MATERIAL SAFETY DATA SHEET
L-CYSTEINE HCL ANHYDROUS
1. PRODUCT IDENTIFICATION
Synonyms: None
CAS No.: 52-89-1
Molecular Weight: 157.62
Chemical Formula: C3H7NO2S . HCl
2. COMPOSITION/INFORMATION ON INGREDIENTS
| Ingredient | CAS No | Percent | Hazardous |
| L-Cysteine Hydrochloride | 52-89-1 | 100% | Yes |
3. HAZARDS IDENTIFICATION
Emergency Overview
CAUTION! MAY BE HARMFUL IF SWALLOWED OR INHALED. MAY CAUSE IRRITATION TO SKIN, EYES, AND RESPIRATORY TRACT.
Health Rating: 1 - Slight
Flammability Rating: 1 - Slight
Reactivity Rating: 0 - None
Contact Rating: 1 - Slight
Lab Protective Equip: GOGGLES; LAB COAT
Storage Color Code: Orange (General Storage)
Potential Health Effects
Inhalation: May cause irritation to the respiratory tract. Symptoms may include coughing and shortness of breath. Higher exposures may cause symptoms similar to those of ingestion.
Ingestion: May cause mild irritation to the gastrointestinal tract. Large oral doses may cause general depressed activity.
Skin Contact: May cause irritation with redness and pain.
Eye Contact: May cause irritation, redness and pain.
Chronic Exposure: No adverse health effects expected.
Aggravation of Pre-existing Conditions: No information found.
4. FIRST AID MEASURES
Inhalation: Remove to fresh air. Get medical attention for any breathing difficulty.
Ingestion: If swallowed, give several glasses of water to drink to dilute. If large amounts were swallowed or symptoms occur, get medical advice. Never give anything by mouth to an unconscious person.
Skin Contact: Immediately flush skin with plenty of soap and water for at least 15 minutes. Remove contaminated clothing and shoes. Wash clothing before reuse. Thoroughly clean shoes before reuse. Get medical attention if irritation develops.
Eye Contact: Immediately flush eyes with plenty of water for at least 15 minutes, lifting upper and lower eyelids occasionally. Get medical attention if irritation persists.
5. FIRE FIGHTING MEASURES
Fire: Not considered to be a fire hazard.
Explosion: Not considered to be an explosion hazard.
Fire Extinguishing Media: Use any means suitable for extinguishing surrounding fire.
Special Information: In the event of a fire, wear full protective clothing and NIOSH-approved self-contained breathing apparatus with full facepiece operated in the pressure demand or other positive pressure mode.
6. ACCIDENTAL RELEASE MEASURES
Ventilate area of leak or spill. Wear appropriate personal protective equipment as specified in Section 8. Spills: Sweep up and containerize for reclamation or disposal. Vacuuming or wet sweeping may be used to avoid dust dispersal.
7. HANDLING AND STORAGE
Keep in a tightly closed container, stored in a cool, dry, ventilated area. Protect against physical damage. Containers of this material may be hazardous when empty since they retain product residues (dust, solids); observe all warnings and precautions listed for the product.
8. EXPOSURE CONTROLS/PERSONAL PROTECTION
Airborne Exposure Limits: None established.
Ventilation System:
In general, dilution ventilation is a satisfactory health hazard control for this substance. However, if conditions of use create discomfort to the worker, a local exhaust system should be considered.
Personal Respirators (NIOSH Approved):
For conditions of use where exposure to dust or mist is apparent and engineering controls are not feasible, a particulate respirator (NIOSH type N95 or better filters) may be worn. If oil particles (e.g. lubricants, cutting fluids, glycerin, etc.) are present, use a NIOSH type R or P filter. For emergencies or instances where the exposure levels are not known, use a full-face positive-pressure, air-supplied respirator. WARNING: Air-purifying respirators do not protect workers in oxygen-deficient atmospheres.
Skin Protection: Wear protective gloves and clean body-covering clothing.
Eye Protection:
Use chemical safety goggles and/or full face shield where dusting or splashing of solutions is possible. Maintain eye wash fountain and quick-drench facilities in work area.
