Material Safety Data Sheet
Page 1 of 9
Muriate of Potash
1. CHEMICAL PRODUCT AND COMPANY IDENTIFICATION
Product Name: Muriate of Potash (MOP), all grades
Chemical Name: Potassium Chloride
Chemical Family: Inorganic Salt
Synonyms: Potash; MOP; Potassium Chloride; Potassium Muriate; Potassium Monochloride
Chemical Formula: KCl
Primary Use: Crop nutrient; Industrial applications
Responsible Party: IMC USA
100 South Saunders Road, Suite 300
Lake Forest, Illinois 60045
Non-Emergency
8:00 a.m. - 4:00 p.m. Central Time, Mon.- Fri.: 800-323-5523 or 847-739-1200
Technical Contact:
EMERGENCY OVERVIEW
24 Hour Emergency Telephone Number:
For Chemical Emergencies:
Spill, Leak, Fire or Accident
Call CHEMTREC
North America: 800-424-9300
Others: 703-527-3887 (collect)
Health Hazards: Avoid contact with eyes, skin and clothing. Wash thoroughly after handling. Potassium
chloride is generally recognized as safe (GRAS) when used in accordance with good
manufacturing practice.
Physical Hazards: None expected.
Physical Form: Solid.
Appearance: White to reddish-brown, crystalline or granular.
Odor: None.
NFPA HAZARD CLASS HMIS HAZARD CLASS
Health: 1 (Slight) Health: 1 (Slight)
Flammability: 0 (Least) Flammability: 0 (Least)
Instability: 0 (Least) Physical Hazard: 0 (Least)
Special Hazard: None
Status: Revised MSDS Issue Date: September 30 , 2003
Revised Sections: 1, 3, 4, 7, 11, 12, 15 MSDS Number: IGL002
627 Jefferson Street Lafayette, Louisiana 70501 337-264-1449 800-245-6743 Fax: 337-264-9359 www.cal-chlor.com
Material Safety Data Sheet
Muriate of Potash
Page 2 of 9
2. COMPOSITION/INFORMATION ON INGREDIENTS
Exposure Guideline
%
Component
Weight
Limits Agency Type
Potassium Chloride OSHA All
95 - 99.5 NE
CAS No. 7447-40-7 ACGIH All
Sodium Chloride OSHA All
0.3 - 3.7 NE
CAS No. 7647-14-5 ACGIH All
Calcium and Magnesium Chlorides and
OSHA All
Sulfates 0.2 - 1.3 NE
ACGIH All
CAS No. Various
NE = Not established, but the following particulate limits apply to all inert inorganic dusts.
10 mg/m3
Particulates Not Otherwise Classified TWA - Inhalable
ACGIH
3 mg/m3
(PNOC) TWA - Respirable
Particulates Not Otherwise Regulated TWA - Total Dust
15 mg/m3 OSHA
(PNOR) TWA - Respirable
5 mg/m3
Notes:
State, local or other agencies or advisory groups may have published more stringent limits. Consult an industrial
hygienist or similar professional, or your local agencies, for further information.
Status: Revised MSDS Issue Date: September 30 ,, 2003
Revised Sections: 1, 3, 4, 7, 11, 12, 15
e 7, MSDS Number:: IGL002
627 Jefferson Street Lafayette, Louisiana 70501 337-264-1449 800-245-6743 Fax: 337-264-9359 www.cal-chlor.com
Material Safety Data Sheet
Muriate of Potash
Page 3 of 9
3. HAZARDS IDENTIFICATION
POTENTIAL HEALTH EFFECTS
Eye: Contact may cause mild eye irritation including stinging, watering and redness.
Contact may cause mild irritation including redness and a burning sensation. No
Skin:
information available on skin absorption.
Inhalation
No information available.
(Breathing):
Ingestion
Low to moderate degree of toxicity by ingestion.
(Swallowing):
Effects of overexposure may include irritation of the nose, throat and digestive tract,
nausea, vomiting, diarrhea, abdominal cramping, irregular heartbeats (arrhythmias),
Signs and Symptoms:
dehydration, and hypertension. Repeated overexposure to dusts may result in irritation
of the respiratory tract, coughing and shortness of breath.
Cancer: Inadequate data available to evaluate the cancer hazard of this material.
Target Organs: No data available.
Developmental: Inadequate data available for this material.
Other Comments: None.
Pre-Existing Medical Conditions aggravated by exposure may include kidney disorders and high blood
Conditions: pressure (hypertension).
