Search
Titanium Dioxide Acetic Acid Citric Acid Sodium Hydroxide Oxalic Acid Ethyl Acetate
Sign in/Join free

Potassium iodide

CAS No.: 7681-11-0
Formula: KI
Molecular Weight: 166
Suppliers: All(0) China Suppliers(30) Products(150)
  • Description
  • Basic Info
  • Safety Info
  • MSDS
  • Price
  • Related Product
  • Supplier Reference
What is Potassium iodide

**Introduction to Potassium Iodide** Potassium iodide (KI) is a stable iodine compound widely used in medicine, industry, and radiation protection. As a white crystalline salt, it is highly soluble in water and serves as a key source of iodine, essential for thyroid function. Medically, KI is administered to prevent radioactive iodine uptake during nuclear emergencies, protecting the thyroid from radiation damage. It is also used to treat iodine deficiency and certain thyroid conditions. In industrial applications, KI acts as a catalyst, nutrient supplement, and in photographic chemicals. Safe when used as directed, potassium iodide plays a vital role in health and safety, particularly in areas at risk of nuclear exposure.

Preparation Process: Potassium iodide (KI) can be prepared by reacting potassium hydroxide (KOH) with hydriodic acid (HI). The neutralization reaction is: **KOH + HI → KI + H₂O** Alternatively, it can be synthesized by dissolving iodine (I₂) in a hot, concentrated solution of potassium hydroxide, forming potassium iodide and iodate (KIO₃) initially. The iodate is then reduced to iodide by heating with carbon or sulfur: **6 KOH + 3 I₂ → 5 KI + KIO₃ + 3 H₂O** **KIO₃ + 3 C → KI + 3 CO** The product is crystallized from the solution and purified by recrystallization.

Usage Scenarios: Potassium iodide (KI) is primarily used to protect the thyroid from radioactive iodine exposure during nuclear emergencies by saturating the gland and preventing uptake of harmful isotopes. It is also employed in medicine as an expectorant to loosen mucus in respiratory conditions like chronic bronchitis. In chemistry, KI serves as a reagent in iodometric titrations to determine oxidizing agents. It acts as a source of iodide ions in organic synthesis and photography for silver iodide preparation. Additionally, KI is used in table salt iodization to prevent iodine deficiency disorders. In radiation detection, it helps in cloud seeding and as a nutritional supplement in animal feed.

Potassium iodide Basic Info
Chemical Name Potassium iodide
Synonyms KI;I2;IODIDE;5470/11/1;IODINE SOLUTION;LUGOL;Pima;IODUM;Kaliumjodid;IODINE TINCTURE
CAS No. 7681-11-0
Molecular Formula KI
Molecular Weight 166
PSA 0.00000
LogP -2.99600
Safely Info
RTECS TT2975000
Hazard Class 8
Safety Statements 22-36/38
HS Code 28276000
WGK Germany 2
Packing Group II
RIDADR UN 2056 3/PG 2
Risk Statements 26
Hazard Codes Xn
Caution Statement P305+P351+P338
Hazard Declaration H315-H319
Symbol GHS07
Signal Word Warning
Potassium iodide Price
United States: $20-$50
China: $15-$35
Russia: $25-$60
Germany: $30-$70
India: $10-$30
Japan: $25-$50
Brazil: $20-$45
South Korea: $15-$40
Philippines: $15-$35
United Kingdom: $25-$60
France: $30-$70
Mexico: $20-$45
Canada: $25-$55
South Africa: $15-$40
Egypt: $20-$50
Turkey: $20-$45
Thailand: $15-$35
Indonesia: $10-$30
MSDS
MSDS
Name: Potassium Iodide Material Safety Data Sheet
Synonym: Knollide; Potid
CAS: 7681-11-0
Section 1 - Chemical Product   MSDS Name:Potassium Iodide Material Safety Data Sheet
Synonym:Knollide; Potid

Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS
CAS# Chemical Name content EINECS#
7681-11-0 Potassium Iodide 100 231-659-4
Hazard Symbols: None Listed.
Risk Phrases: None Listed.

Section 3 - HAZARDS IDENTIFICATION
  EMERGENCY OVERVIEW
Light sensitive.Moisture sensitive.
Potential Health Effects
Eye:
May cause eye 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.
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.
Chronic:
Chronic exposure can lead to iodism characterized by salivation, nasal discharge, sneezing, conjunctivitis, fever, laryngitis, bronchitis, stomatitis, and skin rashes. May cause reproductive and fetal effects. Chronic ingestion of iodides during pregnancy has resulted in fetal death, severe goiter, and cretinoid appearance of the newborn.

