ZIRCONIUM IODIDE

CAS NO.：13986-26-0
Empirical Formula: I4Zr
Molecular Weight: 598.84
MDL number: MFCD00049641
EINECS: 237-780-9
SAFETY DATA SHEET (SDS)
Update Date: 2026-05-28 01:15:00

What is ZIRCONIUM IODIDE?

Description

Zirconium(IV) iodide, ZrI4, is the most readily available iodide of zirconium. It is an orange-colored solid that degrades in the presence of water. The compound was once renowned as an intermediate in the purification of zirconium metal. This compound is volatile, subliming as intact tetrahedral ZrI4 molecules.

Chemical properties

orange crystal(s); fumes heavily in air; cub, a=1.179nm [KIR84] [MER06]

The Uses of ZIRCONIUM IODIDE

Used in the van Arkel-de Boer refining process.

Preparation

It is prepared by the direct reaction of powdered zirconium metal and iodine. Pyrolysis of zirconium(IV) iodide gas by contact of hot wire was the first industrial process for the commercial production of pure ductile metallic zirconium.

Structure and conformation

Like most binary metal halides, it has a polymeric structure. The compound exists as a polymer consisting of octahedral Zr(IV) centers, each with a pair of terminal iodide ligands and four doubly bridging iodide ligands. The Zr-I distances are 2.692 (terminal) and 3.030 A? .

Properties of ZIRCONIUM IODIDE

Melting point:	499°C
Boiling point:	431°C (estimate)
Density	4.85
storage temp.	under inert gas (nitrogen or Argon) at 2–8 °C
solubility	very soluble in H2O
form	powder
color	Yellow
Specific Gravity	4.914
Water Solubility	Insoluble in water.
Sensitive	Air & Moisture Sensitive
Hydrolytic Sensitivity	7: reacts slowly with moisture/water
Merck	14,10178
Exposure limits	ACGIH: TWA 5 mg/m3; STEL 10 mg/m3 NIOSH: IDLH 25 mg/m3; TWA 5 mg/m3; STEL 10 mg/m3
CAS DataBase Reference	13986-26-0(CAS DataBase Reference)
EPA Substance Registry System	Zirconium iodide (ZrI4) (13986-26-0)

Safety information for ZIRCONIUM IODIDE

Signal word	Danger
Pictogram(s)	Corrosion Corrosives GHS05
GHS Hazard Statements	H314:Skin corrosion/irritation
Precautionary Statement Codes	P260:Do not breathe dust/fume/gas/mist/vapours/spray. P280:Wear protective gloves/protective clothing/eye protection/face protection. P363:Wash contaminated clothing before reuse. P303+P361+P353:IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.