Molybdenum Disulphide (MoS2) Powder

Molybdenum Disulphide (MoS2) Powder

Product Description

Molybdenum Disulphide is dry/solid lubricant powder, also known as molybdenite (principal ore from which molybdenum metal is extracted), and has the chemical formula MoS2. It is insoluble in water and dilute acids. Its crystal structure is hexagonal lamellar, which is similar to graphite, boron nitride and tungsten disulphide.

It also has excellent film forming properties and is an excellent lubricant in moisture free environments below 400° C. MoS2 offers excellent lubricity properties in inert atmospheres and under high vacuum where other conventional lubricants fail.

MoS2 also offers extreme pressure lubricant properties. MoS2 is able to withstand up to 250,000 psi, which makes it extremely effective when used in applications such as cold metal forming.

Use in Additives

MoS2 is widely used as dry lubricant additive in Grease, Oils, Polymers, Paints and other coatings.

MoS2 is available in particle sizes: 90 nm, 1.5 micron, 4.5 micron and 12.5 micron. Larger sizes are possible as custom orders. Standard packing: 1 lb. plastic bag, 10 lbs. plastic bag and 25 Kg (55 lbs.) in a small drum.

New and future applications of MoS2

Since the discovery of single-layer graphene in 2004, the field of 2D materials has seen several new classes of materials emerge. One of these is transition metal dichalcogenides (TMDs). These materials are comprised of one of the transition metals bound with one of the elements in Group 16. However, oxides are typically not classed as dichalcogenides.

Molybdenum Disulphide (MoS2) is currently the most studied member of the TMD family. MoS2 is similar to graphite but when it transitions from a bulk to a single-layer structure, the properties of this material undergo a significant change. The layers of the TMD can be exfoliated, mechanically or chemically, to form nano-sheets.

The most striking change that occurs when transitioning from bulk to single layer is the shift in the optoelectronic properties, with the material changing from being an indirect bandgap semiconductor with a bandgap value of approximately 1.3 eV to a direct bandgap semiconductor with a bandgap value of approximately 1.9 eV. Due to the presence of a bandgap in this material, there are significantly more uses for MoS2 in comparison to other 2d materials such as graphene.

Some areas in which MoS2 has already been applied include high on/off ratio field effect transistors due to low leakage currents, mem-resistors based on layered TMD films, controllable spin and valley polarization, geometric confinement of excitons, tuneable photoluminescence, the electrolysis of water, and photovoltaics/photodetectors.

Property Name Molybdenum Disulfide (MoS2)
(CAS No 1317-33-5)
Colour Blue-Silver Grey
Appearance Crystalline Solid
Melting Point 1185ºC (decomposes)
Density 5060 Kg.m3
Molecular Weight 160.08
Coefficient of Friction (CoF) See below
Thermal Stability in Air CoF < 0.1 316ºC increases to 0.5 @ 594ºC
Thermal Stability in Argon COF increases rapidly starting @ 426ºC)
COF >0.1 @ 482ºC
Load bearing ability Ambient: from -185ºC to 350ºC
Vacuum: from -185ºC to 1100ºC
Chemical Durability Inert Substance, Non-Toxic
Magnetism Non-Magnetic
Corrosion Stability
Coatable Substrates Iron, Steel, Aluminum, Copper, other Metals, Plastics and Manmade Solids
Compatibility Oil, Solvent, Paint, Fuel
Electronic / optoelectronic properties HOMO / LUMO:
HOMO = -6.39 eV; LUMO = -4.50 eV
Bandgap: Eg = 1.89 eV
Classification / Family: 2D semiconducting materials, monolayer materials, thin-layered transition-metal dichalcogenides (TMDs), n-type semiconductors
Particle Sizes 90 nm, 1.5 micron, 4.5 micron and 12.5 micron. Larger sizes are possible as custom orders.
Standard Packaging 1 lb. plastic bag, 10 lbs. plastic bag and 25 Kg (55 lbs.) in small drum.
Molybedum Disulphate (Molybedum Disulfate) Powder
Material Safety Datasheet Revision 1.0
Molybdenum (IV) Sulphide Powder
Product name: Molybdenum (IV) Sulphide Powder (MoS2)

Revision 1.0: 2018/08/23

Important: Although Garage Lube (Pty) Ltd has attempted to provide current and accurate information herein, the information is based on information provided by the manufacturer. Garage Lube (Pty) Ltd makes no representations regarding the accuracy or completeness of information and assumes no liability for any loss, damage, or injury of any kind which may result from, or arise out of, the use of or reliance on the information by any person.

