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Section 01 Identification
Date Effective........... January 8, 2009
(most recent revision)
Chemical Name/Synonyms... Molybdenum disulfide
Product Use.............. Substrates for
scanning probe
microscopy analysis
Chemical family.......... N/A
Emergencies Contacting CHEMTREC 24 Hour Emergency
Use Only #'s............. Worldwide phone : 1-(703)-527-3887
Worldwide FAX : 1-(703)-741-6090
Toll-free phone : 1-(800)-424-9300 USA only
Product or Trade Name.... SPI-Chem™ Moly Disulfide (MoS2)
CAS #.................... 1317-33-5
Chemical Formula......... MoS2
INGREDIENT NAME CAS NUMBER WEIGHT % Molybdenum disulfide 1317-33-5 99.8+% RTECS No.: QA4697000 OSHA PEL: 10 mg/m3 T Dust (Mo) ACGIH TLV: 10 mg/m3 (Mo) ACGIH STEL: N/P
Emergency overview:
Supplied in single crystal "chunks". Not considered hazardous.
The materials can be cleaved ("micaceous cleavage") to expose freshly
cleaved surfaces, a procedure that is generally not expected to generate
a particulates hazard. If the material is cut with a scissors, or scored
with a diamond scribe, then it could be expected that particulates would
be generated.
Potential Health Hazards:
Skin:
Not considered hazardous, though dust, if generated could be
irritating.
Eyes:
Not considered hazardous. May cause mechanical irritation if
particles are generated and they should get into the eye.
Inhalation:
Not a route of exposure under normal usage, unless the materials is
excessively cut or even ground, to generate dust particles. May be
harmful if inhaled over a long period of time and may also cause
delayed lung injury. Always avoid breathing dust of this material.
Ingestion:
Not a route of exposure. Not considered hazardous.
Delayed Effects:
None known.
Conditions Aggravated by Exposure:
No known conditions are aggravated by this material.
Effects of Over Exposure:
Shortness of breath or dry cough are the first symptoms. If such
symptoms occur, remove to fresh air and contact physician.
Carcinogenicity:
Molybdenum disulfide is not listed as a carcinogen or potential
carcinogen by the National Toxicology Program of the U. S. Public
Health Service, nor has it been found to be a carcinogen or potential
carcinogen by OSHA or the Int'l Agency for Research on Cancer.
Ingredients found on one of the OSHA designated carcinogen
lists are listed below.
INGREDIENT NAME NTP STATUS IARC STATUS OSHA LIST
None found
Take proper precautions to ensure your own health and safety before attempting
to rescue and providing first aid. For specific information refer to the
Emergency Overview in Section of this MSDS.
Skin:
Not hazardous if used as microscopy substrate materials. If particulates
are being generated and the skin is contaminated, wash thoroughly with soap
and water.
Eyes:
None needed under normal usage. If material comes into contact
with the eye, flush eyes with water while holding eyelids apart
to ensure complete irrigation. When cleaving, always wear safety
glasses. In general, even when cleaving, we do not expect this to
become an eye hazard.
Inhalation:
None needed under normal usage. If particulates are being generated,
then victim should be at once removed to fresh air and if respiratory
distress continues, a physician contacted.
Ingestion:
None needed.
Advice to physician:
None.
Flammable Properties
Flash Point: Non-flammable, Non explosive; therefore not applicable.
Flash Point Method: Not applicable.
Autoignition Temperature: Not determined.
Upper flame limit (volume % in air):
Not applicable. Non-volatile solid. Lower flame limit
(volume % in air): Not applicable. Non-volatile solid.
Flame propagation rate (solids):
Not determined.
OSHA Flammability class:
Not determined.
Extinguishing Media:
Use whatever would be appropriate for the surrounding fire.
Unusual Fire and Explosion Hazards:
Material will produce sulfur dioxide when burned. Violent reaction
with hydrogen peroxide can occur.
Special Fire Fighting Precautions/Instructions:
None
In Case of Spill or Other Release: (Always wear recommended personal protective equipment.) Collect and place in a solid waste container. Material is not dangerous if spilled. Wash away with water or vacuum with high efficiency HEPA filter. Powder or flakes of the material could become slippery and constitute a "slip and fall" hazard. In the unlikely event MoS2 containing material did get out into the environment, remember it can be absorbed by vermiculite, dry sand, earth, or similar materials.
