MSDS Name:   Potassium thiocyanate
Synonym:   Potassium rhodanide
Company:   AboutChem.com

**** SECTION 2 - COMPOSITION, INFORMATION ON INGREDIENTS ****

+----------------+--------------------------------------+----------+-----------+
| CAS# | Chemical Name | % | EINECS# |
|----------------|--------------------------------------|----------|-----------|
| 333-20-0 |Potassium thiocyanate | >98% | 206-370-1 |
+----------------+--------------------------------------+----------+-----------+
Hazard Symbols: XN
Risk Phrases: 20/21/22 32

**** SECTION 3 - HAZARDS IDENTIFICATION ****

EMERGENCY OVERVIEW
Harmful by inhalation, in contact with skin and if swallowed.
Contact with acids liberates very toxic gas.Light sensitive.Moisture
sensitive.

Potential Health Effects
Eye:
Causes redness and pain.
Skin:
May cause skin irritation. Harmful if absorbed through the skin.
Ingestion:
Harmful if swallowed. May cause irritation of the digestive tract.
May cause headache. May cause nausea and vomiting.
Inhalation:
Harmful if inhaled. May cause respiratory tract irritation.
Prolonged exposure may result in dizziness and general weakness.
Chronic:
Not available.

**** SECTION 4 - FIRST AID MEASURES ****

Eyes:
Flush eyes with plenty of water for at least 15 minutes,
occasionally lifting the upper and lower eyelids. Get medical aid.
Skin:
Get medical aid. Flush skin with plenty of water for at least 15
minutes while removing contaminated clothing and shoes.
Ingestion:
Get medical aid. Wash mouth out with water.
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.
Notes to Physician:

**** SECTION 5 - FIRE FIGHTING MEASURES ****

General Information:
As in any fire, wear a self-contained breathing apparatus in
pressure-demand, MSHA/NIOSH (approved or equivalent), and full
protective gear. Substance is noncombustible.
Extinguishing Media:
Use extinguishing media most appropriate for the surrounding fire.

**** 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.

**** SECTION 7 - HANDLING and STORAGE ****

Handling:
Avoid breathing dust, vapor, mist, or gas. Avoid contact with skin
and eyes.
Storage:
Store in a cool, dry place. Do not store in direct sunlight. Store
in a tightly closed container. Keep away from acids.

**** SECTION 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION ****

Engineering Controls:
Use adequate ventilation to keep airborne concentrations low.
Exposure Limits
CAS# 333-20-0:
United States OSHA: 5 mg/m3 TWA (listed under Cyanide anion).
Germany: (listed as cyanide anion): Skin absorber
Netherlands: (listed as cyanide anion): 5 mg/m3 MAC (as CN)

Personal Protective Equipment

Eyes:
Not available.
Skin:
Wear appropriate protective gloves to prevent skin
exposure.
Clothing:
Wear appropriate protective clothing to minimize
contact with skin.
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: 5.3-8.7 (5% aq.solution)
Vapor Pressure: < 1 hPa @ 20 deg C
Viscosity: Not available.
Boiling Point: Not available.
Freezing/Melting Point: 173 deg C
Autoignition Temperature: Not available.
Flash Point: Not available.
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature: 500 deg C
Solubility in water: 2170 g/l (20C)
Specific Gravity/Density:
Molecular Formula: CKNS
Molecular Weight: 97.18

**** SECTION 10 - STABILITY AND REACTIVITY ****

Chemical Stability:
Stable under normal temperatures and pressures.
Conditions to Avoid:
Incompatible materials, light, exposure to moist air or water.
Incompatibilities with Other Materials:
Acids, strong bases.
Hazardous Decomposition Products:
Hydrogen cyanide, carbon monoxide, oxides of nitrogen, oxides of
sulfur, carbon dioxide, cyanide fumes.
Hazardous Polymerization: Will not occur.

**** SECTION 11 - TOXICOLOGICAL INFORMATION ****

RTECS#:
CAS# 333-20-0: XL1925000
LD50/LC50:
CAS# 333-20-0: Oral, mouse: LD50 = 594 mg/kg; Oral, mouse: LD50 =
590 mg/kg; Oral, rat: LD50 = 854 mg/kg.
Carcinogenicity:
Potassium thiocyanate -
Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.

**** SECTION 12 - ECOLOGICAL INFORMATION ****



**** 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: XN
Risk Phrases:
R 20/21/22 Harmful by inhalation, in contact with
skin and if swallowed.
R 32 Contact with acids liberates very toxic gas.
Safety Phrases:
S 13 Keep away from food, drink and animal feeding
stuffs.
WGK (Water Danger/Protection)
CAS# 333-20-0: No information available.
Canada
CAS# 333-20-0 is listed on Canada's DSL List.
CAS# 333-20-0 is not listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 333-20-0 is listed on the TSCA inventory.

**** SECTION 16 - ADDITIONAL INFORMATION ****

MSDS Creation Date: 8/24/1997 Revision #4 Date: 9/20/2004

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