Potassium iodide

  • Dipotassium diiodide
Formula
KI
Structure
Description
Colorless or white, cubical crystals, white granules, or powder, slightly hygroscopic, slightly deliquescent.
Uses
Manufacture photographic emulsions, in animal & poultry feeds to the extent of 10-30 ppm, in table salts & in some drinking water.

Registry Numbers and Inventories.
CAS
7681-11-0
EC (EINECS/ELINCS)
231-659-4
R 42/43
S 22 36/37 45
RTECS
TT2975000
RTECS class
Mutagen; Reproductive Effector; Human Data
UN (DOT)
3335
Merck
12,7809
Beilstein/Gmelin
13713 (G)
EPA OPP
75701
Swiss Giftliste 1
G-1750
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
IK
Formula mass
166.01
Melting point, °C
686
Boiling point, °C
1330
Vapor pressure, mmHg
9 (879 C)
Odor Threshold Odor threshold Odorless
Density
3.123 g/cm3 (25 C)
Solubility in water
1440 g/L
Viscosity
1.0227 cp (732.85 C)
Thermal expansion
0.0005027/K
Heat of fusion
20.93 kJ/mol

Hazards and Protection.
Storage
Store in a cool, dry, well-ventilated area away from incompatible substances. Store protected from moisture. Store protected from light.
Handling
Wash thoroughly after handling. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation. Store protected from light. Do not allow contact with water. Keep from contact with moist air and steam.
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. Clean up spills immediately, using the appropriate protective equipment. Avoid generating dusty conditions. Provide ventilation. Do not get water inside containers.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong acids, strong reducing agents, strong bases, strong oxidizing agents.
Decomposition
Oxides of potassium, iodine.

Fire.
Fire fighting
Fire-fighters should wear full protective clothing self-contained breathing apparatus. Use equipment/media appropriate to surrounding fire conditions.
Health
1
 
Flammability
1
 
 
Reactivity
0
 

Health.
Poison_Class
4
Exposure effects
Chronic exposure can lead to iodism characterized by salivation, nasal discharge, sneezing, conjunctivitis, fever, laryngitis, bronchitis, stomatitis, and skin rashes. Chronic ingestion of iodides during pregnancy has resulted in fetal death, severe goiter, and cretinoid appearance of the newborn.
   Ingestion
Causes gastrointestinal irritation with nausea, vomiting and diarrhea. Chronic ingestion of iodides during pregnancy has resulted in fetal death, severe goiter, and cretinoid appearance of the newborn.
   Inhalation
May cause respiratory tract irritation.
   Skin
May cause skin irritation. Chronic ingestion of iodides during pregnancy has resulted in fetal death, severe goiter, and cretinoid appearance of the newborn.
   Eyes
Causes eye irritation.

First aid
 
   Ingestion
Do NOT induce vomiting. 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.
   Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid if cough or other symptoms appear.
   Skin
Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists. Wash clothing before reuse.
   Eyes
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Transport.
UN number
3335
Response guide
USCG CHRIS Code
PTI
 
HS Code
2827 60 00