TANTALUM (V) IODIDE

TANTALUM (V) IODIDE Property

Melting point:

496 °C(lit.)

Boiling point:

543 °C(lit.)

Density 

5.8 g/mL at 25 °C(lit.)

solubility 

reacts with H2O

form 

black hexagonal crystals

color 

black hexagonal, hexane crystals, crystalline; hygroscopic

Sensitive 

Moisture Sensitive

EPA Substance Registry System

Tantalum iodide (TaI5) (14693-81-3)

Safety

Hazard Codes 

T

Risk Statements 

23-34

Safety Statements 

26-36/37/39-45

RIDADR 

UN 3260 8/PG 2

WGK Germany 

3

HazardClass 

8

PackingGroup 

III

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H314Causes severe skin burns and eye damage

H331Toxic if inhaled

Precautionary statements

P260Do not breathe dust/fume/gas/mist/vapours/spray.

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P271Use only outdoors or in a well-ventilated area.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P301+P330+P331IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.

P303+P361+P353IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.

P304+P340IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P310Immediately call a POISON CENTER or doctor/physician.

P311Call a POISON CENTER or doctor/physician.

P321Specific treatment (see … on this label).

P363Wash contaminated clothing before reuse.

P403+P233Store in a well-ventilated place. Keep container tightly closed.

P405Store locked up.

P501Dispose of contents/container to..…

TANTALUM (V) IODIDE Chemical Properties,Usage,Production

Uses

Tantalum iodide, also known as tantalum pentaiodide, is an inorganic compound, a black powder with an orthorhombic crystal structure and a lattice constant a = 0.665 nm. It is one of the least stable tantalum compounds. Tantalum iodide absorbs moisture from air and hydrolyzes to tantalum pentoxide. At high temperatures, it readily decomposes into metallic tantalum and elemental iodine. Its easy sublimation and decomposition properties are utilized to produce high-purity tantalum.

Application

CN201410611060.7 discloses a cemented carbide stamping part, composed of the following materials in parts by weight: 30-40 parts copper hydroxide, 25-35 parts manganese trioxide, 22-26 parts silicon dioxide, 12-16 parts titanium oxide, 12-16 parts chromium trioxide, 10-15 parts nickel hydroxide, 10-15 parts tin dioxide, 10-14 parts iron tetroxide, 8-12 parts cobalt oxide, 8-10 parts molybdenum trioxide, 5-9 parts lithium hydride, 6-8 parts beryllium oxide, 6-8 parts tantalum pentaiodide, and 4-6 parts niobium pentoxide. The beneficial effects of this invention are: the cemented carbide stamping part provided by this invention, by adjusting the composition ratio of the stamping part, can effectively reduce the wrinkle rate and twist rate in die castings, and the quality can be improved by 3-4 times compared with the prior art.

Chemical Properties

hexagonal black powder(s); sensitive to moisture [LID94] [STR93]