MATERIAL SAFETY DATA SHEET

L-CYSTEINE

1. IDENTIFICATION OF THE SUBSTANCE/PREPARATION AND COMPANY INFORMATION:

Synonyms: Beta-Mercaptoalanine

2. COMPOSITION / INFORMATION ON INGREDIENTS:

Components CAS No Weight% ACGIH Exposure OSHA Exposure limits
L-CYSTEINE Free Base 52-90-4 90-100% None None

3. HAZARDS IDENTIFICATION:

EMERGENCY OVERVIEW: Harmful by inhalation, in contact with skin and if swallowed.
Category of Danger: Harmful
Principle routes of exposure: Skin
Inhalation: Harmful by inhalation.
Ingestion: Harmful if swallowed
Skin contact: Harmful in contact with skin
Eye contact: Risk of serious damage to eyes Ansi Classification Irritant-eye, skin, respiratory Statements of Hazard HARMFUL IF SALLOWED, MAY BE HARMFUL IF ABSORBED THROUGH SKIN OR INHALED
Statemens of Spill or Lead Contain and/or absorb spill with inert material (e.g. sand, vermiculite), then place in suitable container. Do not flush to sewer or allow to enter waterways. Use appropriate personal protective equipment.
Statement of First Aid If swallowed, do NOT induce vomiting unless directed to do so by medical personnel. Never give anything by mouth to an unconscious person. Call a physician.
Incase of contact, immediately flush eyes with plenty of water for at least 15 minutes. Call a physician. Precautions Do not taste or swallow. Wash thoroughly after handling. Do not get in eyes, on skin, or on clothing. Wash thoroughly after handling. Avoid breathing vapors. Avoid prolonged or repeated contact with the skin, eyes or respiratory tract. Wash thoroughly after exposure.
General advice: In the case of accident or if you feel unwell, seek medical advice immediately (show the label where possible)
Inhalation: Move to fresh air. Call a physician immediately.
Skin contact: Rise immediately with plenty of water for at least 15 minutes call a physician immediately
Ingestion: Do not induce vomiting without medical advice. Never give anything by bouth to an unconscious person. Consult a physician.
Eye contact: Rinse immediately with plenty of water, also under the eyelids, for at least 15 minutes. Call a physician immediately. Rinse thoroughly with plenty of water for at least 15 minutes and consult physician
Protection of first-aiders: No information available
Medical conditions aggravated by exposure: None known.

4. FIRE RIGHTINE MEASURES:

Suitable extinguishing media: Use dry chemical, CO2, water spry or "alcohol" foam
Specific hazards: Burning products irritant fumes.
Unusual hazards: None known
Special protective equipment for firefighters: Wear self contained breathing apparatus for fire fighting if necessary
Specific methods: Water mist may be used to cool closed containers.
Flash point: Not determined
Autoignition temperature: Not determined

5. ACCIDENTAL RELEASE MEASURES:

Personal precautions: Use personal protective equipment.
Environmental precautions: Do not flush into surface water or sanitary sewer system.
Methods for cleaning up: Soak up with inert absorbent material.
6. HANDLING AND STORAGE:

Storage: Room temperature, Desiccate, store under nitrogen
Handling: Use only in area provided with appropriate exhaust Ventilation.
Safe handling advice: Wear personal protective equipment. Remove and wash contaminated clothing before reuse.
Technical measures/storage conditions: Keep containers tightly closed in a cool, well-ventilated Place. Keep container tightly closed in a dry and well-ventilated place.
Incompatible products: Oxidising and spontaneously flammable products

7. EXPOSURE CONTROLS/PERSONAL PROTECTION:

Engineering measures: Ensure adequate ventilation.
PERSONAL PROTECTIVE EQUIPMENT
Respiratory protection: Breathing apparatus only if aerosolor dust is formed
Hand protection: PVC or other plastic material gloves
Skin and body protection: Impervious clothing
Eye protection: Googles
Hygiene measures: Handle in accordance with good industrial hygiene and safety practice.
8. PHYSICAL AND CHEMICAL PROPERTIES: