L-Cystine, disodium salt

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.

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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 ContactNot available.
If inhaled, remove to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get
Inhalation
medical attention.
Serious InhalationNot 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 IngestionNot available.

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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

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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.

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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

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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

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Section 9. Physical and Chemical Properties
Solid.Odorless.
Physical state andO 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

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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

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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 onSlightly 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 otherAcute Potential Health Effects:
Toxic Effects on HumansSkin: 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.

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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

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

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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)

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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 RegulationsNot 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 ProtectionE
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.

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SECTION 16 - ADDITIONAL INFORMATION
N/A