Status: Revised MSDS Issue Date: September 30 , 2003
Revised Sections: 1, 3, 4, 7, 11, 12, 15 MSDS Number: IGL002
627 Jefferson Street Lafayette, Louisiana 70501 337-264-1449 800-245-6743 Fax: 337-264-9359 www.cal-chlor.com
Material Safety Data Sheet
Muriate of Potash
Page 4 of 9
4. FIRST AID MEASURES
Eye: If irritation or redness develops, move victim away from exposure and into fresh air.
Flush eyes with clean water. If symptoms persist, seek medical attention.
Skin: Clense affected area(s) thoroughly by washing with mild soap and water. If irritation or
redness develops and persists, seek medical attention.
Inhalation If respiratory symptoms develop, move victim away from source of exposure and into
(Breathing): fresh air. If symptoms persist, seek medical attention. If victim is not breathing, clear
airway and immediately begin artificial respiration. If breathing difficulties develop,
oxygen should be administered by qualified personnel. Seek immediate medical
attention.
Ingestion If large amounts are swallowed, seek emergency medical attention. If victim is drowsy
(Swallowing): or unconscious and vomiting, place on left side with the head down and do not give
anything by mouth. If victim is conscious and alert and ingestion occurred within the
last hour, vomiting should be induced for ingestion of large amounts (more than 5
ounces or a little more than a cup in an adult) preferably under direction from a
physician or poison center. If possible, do not leave victim unattended and observe
closely for adequacy of breathing.
Note to Physicians: No information found.
5. FIRE FIGHTING MEASURES
This product is non-flammable.
Flammable
Properties: Flash Point - Not applicable.
OSHA Flammability Class - Not applicable.
LEL/UEL - Not applicable.
Autoignition Temperature - Not applicable.
Unusual Fire & No unusual fire or explosion hazards are expected. When this material is subjected to
Explosion Hazards: high temperatures, it may release small amounts of chloride gas.
Extinguishing Media: Use extinguishing agent suitable for type of surrounding fire.
Fire Fighting Positive pressure, self-contained breathing apparatus is required for all fire fighting
Instructions: activities involving hazardous materials. Full structural fire fighting (bunker) gear is the
minimum acceptable attire. The need for proximity, entry, flashover and/or special
chemical protective clothing (see Section 8) needs to be determined for each incident
by a competent fire fighting safety professional.
Water used for fire suppression and cooling may become contaminated. Discharge to
sewer system(s) or the environment may be restricted, requiring containment and
proper disposal of water (see Section 6).
Status: Revised MSDS Issue Date: September 30 , 2003
Revised Sections: 1, 3, 4, 7, 11, 12, 15 MSDS Number: IGL002
627 Jefferson Street Lafayette, Louisiana 70501 337-264-1449 800-245-6743 Fax: 337-264-9359 www.cal-chlor.com
Material Safety Data Sheet
Muriate of Potash
Page 5 of 9
6. ACCIDENTAL RELEASE MEASURES
Muriate of Potash is a crop nutrient and plant food, however, large spills can harm or kill vegetation.
鈥? Stay upwind and away from spill (dust hazard).
鈥? Wear appropriate protective equipment including respiratory protection as conditions warrant (see Section
8).
鈥? Prevent spilled material from entering sewers, storm drains, other unauthorized treatment drainage systems,
and natural waterways.
鈥? Notify appropriate federal, state, and local agencies as may be required (see Section 13).
鈥? Minimize dust generation.
鈥? Sweep up and package appropriately for disposal.
7. HANDLING AND STORAGE
Handling: The use of appropriate respiratory protection is advised when concentrations exceed
any established exposure limits (see Sections 2 and 8). Wash thoroughly after handling.
Wash contaminated clothing. Use good personal hygiene practice.
Storage: Keep container(s) tightly closed. When possible use and store this material in cool,
dry, well ventilated areas. Store only in approved containers. Keep away from any
incompatible material (see Section 10). Protect container(s) against physical damage.
8. EXPOSURE CONTROLS/PERSONAL PROTECTION
Engineering If current ventilation practices are not adequate to maintain airborne concentrations
Controls: below the established exposure limits (see Section 2), additional ventilation or exhaust
systems may be required.
Personal Protective Equipment (PPE)
Respiratory: A NIOSH approved air purifying respirator with a type 95 (R or P) particulate filter
may be used under conditions where airborne concentrations are expected to exceed
exposure limits (see Section 2). Protection provided by air purifying respirators is
limited (see manufacturer鈥檚 respirator selection guide). Use a positive pressure air
supplied respirator if there is potential for uncontrolled release, exposure levels are not
known, or any other circumstances where air purifying respirators may not provide
adequate protection. A respiratory protection program that meets OSHAs 29 CFR
1910.134 and ANSI Z88.2 requirements must be followed if workplace conditions
warrant a respirator.
