Safety Data Sheet. Page: 1 of 7 Version: Revision Date: 12/20/2013 NANOTEK INSTRUMENTS, INC. PRODUCT NAME: GCA-400, GCA-800, GCA-1200, GCA-2000

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1 Page: 1 of 7 1. PRODUCT AND COMPANY IDENTIFICATION Generic Description: Carbon/silicon material MANUFACTURER: Nanotek Instruments, Inc McCook Avenue Dayton, Ohio Inquiries: Fax Number: Telephone Number: (937) (937) HAZARDS IDENTIFICATION GHS Classification: Combustible, Flammable solid, Acute toxicity-oral, Eye irritation Label Elements: Warning: May form combustible dust concentrations in air. Flammable solid 3. COMPOSITION / INFORMATION ON INGREDIENTS CAS Number Wt % Component Name Silicon (amorphous) Carbon/Graphite </=0.78 Water (Moisture) 4. FIRST AID MEASURES Eye: Skin: Inhalation: Ingestion: Flush with large amounts of water, lifting the eyelids to separate them. Do not rub eyes or keep them closed. Seek medical assistance if irritation develops or any other adverse effect is experienced. Immediately wash with soap and water, remove contaminated clothing and wash it before reuse. Seek medical assistance if irritation develops or any other adverse effect is experienced. Remove to fresh air. If breathing is difficult have qualified personnel administer oxygen. Seek medical assistance if irritation develops or any other adverse effect is experienced. Do not induce vomiting. Have victim rinse out mouth with water. In general, no treatment is necessary unless large quantities of product are ingested. However, seek medical advice immediately.

2 Page: 2 of 7 Most Important Symptoms: Indication of Immediate Medical Attention and Special Treatment, if Needed: Mild eye irritation. Inhalation of particulate may cause respiratory irritation. Ingestion of large amounts may cause internal injury. Seek immediate medical advice for inhalation or ingestion exposure. 5. FIRE FIGHTING MEASURES Suitable Extinguishing Media: Specific Hazards Arising from the Chemical: Special Protective Equipment and Precautions for Fire-Fighters: Use water fog, foam, dry chemical, or carbon dioxide. Do not use solid water jet as that may create a dust cloud that can present an explosion hazard. Dust generated in handling this material may present a potential fire and explosion hazard if suspended in air at high concentrations. Settled dust presents a fire hazard. Resuspension of the dust into the air by vibration, traffic, material handling, etc. in high concentrations in the presence of an ignition source could result in a dust explosion. Graphene is electrically conductive and may cause a short circuit in electrical equipment providing an ignition source. Minimize the generation and accumulation of dust Do not enter fire area without full bunker gear, including positive pressure NIOSH self-contained breathing apparatus. Cool fire-exposed containers with water. 6. ACCIDENTAL RELEASE MEASURES Personal Precautions, Protective Equipment And Emergency Procedures Methods and Materials for Containment/ Cleanup: Wear appropriate protective clothing as described in Section 8. Consider the use of respiratory protection if exposure to airborne particles is possible during cleanup. Eliminate all sources of ignition. Collect spilled material in a manner that minimizes the generation of airborne dust. If a vacuum is used, high-efficiency, explosion proof equipment is required. Nonsparking tools should be used. Dust deposits should not be allowed to accumulate on surfaces, as these may form an explosive mixture if they are released into the atmosphere in sufficient concentrations. Avoid dispersal of dust in the air (i.e., clearing dust surfaces with compressed air.). Clean up residuals on surfaces with suitable floor detergent/soap cleaner and properly rinse and dry. This precaution will prevent a slip hazard. Dispose of saturated absorbent or cleaning materials appropriately. Local, state and federal laws and regulations may apply to releases and disposal of this material, as well as those materials and items employed in the cleanup of releases. You will need to determine which federal, state and local laws and regulations are applicable. Sections 13 and 15 of this MSDS provide information regarding certain federal and state requirements. 7. HANDLING AND STORAGE Precautions for Safe Handling: Avoid contact with eyes, skin and clothing. Do not breathe dusts. Wear protective clothing and equipment as described in Section 8. Use only with adequate ventilation. Do not eat, drink or smoke when