9. PHYSICAL AND CHEMICAL PROPERTIES
Appearance: White Crystalline solid. Hygroscopic.
Odor: Hydrogen sulfide odor.
Solubility: Soluble in water.
Specific Gravity: No information found.
pH: No information found.
% Volatiles by volume @ 21C (70F): 0
Boiling Point: Decomposes at 175 - 178C.
Melting Point: No information found.
Vapor Density (Air=1): Not applicable.
Vapor Pressure (mm Hg): Not applicable.
Evaporation Rate (BuAc=1): No information found.
10. STABILITY AND REACTIVITY
Stability: Stable under ordinary conditions of use and storage. Decomposes and oxidizes slowly.
Hazardous Decomposition Products: May form hydrogen sulfide, hydrogen chloride, and oxides of carbon, sulfur and nitrogen.
Hazardous Polymerization: Will not occur.
Incompatibilities: Most common metals, iron and other heavy metals, copper, hydrogen chloride.
Conditions to Avoid: Light and incompatibles.
11. TOXICOLOGICAL INFORMATION
No LD50/LC50 information found relating to normal routes of occupational exposure. Investigated as a mutagen.
| Ingredient | Known | Anticipated | IARC Category |
| L-Cysteine | Hydrochloride | (52-89-1) | No No None |
12. ECOLOGICAL INFORMATION
Environmental Fate: No information found.
Environmental Toxicity: No information found.
13. DISPOSAL CONSIDERATIONS
Whatever cannot be saved for recovery or recycling should be managed in an appropriate and approved waste disposal facility. Processing, use or contamination of this product may change the waste management options. State and local disposal regulations may differ from federal disposal regulations. Dispose of container and unused contents in accordance with federal, state and local requirements.
14. TRANSPORT INFORMATION
Not regulated.
15. REGULATORY INFORMATION
--------\Chemical Inventory Status - Part 1\--------------
Ingredient TSCA EC Japan Australia
------------
L-Cysteine Hydrochloride (52-89-1)Yes Yes No Yes
--------\Chemical Inventory Status - Part 2\-------Canada--
Ingredient Korea DSL NDSL Phil.
------------------------------
L-Cysteine Hydrochloride (52-89-1)Yes Yes No Yes
--------\Federal, State & International Regulations - Part 1\
-SARA 302- ------SARA 313------
Ingredient RQ TPQ List Chemical Catg.
--------------------
L-Cysteine Hydrochloride (52-89-1)No No No No
--------\Federal, State & International Regulations - Part 2\
-RCRA- -TSCA- Ingredient CERCLA 261.33 8(d)
---------------------------
L-Cysteine Hydrochloride (52-89-1) No No No
Chemical Weapons Convention: No TSCA 12(b): No CDTA: No
SARA 311/312: Acute: Yes Chronic: No Fire: No Pressure: No
Reactivity: No (Pure / Solid)
Australian Hazchem Code: None allocated.
Poison Schedule: None allocated.
WHMIS:
This MSDS has been prepared according to the hazard criteria of the Controlled Products Regulations (CPR) and the MSDS contains all of the information required by the CPR.
NFPA Ratings: Health:
1 Flammability: 0
Reactivity: 0
Label Hazard Warning:
CAUTION! MAY BE HARMFUL IF SWALLOWED OR INHALED. MAY CAUSE IRRITATION TO SKIN, EYES, AND RESPIRATORY TRACT.
Label Precautions: Avoid contact with eyes, skin and clothing.
Wash thoroughly after handling.
Avoid breathing dust.
Keep container closed.
Use with adequate ventilation.
Label First Aid:
If swallowed, give several glasses of water to drink to dilute. If large amounts were swallowed or symptoms occur, get medical advice. Never give anything by mouth to an unconscious person. If inhaled, remove to fresh air. Get medical attention for any breathing difficulty. In case of contact, immediately flush eyes or skin with plenty of water for at least 15 minutes. Get medical attention if irritation develops or persists.
Product Use: Laboratory Reagent.
Revision Information: No Changes.
Produced by WIRUD Co.Ltd China