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CAS No.: 6381-79-9
Formula: C2H6K4O9
Exact Mass: 329.85600
Molecular Weight: 330.45700
PSA: 154.07000
LogP: -5.08690
Reference Price: $1,323/ton Inquiry Now

Section 1. Chemical Product and Company Identification
    Potassium carbonate Sesquihydrate
    Common Name/
    Trade Name
    Commercial Name(s)
    Chemical Name
    Chemical Family
    Potassium carbonate Sesquihydrate
    CARCINOGENIC EFFECTS: Not available.
    Potential Chronic Health
    Effects        MUTAGENIC EFFECTS: Not available.    
    TERATOGENIC EFFECTS: Not available.
    The substance is toxic to mucous membranes.
    The substance may be toxic to skin, eyes.
    Repeated or prolonged exposure to the substance can produce target organs damage. Repeated exposure of the
    eyes to a low level of dust can produce eye irritation. Repeated skin exposure can produce local skin destruction,
    or dermatitis. Repeated inhalation of dust can produce varying degree of respiratory irritation or lung damage.

Section 4. First Aid Measures
    Eye Contact        Check for and remove any contact lenses. In case of contact, immediately flush eyes with plenty of water for at    
    least 15 minutes. Cold water may be used. Get medical attention immediately.
    Skin Contact        In case of contact, immediately flush skin with plenty of water for at least 15 minutes while removing contaminated    
    clothing and shoes. Cover the irritated skin with an emollient. Cold water may be used.Wash clothing before
    reuse. Thoroughly clean shoes before reuse. Get medical attention immediately.
    Serious Skin Contact        Wash with a disinfectant soap and cover the contaminated skin with an anti-bacterial cream. Seek immediate    
    medical attention.
    Inhalation        If inhaled, remove to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get    
    medical attention immediately.
    Serious Inhalation        Not available.    
    Ingestion        Do NOT induce vomiting unless directed to do so by medical personnel. Never give anything by mouth to an    
    unconscious person. If large quantities of this material are swallowed, call a physician immediately. Loosen tight
    clothing such as a collar, tie, belt or waistband.
    Serious Ingestion        Not available.    

Section 5. Fire and Explosion Data
    Flammability of the Product Non-flammable.
    Auto-Ignition Temperature Not applicable.
    Flash Points        Not applicable.    
    Flammable Limits        Not applicable.    
    Products of Combustion        Not available.    
    Fire Hazards in Presence of Not applicable.
    Various Substances
    Explosion Hazards in Presence Risks of explosion of the product in presence of mechanical impact: Not available.
    of Various Substances        Risks of explosion of the product in presence of static discharge: Not available.    
    Fire Fighting Media        Not applicable.    
    and Instructions
    Special Remarks on        Not available.    
    Fire Hazards
    Special Remarks on Explosion Not available.
    Potassium carbonate Sesquihydrate

Section 6. Accidental Release Measures
    Small Spill        Use appropriate tools to put the spilled solid in a convenient waste disposal container. If necessary: Neutralize    
    the residue with a dilute solution of acetic acid. Finish cleaning by spreading water on the contaminated
    surface and dispose of according to local and regional authority requirements.
    Large Spill        Corrosive solid.    
    Stop leak if without risk. Do not get water inside container. Do not touch spilled material. Use water spray to
    disposal. Neutralize the residue with a dilute solution of acetic acid. Finish cleaning by spreading water on the
    contaminated surface and allow to evacuate through the sanitary system.

Section 7. Handling and Storage
    Precautions        Keep container dry. Do not ingest. Do not breathe dust. Never add water to this product. In case of insufficient    
    ventilation, wear suitable respiratory equipment. If ingested, seek medical advice immediately and show the
    container or the label. Avoid contact with skin and eyes. Keep away from incompatibles such as oxidizing agents,
    metals, acids.
    Storage        Keep container tightly closed. Keep container in a cool, well-ventilated area. Do not store above 25°C (77°F).    

Section 8. Exposure Controls/Personal Protection
    Engineering Controls        Use process enclosures, local exhaust ventilation, or other engineering controls to keep airborne levels below    
    recommended exposure limits. If user operations generate dust, fume or mist, use ventilation to keep exposure to
    airborne contaminants below the exposure limit.
    Personal Protection        Splash goggles. Synthetic apron. Vapor and dust respirator. Be sure to use an approved/certified respirator or    
    equivalent. Gloves.
    Personal Protection in Case of Splash goggles. Full suit. Vapor and dust respirator. Boots. Gloves. A self contained breathing apparatus
    a Large Spill        should be used to avoid inhalation of the product. Suggested protective clothing might not be sufficient; consult a    
    specialist BEFORE handling this product.
    Exposure Limits        Not available.    

Section 9. Physical and Chemical Properties
    Physical state and appearance Solid. (Powdered solid. Deliquescent solid.)        Odor        Odorless.    
    Taste        Not available.    
    165.23 g/mole
    Molecular Weight
    Color        White.    
    pH (1% soln/water)        11.6 [Basic.]    
    Boiling Point        Decomposes.    
    Melting Point        891.11°C (1636°F)    
    Critical Temperature        Not available.    
    Specific Gravity        Not available.    
    Not applicable.
    Vapor Pressure
    Vapor Density        Not available.    
    Volatility        Not available.    
    Odor Threshold        Not available.    
    Water/Oil Dist. Coeff.        Not available.    
    Not available.
    Ionicity (in Water)
    Dispersion Properties        See solubility in water.    
    Soluble in cold water.
    Potassium carbonate Sesquihydrate

Section 10. Stability and Reactivity Data
    The product is stable.
    Instability Temperature        Not available.    
    Dust generation, moist air, water, incompatible materials.
    Conditions of Instability
    Reactive with oxidizing agents, metals, acids.
    Incompatibility with various
    Slightly reactive to reactive with moisture.
    Corrosivity        Non-corrosive in presence of glass.    
    Special Remarks on        Reacts with water to evolve heat.    
    Reactivity        When it contains the full amount of water it is not hygroscopic.    
    Incompatible with KCO, chlorine trifluoride, calcium oxide, and magnesium
    Not available.
    Special Remarks on
    Polymerization        Will not occur.    

Section 11. Toxicological Information
    Routes of Entry        Eye contact. Inhalation. Ingestion.    
    Toxicity to Animals        Acute oral toxicity (LD50): 1870 mg/kg [Rat ].    
    Chronic Effects on Humans        Causes damage to the following organs: mucous membranes.    
    May cause damage to the following organs: skin, eyes.
    Other Toxic Effects on
    Extremely hazardous in case of skin contact (corrosive), of inhalation (lung corrosive).
    Humans        Hazardous in case of skin contact (irritant), of ingestion, .    
    Slightly hazardous in case of eye contact (corrosive).
    Special Remarks on        Not available.    
    Toxicity to Animals
    Special Remarks on        Not available.    
    Chronic Effects on Humans
    Special Remarks on other        Acute Potential Health Effects:    
    Toxic Effects on Humans        Skin: Causes severe skin irritation.    
    Eyes: It is severely irritating to the eyes and its mucous membranes. It may cause corneal injury. It may cause
    burns and loss of vision. It may cause permanent damage. The amount of tissue damage depends on the length
    of contact.
    Ingestion: It causes gastrointestinal irritation with nausea, vomiting, abdominal pain, swollen glottis, increased
    respiration, and possible burns to the lips, tongue, oral mucosa, hypopharynx, stomach, or esophagus. It may
    affect the cardiovascular system(circulatory collapse), urinary system, and metabolism.
    Inhalation: Causes respiratory tract and mucous membrane irritation. Exposure can cause coughing, chest
    pains, and difficulty breathing (dyspnea).

Section 12. Ecological Information
    Not available.
    BOD5 and COD        Not available.    
    Products of Biodegradation        Possibly hazardous short term degradation products are not likely. However, long term degradation products may    
    The products of degradation are less toxic than the product itself.
    Toxicity of the Products
    of Biodegradation
    Special Remarks on the        Not available.    
    Products of Biodegradation
    Potassium carbonate Sesquihydrate

Section 13. Disposal Considerations
    Waste Disposal        Waste must be disposed of in accordance with federal, state and local environmental    
    control regulations.

Section 14. Transport Information
    DOT Classification        Not a DOT controlled material (United States).    
    Not applicable.
    Not applicable.
    Special Provisions for
    DOT (Pictograms)

Section 15. Other Regulatory Information and Pictograms
    No products were found.
    Federal and State
    Proposition 65
    Other Regulations        OSHA: Hazardous by definition of Hazard Communication Standard (29 CFR 1910.1200).    
    EINECS: This product is on the European Inventory of Existing Commercial Chemical Substances.
    WHMIS (Canada) Not controlled under WHMIS (Canada).
    Other Classifications
    DSCL (EEC)        R22- Harmful if swallowed.        S1/2- Keep locked up and out of the reach of    
    R36/37/38- Irritating to eyes,        children.    
    respiratory system and skin.        S26- In case of contact with eyes, rinse    
    immediately with plenty of water and seek
    medical advice.
    S36/37/39- Wear suitable protective clothing,
    gloves and eye/face protection.
    S45- In case of accident or if you feel unwell,
    seek medical advice immediately (show the
    label where possible).
    S46- If swallowed, seek medical advice
    immediately and show this container or label.
    Health Hazard
    HMIS (U.S.A.)        2 National Fire Protection    
    0 Flammability
    0 Association (U.S.A.)
    Fire Hazard
    2 0 Reactivity
    Specific hazard
    Personal Protection
    WHMIS (Canada)
    Potassium carbonate Sesquihydrate
    DSCL (Europe)
    TDG (Canada)
    ADR (Europe)
    Protective Equipment
    Synthetic apron.
    Vapor and dust respirator. Be sure to
    use an approved/certified respirator or


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