Status: Revised MSDS Issue Date: September 30 , 2003
Revised Sections: 1, 3, 4, 7, 11, 12, 15 MSDS Number: IGL002
627 Jefferson Street Lafayette, Louisiana 70501 337-264-1449 800-245-6743 Fax: 337-264-9359 www.cal-chlor.com
Material Safety Data Sheet
Muriate of Potash
Page 6 of 9
Personal Protective Equipment (PPE)
Skin: The use of cloth or leather work gloves is advised to prevent skin contact, possible
irritation and absorption (see glove manufacturer literature for information on
permeability).
Eye/Face: Approved eye protection to safeguard against potential eye contact, irritation, or injury
is recommended. Depending on conditions of use, a face shield may be necessary.
Other PPE: A source of clean water should be available in the work area for flushing eyes and skin.
Impervious clothing should be worn as needed.
9. PHYSICAL AND CHEMICA L PROPERTIES
Note: Unless otherwise stated, values are determined at 20掳C (68掳F) and 760 mm Hg (1 atm).
Flash Point: Not applicable.
Flammable/
Explosive Limits LEL/UEL - Not applicable.
(%):
Autoignition
Not applicable.
Temperature:
Appearance: White to reddish-brown, crystalline or granular.
Physical State: Solid.
Odor/Taste : None / Strong saline.
Molecular Weight of
KCl - 74.6; NaCl - 58.5
Pure Material:
pH: 5.4 - 10.0 in a 5% solution.
Vapor Pressure
Approximately zero.
(mm Hg):
Vapor Density
2.57
(air=1):
Boiling Point: Sublimes at 1,500掳C (2,732掳F).
Freezing/Melting
772 to 776掳C (1423 to 1428掳F).
Point:
Solubility in Water: 99 .5 - 99.999%; 34.2 g/100mL at 20掳C.
Specific Gravity: 1.986 - 1.990
Volatility: No data available.
Loose - 64 to 75 lbs/ft 3 (1025 to 1200 kg/m3).
Bulk Density:
Status: Revised MSDS Issue Date: September 30 , 2003
Revised Sections: 1, 3, 4, 7, 11, 12, 15 MSDS Number: IGL002
627 Jefferson Street Lafayette, Louisiana 70501 337-264-1449 800-245-6743 Fax: 337-264-9359 www.cal-chlor.com
Material Safety Data Sheet
Muriate of Potash
Page 7 of 9
10. STABILITY AND REACTIVITY
Stable under normalconditions of storage and handling. Materialis hygro-
Chemical Stability: scopic (may absorb moisture fromair whenrelative humidity > 72%).
None known.
Conditions to Avoid:
Avoid contact with hot nitric acid, may cause evolution of toxic nitrosyl
chloride. Contact with other strong acids may produce irritating hydrogen
chloride gas. KCl may react violently with bromine trifluoride and may
explode if mixed with potassium permanganate and sulfuric acid. NaCl can
react with most noble metals, such as iron or steel, building materials (such as
Incompatible Materials:
cement), bromine, or trifluoride. A potentially explosive reaction may occur if
NaCl is mixed with dichloromaleic anhydride and urea. Electrolysis of
mixtures containing NaCl and nitrogen compounds may form explosive
nitrogen trichloride.
Similar to salt. Mildly corrosive to metals in the presence of moisture.
Corrosivity:
Hazardous Decomposition
None known.
Products:
Will not occur.
Hazardous Polymerization:
11.TOXICOLOGICAL INFORMATION
Potassium Chloride: LD50 (rat, oral) = 2.6 g/kg LD50 (mouse, oral) = 1.5 g/kg
LC50: no information available
Eye (rabbit): 500 mg/24 H, mild irritant
Inadequate carcinogenicity, mutagenicity, or developmental toxicity data located for
potassium chloride. No target organ data located for potassium chloride
Sodium Chloride: LD50 (rat, oral) = 3 g/kg; LD50 (mouse, oral) = 4 g/kg
LC50 (rat) > 42 g/m3 / 1hour.
Eye (rabbit): 100 mg/24 hour, moderate irritant.
Eye (rabbit): 500 mg/24 hour, mild irritant.
Inadequate carcinogenicity, mutagenicity, or developmental toxicity data located for
sodium chloride. No target organ data located for sodium chloride.