1. Substance / Preparation and Company Identification

Product Names: Molybdenum (IV) Sulphide Powder (MoS2), Molybdenum (IV) Sulfide Powder (MoS2), Molybdenum Disulphide, Molybdenum Disulfide

Imported By: Garage Lube (Pty) Ltd

Postnet Suite 038
Private Bag X6011
South Africa

Phone: +27 (72) 501-0016

Fax: +27 (86) 531-1212

Contact Person: Jeff Frandsen


Email Address:

2. Emergency Overview

WHMIS Classification: Not WHMIS controlled.

GHS Classification : Acute toxicity, Inhalation (Category 4)

3. GHS Label elements, including precautionary statements

Pictogram: See image on right

Signal word : Warning

Hazard statement(s) :
H332: Harmful if inhaled.
Precautionary statement(s): None

4. HMIS Classification

Health hazard: 1

Flammability: 0

Physical hazards : 0

5. Potential Health Effects

Inhalation: Toxic if inhaled. May cause respiratory tract irritation.

Skin: May be harmful if absorbed through skin. May cause skin irritation.

Eyes: May cause eye irritation.

Ingestion: May be harmful if swallowed.

6. Composition

Substance Name : Molybdenum(IV) Sulphide Powder

Formula: MoS2

Molecular Weight : 160.07 g/mol

CAS Number : 1317-33-5

EC No : 1317-33-5 215-263-9

Index No : -

Concentration: -

7. First Aid Measures

General Advice: Consult a physician. Show this safety data sheet to the doctor in attendance. Move out of dangerous area.

Inhalation Exposure: If breathed in, move person into fresh air. If not breathing, give artificial respiration. Consult a physician

Oral Exposure: Never give anything by mouth to an unconscious person. Rinse mouth with water. Consult a physician.

Dermal Exposure: Wash off with soap and plenty of water. Consult a physician.

8. Fire Fighting Measures

Conditions of flammability : Not flammable or combustible.

Suitable extinguishing media : Use water spray, alcohol-resistant foam, dry chemical or carbon dioxide.

Special protective equipment for fire-fighters : Wear self-contained breathing apparatus for fire-fighting if necessary.

Hazardous combustion products : Hazardous decomposition products formed under fire conditions. - Sulphur oxides, Molybdenum oxides

Explosion data - sensitivity to mechanical impact : No data available.

Explosion data – sensitivity to Static Discharge : No data available.

8. Accidental Release Measures

Personal procedures and Precautions : Use personal protective equipment. Avoid dust formation. Avoid breathing vapours, mist or gas. Ensure adequate ventilation. Avoid breathing dust.

Environmental precautions : Do not let product enter drains.

Methods and materials for containment and cleaning up: Pick up and arrange disposal without creating dust. Sweep up and shovel. Keep in suitable, closed containers for disposal.

9. Handling and Storage

Precautions for safe handling : Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Provide appropriate exhaust ventilation at places where dust is formed. Normal measures for preventive fire protection.

Conditions for safe storage : Keep container tightly closed in a dry and well-ventilated place. Keep in a dry place.

10. Exposure Controls / Personal Protection
Components with workplace control parameters
Components CAS No Value Control Parameters Basis
1317-33-5 TWA 10 mg/m3 Canada. Alberta, Occupational Health and Safety Code (table 2: OEL)
1317-33-5 TWA 10 mg/m3 Canada. Quebec OELs
1317-33-5 TWAEV 10 mg/m3 Canada. Quebec OELs
1317-33-5 TWAEV 3 mg/m3 Canada. Quebec OELs
1317-33-5 TWA 3 mg/m3 Canada. British Columbia OEL
1317-33-5 TWA 10 mg/m3 Canada. British Columbia OEL
1317-33-5 TWA 3 mg/m3 USA. ACGIH Threshold Limit Values (TLV)

Components with workplace control parameters

Respiratory protection: For nuisance exposures use type P95 (US) or type P1 (EU EN 143) particle respirator. For higher level protection use type OV/AG/P99 (US) or type ABEK-P2 (EU EN 143) respirator cartridges. Use respirators and components tested and approved under appropriate government standards such as NIOSH (US) or CEN (EU).

Hand protection : Handle with gloves. Gloves must be inspected prior to use. Use proper glove removal technique (without touching glove's outer surface) to avoid skin contact with this product. Dispose of contaminated gloves after use in accordance with applicable laws and good laboratory practices. Wash and dry hands.

Eye protection : Safety glasses with side-shields conforming to EN166 Use equipment for eye protection tested and approved under appropriate government standards such as NIOSH (US) or EN 166(EU).

