Arsenic iodide

  • Arsenic triiodide
  • Arsenious iodide
  • Arsenic(III) iodide
Formula
AsI3
Structure
Description
Orange-red rhombohedral crystals (from acetone). Red as a liquid.
Uses
Medication (vet):.

Registry Numbers and Inventories.
CAS
7784-45-4
EC (EINECS/ELINCS)
232-068-4
RTECS
CG1950000
RTECS class
Other
UN (DOT)
1557
Merck
12,843
Beilstein/Gmelin
2308 (G)
RCRA
D004
Swiss Giftliste 1
G-1147
Canada DSL/NDSL
NDSL
US TSCA
Listed
Korea ECL
Listed

Properties.
Formula
AsI3
Formula mass
455.63
Melting point, °C
146
Boiling point, °C
400
Vapor pressure, mmHg
0.015 (35 C)
Density
4.39 g/cm3
Solubility in water
moderately soluble
Refractive index
2.23
Thermal expansion
0.00017/K>

Hazards and Protection.
Storage
Store in a cool, dry place. Store in a tightly closed container.
Handling
Wash thoroughly after handling. Use only in a well ventilated area. Avoid contact with eyes, skin, and clothing. 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 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
Sweep up or absorb material, then place into a suitable clean, dry, closed container for disposal.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Acids, bases, aluminum, iron, zinc, iron salts.
Decomposition
Irritating and toxic fumes and gases, iodide ions (I-), arsenic fumes.

Fire.
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. To extinguish fire, use water fog, dry chemical, carbon dioxide, or regular foam.
Fire potential
May burn but does not ignite readily.
Hazards
Containers may explode when heated. Runoff may pollute waterways. Substance may be transported in a molten form.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.

Health.
Exposure limit(s)
TLV (as As): ppm; 0.01 mg/m3 A1 (ACGIH 1997). MAK: class III A1 (1997).
Carcinogin
O, G-A1, I-1, N-1, CP65
Poison_Class
1
Exposure effects
Prolonged exposure to iodides may produce iodism in sensitive individuals. Exposure will include: skin rash, running nose and headache.
   Ingestion
May cause gastrointestinal irritation with nausea, vomiting and diarrhea. Effects may be delayed. May cause garlic smell on the breath and body.
   Inhalation
May cause respiratory tract irritation.
   Skin
May cause severe skin irritation with possible burns, especially if skin is wet or moist.
   Eyes
May cause eye irritation and possible burns.

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
Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
   Skin
Get medical aid immediately. 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
1557
Response guide
Hazard class
6.1
Packing Group
I; II; III