Status: Revised MSDS Issue Date: September 30 , 2003
Revised Sections: 1, 3, 4, 7, 11, 12, 15 MSDS Number: IGL002
627 Jefferson Street Lafayette, Louisiana 70501 337-264-1449 800-245-6743 Fax: 337-264-9359 www.cal-chlor.com
Material Safety Data Sheet
Muriate of Potash
Page 8 of 9
12. ECOLOGICAL INFORMATI ON
Ecotoxicity: Dissolution of large quantities of potassium chloride and sodium chloride in water may
create an elevated level of salinity that may be harmful to fresh water aquatic species
and to plants that are not salt-tolerant.
Potassium Chloride:
Lepomis macrochirus LC50 - 2010 mg/l
Physa heterostropha LC50 - 940 mg/l
Scenedesmus subspicatus EC50 - 2500 mg/l
Sodium Chloride:
Ceriodaphnia dubia LC50 - 280,000 - 3,540,000 ug/l
Daphnia magnia LC50 - 3,114,000 - 10,000,000 ug/l
Daphnia pulex EC50 - 56.40 mM
Pimephales promelas LD50 - 6,020,000 - 10,000,000 ug/l
BOD and COD: No data found.
13.DISPOSAL CO NSIDERATIONS
This material, if discarded as produced, is not an RCRA 鈥渓isted鈥? or 鈥渃haracteristic鈥? hazardous waste.
Contamination may subject it to hazardous waste regulations. Properly characterize all waste materials. Consult
state and local regulations regarding the proper disposal of this material.
14.TRANSPORT INFORMATION
Hazard Class or Not listed in the hazardous materials shipping regulations (49 CFR, Table 172.101) by
Division: the U.S. Department of Transportation, or in the Transport of Dangerous Goods
(TDG) regulations in Canada.
Status: Revised MSDS Issue Date: September 30 , 2003
Revised Sections: 1, 3, 4, 7, 11, 12, 15 MSDS Number: IGL002
627 Jefferson Street Lafayette, Louisiana 70501 337-264-1449 800-245-6743 Fax: 337-264-9359 www.cal-chlor.com
Material Safety Data Sheet
Muriate of Potash
Page 9 of 9
15. REGULATORY INFORMATI ON
FDA: 1. Potassium Chloride used as a dietary supplement in food for human
consumption is generally recognized as safe (GRAS) when used in accordance
with good manufacturing practice [21 CFR 182.5622].
2. Substance added directly to human food affirmed as GRAS [21 CFR
184.1622].
CERCLA: Not listed.
RCRA 261.33: Not listed.
SARA 302: RQ: No; TPQ: No.
SARA 311/312: Acute: No; Chronic: No; Fire: No; Pressure: No; Reactivity: No
SARA Title III: - Exemptions at 40 CFR, Part 370 may apply for agricultural use, or quantities of less
than 10,000 pounds on-site.
SARA 313 List: No.
TSCA: 8(b) Chemical Inventory: Yes; TSCA 8(d): No
Proposition 65: Warning: This product contains substances that are known to the state of California to
(CA Health & Safety cause cancer and/or reproductive harm.
Code Section 25249.5)
NTP, IARC, OSHA: This material has not been identified as a carcinogen by NTP, IARC, or OSHA.
Canada DSL: Yes.
Canada NDSL: No.
WHMIS: Not controlled.
16.OTHER INFORMATION
The information in this document is believed to be correct as of the date issued. HOWEVER, NO WARRANTY
OF MERCHANTABILITY, FITNESS FOR ANY PARTICULAR PURPOSE, OR ANY OTHER
WARRANTY IS EXPRESSED OR IS TO BE IMPLIED REGARDING THE AC CURACY OR
COMPLETENESS OF THIS INFORMATION, THE RESULTS TO BE OBTAINED FROM THE
USE OF THIS INFORMATION OR THE PRODUCT, THE SAFETY OF THIS PRODUCT, OR THE
HAZARDS RELATED TO ITS USE. This information and product are furnished on the condition that the
person receiving them shall make his own determination as to suitability of the product for his particular purpose and
on the condition that he assume the risk of his use thereof.
Status: Revised MSDS Issue Date: September 30 , 2003
Revised Sections: 1, 3, 4, 7, 11, 12, 15 MSDS Number: IGL002
627 Jefferson Street Lafayette, Louisiana 70501 337-264-1449 800-245-6743 Fax: 337-264-9359 www.cal-chlor.com
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