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Silicic acid hydrate
CAS No.: 1343-98-2
Formula: H2O3Si
Exact Mass: 77.97730
Molecular Weight: 78.09960
PSA: 57.53000
LogP: -1.61360
Reference Price: $211/kg Inquiry Now
Silicic acid hydrate 1343-98-2 MSDS

Section 1. Chemical Product and Company Identification
    Silicic acid
    Common Name/
    Trade Name
    Silicic acid

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. Get medical attention if irritation occurs.
    Skin Contact        Wash with soap and water. Cover the irritated skin with an emollient. Get medical attention if irritation    
    Serious Skin Contact        Not available.    
    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. Loosen tight clothing such as a collar, tie, belt or waistband. Get medical attention if
    symptoms appear.
    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 Substance can explode when wet and heated with magnesium.

Section 6. Accidental Release Measures
    Small Spill        Use appropriate tools to put the spilled solid in a convenient waste disposal container. Finish cleaning by    
    spreading water on the contaminated surface and dispose of according to local and regional authority
    Large Spill        Stop leak if without risk. Do not get water inside container. Do not touch spilled material. Use water spray to    
    on disposal. Finish cleaning by spreading water on the contaminated surface and allow to evacuate through
    the sanitary system. Be careful that the product is not present at a concentration level above TLV. Check
    TLV on the MSDS and with local authorities.
    Silicic acid

Section 7. Handling and Storage
    Precautions        Do not ingest. Do not breathe dust. Wear suitable protective clothing. If ingested, seek medical advice    
    immediately and show the container or the label.
    Storage        Keep container tightly closed. Keep container in a cool, well-ventilated area.    

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        Safety glasses. Lab coat. Dust respirator. Be sure to use an approved/certified respirator or equivalent.    
    Personal Protection in Case of Splash goggles. Full suit. Dust respirator. Boots. Gloves. A self contained breathing apparatus should be
    a Large Spill        used to avoid inhalation of the product. Suggested protective clothing might not be sufficient; consult a    
    specialist BEFORE handling this product.
    TWA: 6 (mg/m3) [Canada] Inhalation Total.
    Exposure Limits
    TWA: 10 (mg/m3) [United States] Inhalation Total.
    Consult local authorities for acceptable exposure limits.

Section 9. Physical and Chemical Properties
    Physical state and appearance Solid. (Amorphous solid powder )        Odor        Odorless.    
    Not available.
    60.09 g/mole + xH2O
    Molecular Weight
    Color        White.    
    pH (1% soln/water)        Not applicable.    
    Boiling Point        Not available.    
    Melting Point        Not available.    
    Not available.
    Critical Temperature
    Specific Gravity        2.1 (Water = 1)    
    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        Not available.    
    Insoluble in cold water.

Section 10. Stability and Reactivity Data
    Stability        The product is stable.    
    Instability Temperature        Not available.    
    Moisture, Incompatible materials.
    Conditions of Instability
    Incompatibility with various        Not available.    
    Corrosivity        Not available.    
    Special Remarks on        Incompatible with hydrogen fluoride, zenon hexafluoride, oxygen difluoride, and chlorine trifluoride.    
    Silicic acid
    Special Remarks on        Not available.    
    Polymerization        Will not occur.    

Section 11. Toxicological Information
    Routes of Entry        Inhalation. Ingestion.    
    Toxicity to Animals
    Acute oral toxicity (LD50): 4500 mg/kg [Rat [tests for FDA approval]].
    Acute dermal toxicity (LD50): >2000 mg/kg [Rabbit [48-hour dermal LD50 est.]].
    Acute toxicity of the dust (LC50): >2 mg/l 1 hours [Rat].
    Chronic Effects on Humans May cause damage to the following organs: lungs.
    Other Toxic Effects on        Slightly hazardous in case of skin contact (irritant), of ingestion, of inhalation.    
    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: Acts as a dessicant and may cause irritation with dryness of the skiin in cases of severe exposure    
    Eyes: No adverse effects expected, but dust may cause mechanical irritation.
    Inhalation: This material is a dessicant and may cause dryness ad irritation to mucous membranes and
    repiratory tract in case of severe exposure.
    Ingestion: May be harmful if swallowed in large amounts. However, no adverse effects are expected for
    normal industrial handling.
    Silicic Acid is a synthetic amorphous silica (non crystalline). Epidemological studies indicate a low potential
    for adverse health effects. It is believed to be a nuisance dust.
    Chronic Potential Health Effects:
    Inhalation: Prolonged or repeated inhalation may affect respiration/lungs (Fibrosis, focal (pneumoconiosis),
    and may cause weight loss.

Section 12. Ecological Information
    Ecotoxicity        Not available.    
    BOD5 and COD        Not available.    
    Possibly hazardous short term degradation products are not likely. However, long term degradation products
    Products of Biodegradation
    may arise.
    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

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

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

Section 15. Other Regulatory Information and Pictograms
    Federal and State        TSCA 8(b) inventory: Silicic acid    
    California prop. 65: This product contains the following ingredients for which the State of California has
    Proposition 65        found to cause cancer which would require a warning under the statute: No products were found.    
    California prop. 65: This product contains the following ingredients for which the State of California has
    found to cause birth defects which would require a warning under the statute: No products were found.
    Other Regulations        EINECS: This product is on the European Inventory of Existing Commercial Chemical Substances(EINECS    
    No. 215-683-2).
    Canada: Listed on Canadian Domestic Substance List (DSL).
    China: Listed on National Inventory.
    Japan: Not listed on National Inventory (ENCS).
    Korea: Listed on National Inventory (KECI).
    Philippines: Listed on National Inventory (PICCS).
    Australia: Listed on AICS.
    WHMIS (Canada) Not controlled under WHMIS (Canada).
    Other Classifications
    DSCL (EEC)
    Not available        Not available    
    Health Hazard
    HMIS (U.S.A.)        1 National Fire Protection    
    0 Flammability
    0 Association (U.S.A.)
    Fire Hazard
    1 0 Reactivity
    Specific hazard
    Personal Protection
    WHMIS (Canada)
    DSCL (Europe)
    TDG (Canada)
    ADR (Europe)
    Protective Equipment
    Lab coat.
    Silicic acid
    Dust respirator. Be sure to use an
    approved/certified respirator or


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