---

Section 1. Chemical Product and Company Identification
    L-Cystine, Disodium Salt, Monohydrate
    Common Name/
    Trade Name
    L-Cystine, Disodium Salt, Monohydrate

---

Section 3. Hazards Identification
    Slightly hazardous in case of skin contact (irritant), of eye contact (irritant), of ingestion, of inhalation.
    Potential Acute Health
    Effects
    CARCINOGENIC EFFECTS: Not available.
    Potential Chronic Health
    MUTAGENIC EFFECTS: Not available.
    Effects
    TERATOGENIC EFFECTS: Not available.
    DEVELOPMENTAL TOXICITY: Not available.
    Repeated or prolonged exposure is not known to aggravate medical condition.

---

Section 4. First Aid Measures
    Check for and remove any contact lenses. In case of contact, immediately flush eyes with plenty of water for at least
    Eye Contact
    15 minutes. Cold water may be used. Get medical attention if irritation occurs.
    Wash with soap and water. Cover the irritated skin with an emollient. Get medical attention if irritation develops.
    Skin Contact
    Cold water may be used.
    Serious Skin Contact        Not available.    
    If inhaled, remove to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get
    Inhalation
    medical attention.
    Serious Inhalation        Not available.    
    Do NOT induce vomiting unless directed to do so by medical personnel. Never give anything by mouth to an
    Ingestion
    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 May be combustible at high temperature.
    Auto-Ignition Temperature Not available.
    Not available.
    Flash Points
    Not available.
    Flammable Limits
    These products are carbon oxides (CO, CO2), nitrogen oxides (NO, NO2...), sulfur oxides (SO2, SO3...). Some
    Products of Combustion
    metallic oxides.
    Fire Hazards in Presence of Slightly flammable to flammable in presence of heat.
    Various Substances
    Risks of explosion of the product in presence of mechanical impact: Not available.
    Explosion Hazards in
    Risks of explosion of the product in presence of static discharge: Not available.
    Presence of Various
    Substances
    SMALL FIRE: Use DRY chemical powder.
    Fire Fighting Media
    LARGE FIRE: Use water spray, fog or foam. Do not use water jet.
    and Instructions
    Not available.
    Special Remarks on
    Fire Hazards
    Not available.
    Special Remarks on
    Explosion Hazards
    L-Cystine, Disodium Salt, Monohydrate

---

Section 6. Accidental Release Measures
    Use appropriate tools to put the spilled solid in a convenient waste disposal container. Finish cleaning by spreading
    Small Spill
    water on the contaminated surface and dispose of according to local and regional authority requirements.
    Use a shovel to put the material into a convenient waste disposal container. Finish cleaning by spreading water on
    Large Spill
    the contaminated surface and allow to evacuate through the sanitary system.

---

Section 7. Handling and Storage
    Keep away from heat. Ground all equipment containing material. Do not breathe dust. Keep away from
    Precautions
    incompatibles such as oxidizing agents, alkalis.
    Keep container tightly closed. Keep container in a cool, well-ventilated area.
    Storage

---

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

---

Section 9. Physical and Chemical Properties
    Solid.        Odorless.    
    Physical state and        O dor    
    appearance
    Not available.
    Taste
    302.26 g/mole
    Molecular Weight
    White. Off-white.
    Color
    9.5 - 11.0[Basic.]
    pH (1% soln/water)
    Not available.
    Boiling Point
    Not available.
    Melting Point
    Not available.
    Critical Temperature
    Not available.
    Specific Gravity
    Not applicable.
    Vapor Pressure
    Not available.
    Vapor Density
    Not available.
    Volatility
    Not available.
    Odor Threshold
    Not available.
    Water/Oil Dist. Coeff.
    Not available.
    Ionicity (in Water)
    See solubility in water.
    Dispersion Properties
    Soluble in cold water.
    Solubility
    Solubility in Water: 100 g/L
    L-Cystine, Disodium Salt, Monohydrate

---

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

---

Section 11. Toxicological Information
    Inhalation. Ingestion.
    Routes of Entry
    LD50: Not available.
    Toxicity to Animals
    LC50: Not available.
    Chronic Effects on Humans Not available.
    Other Toxic Effects on        Slightly hazardous in case of skin contact (irritant), of ingestion, of inhalation.    
    Humans
    Not available.
    Special Remarks on
    Toxicity to Animals
    Not available.
    Special Remarks on
    Chronic Effects on Humans
    Special Remarks on other        Acute Potential Health Effects:    
    Toxic Effects on Humans        Skin: May cause skin irritation.    
    Eyes: May cause eye irritaiton by mechanical action.
    Inhalation: May cause respiratory tract irritation.
    Ingestion: Expected low hazard and low toxicity.

---

Section 12. Ecological Information
    Not available.
    Ecotoxicity
    Not available.
    BOD5 and COD
    Products of Biodegradation Possibly hazardous short term degradation products are not likely. However, long term degradation products may
    arise.
    The product itself and its products of degradation are not toxic.
    Toxicity of the Products
    of Biodegradation
    Not available.
    Special Remarks on the
    Products of Biodegradation
    L-Cystine, Disodium Salt, Monohydrate

---

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

---

Section 14. Transport Information
    Not a DOT controlled material (United States).
    DO T Cl assi fi cati on
    Not applicable.
    Identification
    Not applicable.
    Special Provisions for
    Transport
    DO T (Pi ctograms)

---

Section 15. Other Regulatory Information and Pictograms
    No products were found.
    Federal and State
    Regulations
    California prop. 65: This product contains the following ingredients for which the State of California has found to
    California
    cause cancer which would require a warning under the statute: No products were found.
    Proposition 65
    Warnings
    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        Not available.    
    WHMIS (Canada) Not controlled under WHMIS (Canada).
    Other Classifications
    This product is not classified according Not applicable.
    DSCL (EEC)
    to the EU regulations.
    Health Hazard
    HMIS (U.S.A.)        1 National Fire Protection    
    1 Flammability
    1 Association (U.S.A.)
    Fire Hazard
    1 0 Reactivity
    Health
    Reactivity
    0
    Specific hazard
    Personal Protection        E    
    WHMIS (Canada)
    (Pictograms)
    DSCL (Europe)
    (Pictograms)
    TDG(Canada)
    (Pictograms)
    L-Cystine, Disodium Salt, Monohydrate
    ADR (Europe)
    (Pictograms)
    Protective Equipment
    Gloves.
    Lab coat.
    Dust respirator. Be sure to use an
    approved/certified respirator or equivalent.

---

SECTION 16 - ADDITIONAL INFORMATION
N/A