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CAS No.: 68-22-4
Formula: C20H26O2
Exact Mass: 298.19300
Molecular Weight: 298.41900
PSA: 37.30000
LogP: 3.49250
Reference Price: $2,428/kg Inquiry Now
norethisterone 68-22-4 MSDS

Section 1. Chemical Product and Company Identification
    Common Name/
    Trade Name
    Commercial Name(s)
    Chemical Name
    Chemical Family

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 develops.    
    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.
    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 May be combustible at high temperature.
    Auto-Ignition Temperature Not available.
    Flash Points        Not available.    
    Flammable Limits        Not available.    
    Products of Combustion        Not available.    
    Fire Hazards in Presence of Slightly flammable to flammable in presence of heat.
    Various Substances        Non-flammable in presence of shocks.    
    Explosion Hazards in Presence Risks of explosion of the product in presence of mechanical impact: Not available.
    Risks of explosion of the product in presence of static discharge: Not available.
    of Various Substances
    SMALL FIRE: Use DRY chemical powder.
    Fire Fighting Media
    and Instructions        LARGE FIRE: Use water spray, fog or foam. Do not use water jet.    
    Not available.
    Special Remarks on
    Fire Hazards
    Special Remarks on Explosion Not available.

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        Use a shovel to put the material into a convenient waste disposal container. Finish cleaning by spreading water    
    on the contaminated surface and allow to evacuate through the sanitary system.

Section 7. Handling and Storage
    Precautions        Keep locked up.. Keep away from heat. Keep away from sources of ignition. Empty containers pose a fire risk,    
    evaporate the residue under a fume hood. Ground all equipment containing material. Do not ingest. Do not
    breathe dust. Wear suitable protective clothing. If ingested, seek medical advice immediately and show the
    container or the label. Keep away from incompatibles such as oxidizing agents.
    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. Gloves.    
    Personal Protection in Case of Splash goggles. Full suit. Dust respirator. Boots. Gloves. A self contained breathing apparatus should be used
    a Large Spill        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.)        Odor        Odorless.    
    Bitter. (Slight.)
    Molecular Weight        298.4 g/mole    
    Not applicable.
    pH (1% soln/water)
    Boiling Point        Not available.    
    Melting Point        204°C (399.2°F)    
    Critical Temperature        Not available.    
    Specific Gravity        Not available.    
    Not applicable.
    Vapor Pressure
    Vapor Density        Not available.    
    Not available.
    Odor Threshold        Not available.    
    Water/Oil Dist. Coeff.        The product is more soluble in oil; log(oil/water) = 3    
    Ionicity (in Water)        Not available.    
    Dispersion Properties        See solubility in water, diethyl ether.    
    Solubility        Partially soluble in diethyl ether.    
    Very slightly soluble in acetone.
    Insoluble in cold water.

Section 10. Stability and Reactivity Data
    Stability        The product is stable.    
    Not available.
    Instability Temperature
    Conditions of Instability        Excess heat, incompatible materials    
    Incompatibility with various Reactive with oxidizing agents.
    Not available.
    Special Remarks on        Not available.    
    Special Remarks on        Not available.    
    Will not occur.

Section 11. Toxicological Information
    Routes of Entry        Inhalation. Ingestion.    
    Toxicity to Animals        Acute oral toxicity (LD50): 6000 mg/kg [Mouse].    
    Chronic Effects on Humans        MUTAGENIC EFFECTS: Mutagenic for mammalian somatic cells.    
    DEVELOPMENTAL TOXICITY: Classified Reproductive system/toxin/female, Reproductive system/toxin/male
    May cause damage to the following organs: the reproductive system.
    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        May cause cancer.    
    Chronic Effects on Humans        May cause adverse reproductive effects(maternal and paternal effects, effects on male and female fertility) and    
    birth defects.
    Special Remarks on other        Acute Potential Health Effects:    
    Toxic Effects on Humans        Skin: May cause skin irritation.    
    Eyes: May cause eye irritation.
    Inhalation: May cause respiratory tract irritation.
    Ingestion: May cause gastrointestinal tract irritation. May affect endocrine system and skin (dermatitis), and

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

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).    
    Identification        Not applicable.    
    Not applicable.
    Special Provisions for
    DOT (Pictograms)

Section 15. Other Regulatory Information and Pictograms
    California prop. 65: This product contains the following ingredients for which the State of California has found to
    Federal and State
    cause cancer, birth defects or other reproductive harm, which would require a warning under the statute:
    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: Norethindrone
    California prop. 65: This product contains the following ingredients for which the State of California has found to
    cause cancer which would require a warning under the statute: Norethindrone
    Illinois toxic substances disclosure to employee act: Norethindrone
    Pennsylvania RTK: Norethindrone
    Minnesota: Norethindrone
    Massachusetts RTK: Norethindrone
    California Director's list of Hazardous Substances: Norethindrone
    California        California prop. 65: This product contains the following ingredients for which the State of California has found    
    Proposition 65        to cause cancer which would require a warning under the statute: Norethindrone    
    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: Norethindrone
    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)        R40- Possible risks of irreversible        S2- Keep out of the reach of children.    
    effects.        S36/37- Wear suitable protective clothing and    
    R60- May impair fertility.        gloves.    
    S45- In case of accident or if you feel unwell,
    seek medical advice immediately (show the
    label where possible).
    S53- Avoid exposure - obtain special
    instructions before use.
    Health Hazard
    HMIS (U.S.A.)        1 National Fire Protection    
    1 Flammability
    1 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.
    Dust respirator. Be sure to use an
    approved/certified respirator or


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