3 Page: 3 of 7 using this material. Clean all work areas at the end of each shift as a minimum using either an explosion-proof HEPA vacuum cleaner or wet wiping methods. Workers should shower and change clothes before leaving the worksite at the end of their shift. All contaminated work clothing should be discarded or laundered to remove nanoparticles before reuse. Wash thoroughly with soap and water after handling. Minimize the generation and accumulation of dust. Keep dust away from open flames, hot surfaces and sources of ignition. Follow good housekeeping practices to keep surfaces, including areas overhead such as piping, drop ceilings, ductwork, etc. free from settled dust. Dry powders can build static electricity charges when subjected to friction of transfer and in mixing operations. Carbon powder may cause a short circuit in electrical equipment providing an ignition source for combustible dust deposits. Provide adequate precautions, such as electrical ghrounding and bonding, or inert atmospheres. See NIOSH guidance on safe handling of nanomaterials at Conditions for Safe Storage, including any incompatibilities: Store in closed containers away from sources of ignition and oxidizers. Keep container tightly closed in cool, dry area. Oxygen starved combustion may yield carbon monoxide. 8. EXPOSURE CONTROLS / PERSONAL PROTECTION FOR ROUTINE HANDLING AND/OR SPILLS Occupational Exposure Limits CAS Number Component Name Exposure Limits Carbon/Graphite Silicon (amorphous) TWA: 3.5 (mg/m3) from ACGIH (TLV) [United States] TWA: 4 (mg/m3) [United Kingdom (UK)] Respirable. TWA: 10 (mg/m3) [United Kingdom (UK)] Total. TWA: 2 (mg/m3) [Canada] Respirable. Consult local authorities for acceptable exposure limits. It is recommended that exposure levels be maintained as low as possible. TWA: 15 (mg/m3) from OSHA [United States] Total Dust TWA: 5 (mg/m3) from OSHA [United States] Respirable TWA: 5 (mg/m3) from NIOSH [United States] Respirable. Consult local authorities for acceptable exposure limits. It is recommended that exposure levels be maintained as low as possible.

4 Page: 4 of 7 Engineering Controls: Use only with adequate controls such as source enclosure or local exhaust ventilation to minimize worker exposure. For operations where airborne particulates are possible, in general technologies that are adequate for the control of asbestos fibers (for example: closed systems, enclosures with negative pressure and HEPA filtered exhaust, wet methods in conjunction local exhaust ventilation) should be effective in the control of engineered nanoparticles. It is recommended that all dust control equipment such as local exhaust ventilation and material transport systems involved in handling this product contain explosion relief vents or an explosion suppression system or an oxygen deficient environment. Ensure that dust handling systems (such as exhaust ducts, dust collectors, vessels and processing equipment) are designed in a manner to prevent the escape of dust into the work area (i.e. there is no leakage from the equipment). See NIOSH guidance on safe handling of nanomaterials at Respiratory Protection: If needed, an approved respirator with high efficiency particulate filters may be used. For high exposures, a supplied air respirator may be required. Respirator selection and use should be based on contaminant type, form and concentration. Follow applicable regulations and good Industrial Hygiene practice. Eye Protection: Skin Protection: Use proper protection safety glasses as a minimum Impervious gloves such as rubber are recommended 9. PHYSICAL AND CHEMICAL PROPERTIES Form: Solid Appearance: Powder Color: Greyish-Black Surface Area (BET N 2 ) Not determined Evaporation Rate: Not applicable Odor Threshold: Not determined ph: Not applicable Boiling Point/Range: Not applicable Flash Point: None Vapor Pressure: Not applicable Lower Explosion Limit: Not determined Vapor Density: Not applicable Upper Explosion Limit: Not determined Relative Density: g/cm3 Autoignition Temperature: Not determined Solubility in Water: Insoluble Decomposition Not determined Melting/Freezing Point: Not applicable Temperature: Partition Coefficient: Not determined Viscosity: Not applicable Note: The above information is not intended for use in preparing product specifications 10. STABILITY AND REACTIVITY Reactivity: Chemical Stability: Possibility of Hazardous Reactions: Conditions to Avoid: Not reactive under normal conditions Stable. Reaction with oxidizers may generate heat and may cause fire. Avoid heat, sparks, flames and all other sources of ignition.

