Copper(I) iodide

  • Copper iodide
  • Copper monoiodide
  • Cuprous iodide
  • Hydro-Giene
  • Natural marshite
Formula
CuI
Structure
Description
Odorless tan or off-white solid.
Uses
Used as a catalyst in organic reactions.

Registry Numbers and Inventories.
CAS
7681-65-4
EC (EINECS/ELINCS)
231-674-6
R 36/37/38
UN (DOT)
2074
Merck
13,2692
Beilstein/Gmelin
13694 (G)
EPA OPP
108301
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
CuI
Formula mass
190.44
Melting point, °C
602
Boiling point, °C
1290
Vapor pressure, mmHg
100 (656 C)
Density
5.62 g/cm3
Solubility in water
Insoluble
Refractive index
2.033
Thermal expansion
0.000112/K (20 C)

Hazards and Protection.
Storage
Do not store in direct sunlight. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
Handling
Wash thoroughly after handling. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation.
Protection
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Small spills/leaks
Vacuum or sweep up material and place into a suitable disposal container. Reduce airborne dust and prevent scattering by moistening with water. Clean up spills immediately, using the appropriate protective equipment. Avoid generating dusty conditions. Provide ventilation.
Disposal code
15
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Oxidizing agents, alkali metals, potassium, acetylene.
Decomposition
Hydrogen iodide, iodine.

Fire.
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Substance is noncombustible. May form very sensitive, explosive metallic compounds. Extinguishing media: Substance is noncombustible; use agent most appropriate to extinguish surrounding fire.
Fire potential
Combustible material: may burn but does not ignite readily.
Hazards
Irritating hydrogen iodide or iodine vapors may form in fire.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.
Health
1
 
Flammability
0
 
 
Reactivity
1
 

Health.
Exposure effects
Increased temperature may be noted in some cases. Abnormally low blood pressure may occur. Mental status may be depressed. Cretinism and goiter have been reported in children whose mothers were taking iodides.
   Ingestion
May cause irritation of the digestive tract. The toxicological properties of this substance have not been fully investigated. May be harmful if swallowed.
   Inhalation
Dust is irritating to the respiratory tract.
   Skin
Causes skin irritation.
   Eyes
Causes eye irritation.

First aid
 
   Ingestion
If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.
   Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
   Skin
Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
   Eyes
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.

Transport.
UN number
2074
Response guide
Hazard class
6.1
Packing Group
III
 
USCG CHRIS Code
CID
 
HS Code
2827 60 00