Product Identification

Product Name

Potassium iodide

Synonyms

Dipotassium diiodide
Kisol
Knollide

CAS

7681-11-0

Formula

IK

Molecular Weight

166.01

EINECS

231-659-4

RTECS

TT2975000

RTECS Class

Mutagen; Reproductive Effector; Human Data

Merck

12,7809

Beilstein/Gmelin

13713 (G)

Physical and Chemical Properties

Appearance

Colorless or white, cubical crystals, white granules, or powder, slightly hygroscopic, slightly deliquescent.

Solubility in water

1440 g/L

Melting Point

686

Boiling Point

1330

Vapor Pressure

9 (879 C)

Density

3.123 g/cm3 (25 C)

Heat Of Vaporization

Usage

Manufacture photographic emulsions, in animal & poultry feeds to the extent of 10-30 ppm, in table salts & in some drinking water.

Odor threshold

Odorless

First Aid Measures

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.

Handling and Storage

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.

Hazards Identification

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.

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.

EC Risk Phrase

R 42/43

EC Safety Phrase

S 22 36/37 45

UN (DOT)

3335

Exposure Controls/Personal Protection

Personal 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.

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.

Poison Class

4

Fire Fighting Measures

Fire Fighting

Fire-fighters should wear full protective clothing self-contained breathing apparatus. Use equipment/media appropriate to surrounding fire conditions.

Accidental Release Measures

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 and Reactivity

Stability

Stable under normal temperatures and pressures.

Incompatibilities

Strong acids, strong reducing agents, strong bases, strong oxidizing agents.

Decomposition

Oxides of potassium, iodine.

Transport Information

UN Number

3335

HS Code

2827 60 00