Section 4 - FIRST AID MEASURES
  Eyes: Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.
Skin:
Flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists. Wash clothing before reuse.
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 and move 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.
Notes to Physician:

Section 5 - FIRE FIGHTING MEASURES
  General Information:
During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Wear appropriate protective clothing to prevent contact with skin and eyes. Wear a self-contained breathing apparatus (SCBA) to prevent contact with thermal decomposition products.
Extinguishing Media:
Use agent most appropriate to extinguish fire. Do NOT get water inside containers. In case of fire, use carbon dioxide, dry chemical powder or appropriate foam.

Section 6 - ACCIDENTAL RELEASE MEASURES
  General Information: Use proper personal protective equipment as indicated in Section 8.
Spills/Leaks:
Vacuum or sweep up material and place into a suitable disposal container. Clean up spills immediately, observing precautions in the Protective Equipment section. Avoid generating dusty conditions.
Provide ventilation. Do not get water inside containers.

Section 7 - HANDLING and STORAGE
  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.
Storage:
Store in a cool, dry, well-ventilated area away from incompatible substances. Store protected from moisture. Store protected from light.

Section 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION
  Engineering Controls:
Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower. Use adequate ventilation to keep airborne concentrations low.
Exposure Limits CAS# 7681-11-0: Personal Protective Equipment 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 29 CFR 1910.134 or European Standard EN 149. Use a NIOSH/MSHA or European Standard EN 149 approved respirator if exposure limits are exceeded or if irritation or other symptoms are experienced.

Section 9 - PHYSICAL AND CHEMICAL PROPERTIES
 
Physical State: Crystals
Color: colorless or white
Odor: odorless
pH: 7 to 9
Vapor Pressure: Not available.
Viscosity: Not available.
Boiling Point: 1330 deg C
Freezing/Melting Point: 680 deg C
Autoignition Temperature: Not applicable.
Flash Point: Not applicable.
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature: Not available.
Solubility in water: Soluble in water
Specific Gravity/Density: 3.13
Molecular Formula: KI
Molecular Weight: 166.0028

Section 10 - STABILITY AND REACTIVITY
  Chemical Stability:
Stable under normal temperatures and pressures.
Conditions to Avoid:
Incompatible materials, light, dust generation, moisture, metals, excess heat.
Incompatibilities with Other Materials:
Strong acids, strong reducing agents, strong bases, strong oxidizing agents.
Hazardous Decomposition Products:
Oxides of potassium, iodine.
Hazardous Polymerization: Has not been reported.

Section 11 - TOXICOLOGICAL INFORMATION
  RTECS#:
CAS# 7681-11-0: TT2975000 LD50/LC50:
Not available.
Carcinogenicity:
Potassium Iodide - Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.

Section 12 - ECOLOGICAL INFORMATION
  Ecotoxicity:
Material Safety Data Sheet ; ;

Section 13 - DISPOSAL CONSIDERATIONS
  Dispose of in a manner consistent with federal, state, and local regulations.

Section 14 - TRANSPORT INFORMATION
 
IATA
Not regulated as a hazardous material.
IMO
Not regulated as a hazardous material.
RID/ADR
Not regulated as a hazardous material.

Section 15 - REGULATORY INFORMATION
 
European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: Not available.
Risk Phrases:
Safety Phrases:
WGK (Water Danger/Protection)
CAS# 7681-11-0: 1
Canada
CAS# 7681-11-0 is listed on Canada's DSL List.
CAS# 7681-11-0 is listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 7681-11-0 is listed on the TSCA inventory.


SECTION 16 - ADDITIONAL INFORMATION
N/A
SDS 1.0
Potassium iodide Suppliers
Company Name
Business Type
Location
Details
China Zhejiang Hangzhou
Request For Quotation
Other
China Shandong Weifang
Request For Quotation
China Shandong Qingdao
Request For Quotation
China Hunan Changsha
Request For Quotation
United States
Request For Quotation
China Shanghai Districts
Request For Quotation
China Shaanxi Xi'an
Request For Quotation
China Shandong Jinan
Request For Quotation
China Chongqing Districts
Request For Quotation
China Shaanxi Xi'an
Request For Quotation