Hafnium(Ⅳ) oxide
• Hafnium(IV) chloride
• HAFNIUM HYDRIDE
• HAFNIUM IODIDE
• HAFNIUM