Normal Handling: (Always wear recommended personal protective equipment.) Use normal personal hygiene and good housekeeping. Storage Recommendations: No special recommendations. However, to extend the shelf life of the products, we would recommend that material be stored in dry environment.
Engineering Controls:
None needed if material is used as it was intended to be used, that is, as a
substrate for microscopy research and testing. But if the material is processed,
and particulates are generated, the one must use NIOSH/MSHA approved respirators
if the TLV is exceeded.
Personal Protective Equipment:
Safety glasses if cleaving or cutting operations are anticipated.
Skin Protection:
Not normally required unless cutting or grinding is contemplated.
Eye Protection:
As a general practice in manufacturing areas, safety glasses that
conform to ANSI Z87.1 should be worn.
Respiratory Protection:
Under normal usage, not normally required. A NIOSH/MSHA approved
respirator should be worn in areas where the PEL/TLV is exceeded.
Additional Recommendations:
Use protective rubber gloves on hands and safety goggles on the face.
Exposure Guidelines
INGREDIENT NAME ACGIH TLV OSHA PEL OTHER LIMIT
No ingredients listed in this section.
Other Exposure Limits for Potential Decomposition of Products
Not known
Appearance: Purple to crimson in color Physical state: Solid. Odor: None. Specific Gravity (water = 1.0): 4.8 Solubility in Water (weight%): Negligible pH: Not applicable. Boiling Point: Decomposes Melting Point: Not applicable Vapor Pressure: None at room temperature Vapor Density (air = 1.0): Not applicable Evaporation Rate: Does not evaporate or sublime % Volatiles: Negligible. Flash Point: Not applicable.
Normally Stable? (Conditions to Avoid)
Normally stable.
Materials to avoid:
Potassium nitrate, hydrogen peroxide
Incompatibilities:
None known other than above.
Hazardous Decomposition Products:
Molybdenum oxide fumes, sulfur dioxide gas and carbon monoxide
Hazardous Polymerization:
Will not occur.
Immediate (Acute) Effects:
Not determined.
Delayed (Subchronic and Chronic) Effects:
None known.
Other Data:
None.
Exotoxicity:
Exotoxicity is expected to be low based on the zero water
solubility of the material. Material is considered inert and
not expected to be biodegradable or toxic.
Bioaccumulation:
Not expected to occur.
RCRA
Is the unused product a RCRA hazardous waste if discarded? No.
Other Disposal Considerations:
Dispose of in compliance with Federal, state and local government
regulations.
The information offered here is for the product as shipped. Use and/or
alterations to the product such as mixing with other materials may
significantly change the characteristics of the material and alter the
RCRA classification and the proper disposal method.
US DOT Hazard Class: Not regulated. US DOT ID Number: Not applicable, none assigned.
Toxic Substances Control Act (TSCA) TSCA Inventory Status: Listed on the TSCA Inventory. Other TSCA Issues: None. SARA TITLE III/CERCLA "Reportable Quantities" (RQs) and/or "Threshold Planning Quantities" (TPQs) exist for the following ingredients. INGREDIENT NAME SARA/CERCLA RQ (lb) SARA EHS TPQ (lb) No ingredients listed in this section. Spills resulting in the loss of any ingredient at or above its RQ requires immediate notification to the National Response Center (1-800-424-8802) and to your Local Emergency Planning Committee. SECTION 311 HAZARD CLASS: None. The following ingredients are SARA 313 "Toxic Chemicals". CAS numbers and weight percents are found in Section 2. INGREDIENT NAME COMMENT No ingredients listed in this section. State Right-To-Know In addition to the ingredients found in Section 2, the following are listed for state right-to-know purposes. INGREDIENT NAME WEIGHT % COMMENT No ingredients listed in this section. WHMIS Classification (CANADA): Not a controlled substance. (Considered to be a manufactured article.) Foreign Inventory Status: The material is listed on the EINECS Inventory. California Prop. 65: Proposition 65 requires manufacturers or distributors of consumer products into the State of California to provide a warning statement if the product contains ingredients for which the State has found to cause cancer, birth defects or other reproductive harm. If this product contains an ingredient listed by the State of California to cause cancer or reproductive toxicity, it will be listed below: None present.
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