5 Page: 5 of 7 Incompatible Materials: Hazardous Decomposition Products: Keep away from strong oxidizers, alkali carbonates, calcium, cobalt difluoride, manganese trifluoride Oxides of carbon, silicon 11. TOXICOLOGICAL INFORMATION Health Effects of Exposure: The toxicity of this product has not been fully investigated. All exposure to this product by inhalation or skin contact should be minimized. Ingestion: Not likely to be a relevant route of exposure, however, repeated ingestion or swallowing large amounts may cause internal injury. Inhalation: Inhalation of dust may cause irritation of the nose, throat and upper respiratory tract. Eye: May cause mild irritation. Skin: No specific effects are known. Chronic Effects of Exposure: The chronic effects of exposure to this product are not known at this time. There have been cases of lung disease, pneumoconiosis associate with exposure to graphite. If these particulates are inhaled and deposited deep in the lung tissue, they may cause a chronic inflammatory response or interfere with normal function. Carcinogenicity: High surface area carbon powder is not listed as a carcinogen or suspected carcinogen by IARC, ACGIH, NTP or OSHA. Reproductive Toxicity: No specific data are available. No adverse effects are expected. Germ Cell Mutagenicity: No specific data are available. No adverse effects are expected. Numerical Measures of Toxicity: No data available 12. Ecological Information Ecotoxicity: No data is currently available. Persistency and Degradability: Components are expected to be biodegradable. Bioaccumulative Potential: No data is currently available. Mobility in soil: No data is currently available. Other Adverse effects: None known. Ecotoxicity: No data is currently available. 13. DISPOSAL CONSIDERATIONS RCRA Hazard Class (40 CFR 261) This product is not specifically listed as hazardous waste under RCRA (40 CFR 261). Characteristic Waste: Ignitable: Flammable Corrosive: N/A Reactive: N/A State or local laws may impose additional regulatory requirements regarding disposal. 14. TRANSPORT INFORMATION

6 Page: 6 of 7 DOT Road Shipment Information (49 CFR ) UN number: 1346 Class: 4.1 Packing group: III Proper shipping name: Silicon powder, amorphous Marine pollutant: No Poison Inhalation Hazard: No Ocean Shipment (IMDG) UN number: 1346 Class: 4.1 Packing group: III EMS-No: F-A, S-G Proper shipping name: SILICON POWDER, AMORPHOUS Marine pollutant: No Air Shipment (IATA) UN number: 1346 Class: 4.1 Packing group: III Proper shipping name: Silicon powder, amorphous 15. REGULATORY INFORMATION Contents of this MSDS comply with the OSHA Hazard Communication Standard 29 CFR All chemical substances in this material are included, listed and conforms to the following inventory status: Canada-DSL Japan-MITI and ENCS European Union-EINECS Australia-AICS Korea-KECI Philippines-PICCS China-IECSC New Zealand-NZIOC TSCA Status: All chemical substances in this material are included on or exempted from listing on the TSCA Inventory of Chemical Substances. EPA SARA Title III Chemical Listings Additionally, this product does not contain any chemical(s) that are subject to Section 12(b) export notification. Section 302 Extremely Hazardous Substances (40 CFR 355): None Section 304 CERCLA Hazardous Substances (40 CFR 302): None Section 311/312 Hazard Class (40 CFR 370): Fire: Fire Hazard Section 313 Toxic Chemicals (40 CFR 372): None Note: Chemicals are listed under the 313 Toxic Chemicals section only if they meet or exceed a reporting threshold.

7 Page: 7 of 7 Supplemental State Compliance Massachusetts Right To Know Components Silicon CAS-No Revision Date Pennsylvania Right To Know Components Silicon CAS-No Revision Date New Jersey Right To Know Components Silicon CAS-No Revision Date This product contains no known components to cause cancer or birth defect or other reproductive harm in accordance with the State of California under the Safe Drinking Water and Toxic Act of 1986 (Proposition 65). 16. OTHER INFORMATION SDS Date of Preparation: December 19, 2013 Prepared by: Nanotek Instruments, Inc. The data offered above, is in good faith, as typical values and not as product specifications. No warranty, either expressed or implied, is hereby made. The recommended industrial hygiene and safe handling procedures are believed to be generally applicable. However, each user should review these recommendations in the specific context of the intended use and determine whether they are appropriate.