Skin and body protection : Complete suit protecting against chemicals, The type of protective equipment must be selected according to the concentration and amount of the dangerous substance at the specific workplace.

Hygiene measures : Handle in accordance with good industrial hygiene and safety practice. Wash hands before breaks and at the end of workday.

Specific engineering controls : Use mechanical exhaust or laboratory fume hood to avoid exposure.

11. Physical/Chemical Properties
Propery Value
Appearance Colour Grey
Form Powder
Molecular Weight 24.82 AMU
pH N/A
BP/BP Range N/A
MP/MP Range N/A
Freezing Point 2,375°C
Vapour Pressure N/A
Vapour Density N/A
Saturated Vapour Conc. N/A
SG / Density 5.06 g/cm3 at 25 °C
Bulk Density N/A
Odour Threshold N/A
Volatile % N/A
VOC Content N/A
Water Content N/A
Solvent Content N/A
Evaporation Rate N/A
Viscosity N/A
Surface Tension N/A
Partition Coefficient N/A
Decomposition Temp. N/A
Flash Point N/A
Explosion Limits N/A
Flammability N/A
Auto-ignition Temp N/A
Refractive Index N/A
Optical Rotation N/A
Miscellaneous Data N/A
Solubility N/A
N/A = not available or not applicable
12. Stability and Reactivity

Chemical stability : Stable under recommended storage conditions.

Possibility of hazardous reactions : No data available

Conditions to avoid: No data available

Materials to avoid: Hydrogen peroxide, Strong, oxidizing agents

Hazardous decomposition products : Hazardous decomposition products formed under fire conditions. - Sulphur oxides, Molybdenum oxides

Other decomposition products: No data available

Ecological Information : No data available.

13. Toxicological Information
Acute toxicity Oral LD50

Inhalation LC50 : LC50 Inhalation - rat - 4 h - > 2,820 mg/m3
Remarks: Lungs, Thorax, or Respiration:Other changes.

Dermal LD50 : no data available

Other information on acute toxicity : no data available

Skin corrosion/irritation

Serious eye damage/eye irritation :

Serious eye damage/eye irritation : no data available

Respiratory or skin sensitization : no data available

Germ cell mutagenicity : no data available

Carcinogenicity: IARC: No component of this product present at levels greater than or equal to 0.1% is identified as probable, possible or confirmed human carcinogen by IARC.
ACGIH: No component of this product present at levels greater than or equal to 0.1% is identified as a carcinogen or potential carcinogen by ACGIH.

Reproductive toxicity: No data available

Teratogenicity : No data available

Specific target organ toxicity - single exposure (Globally Harmonized System) : No data available

Specific target organ toxicity - repeated exposure (Globally Harmonized System) : No data available

Aspiration hazard : No data available

14. Disposal Considerations

Product: Offer surplus and non-recyclable solutions to a licensed disposal company. Contact a licensed professional waste disposal service to dispose of this material.

Contaminated packaging: Dispose of as unused product.

15. Trasnsport Information

DOT (US) : Not dangerous goods

IMDG: Not dangerous goods

IATA : Not dangerous goods

: Not dangerous goods

: Not dangerous goods

16. Regularatory Information

DSL Status : All components of this product are on the Canadian DSL list.

WHMIS Classification: Not WHMIS controlled
This product has been classified in accordance with the hazard criteria of the Controlled Products Regulations and the MSDS contains all the information required by the Controlled Products Regulations.

Disclaimer of Expressed and implied Warranties:

The information presented in this Safety Data Sheet is based on data believed to be accurate as of the date this Safety Data Sheet was prepared. HOWEVER, NO WARRANTY OF MERCHANTABILITY, FITNESS FOR ANY PARTICULAR PURPOSE, OR ANY OTHER WARRANTY IS EXPRESSED OR IS TO BE IMPLIED REGARDING THE ACCURACY OR COMPLETENESS OF THE INFORMATION PROVIDED ABOVE, THE RESULTS TO BE OBTAINED REOM THE USE OF THIS INFORMATION OR THE PRODUCT, THE SAFETY OF THIS PROCUCT, OR THE HAZARDS RELATED TO ITS USE. No responsibility is assumed for any damage of injury resulting from abnormal use or from any failure to recommended practices. The information provided above, and the product, are furnished on the condition that the person receiving them shall make their own determination as to the suitability of the product for their particular purpose and on the condition that they assume the risk of their use. In addition, no authorization is given nor implied to practice any patented invention without a license.