MED20-2955 PART A

SECTION 2: Hazards identification

EFFECTS OF SINGLE OVEREXPOSURE: SWALLOWING: Small amounts transferred to the mouth by fingers during use, etc., should not injure. Swallowing large amounts may cause digestive discomfort. SKIN ABSORPTION: No evidence of adverse effects from available information. INHALATION: Short-term harmful health effects are not expected from vapor generated at ambient temperature. SKIN CONTACT: A single relatively short exposure causes no known adverse effects. Several repeated prolonged exposures (24 to 48 hours) may irritate. EYE CONTACT: Direct contact may cause temporary discomfort with mild redness, dryness, and irritation. EFFECTS OF REPEATED OVEREXPOSURE: No injury from boron nitride dust should occur during reasonable use. If use creates respirable particles, some respiratory system injury may occur. However, since the boron nitride in this product is compounded into the polymer matrix, it is not expected to present the same hazards as in the neat form.

Medical Conditions Generally Aggravated by Exposure

OVEREXPOSURE A knowledge of the available toxicology information and of the physical and chemical properties of the material suggests that overexposure is unlikely to aggravate existing medical conditions. SIGNIFICANT LABORATORY DATA WITH POSSIBLE RELEVANCE TO HUMAN HEALTH HAZARD EVALUATION: None currently known. OTHER EFFECTS OF OVEREXPOSURE: None currently known. 4. FIRST AID MEASURES EMERGENCY AND FIRST AID MEASURES: SWALLOWING: No emergency care anticipated SKIN: Wash with soap and water. INHALATION: No emergency care anticipated EYES: Immediately flush eyes with water for at least 15 minutes. Obtain medical attention if discomfort persists. NOTES TO PHYSICIAN: There is no specific antidote. Treatment of overexposure should be directed at the control of symptoms and the clinical condition of the patient. NOTE: Do not induce vomiting. Emesis of this material may prove difficult due to its high viscosity. Aspiration may cause lung damage. 5. FIRE FIGHTING MEASURES FLASH POINT (test method(s)): > 275° C Estimated FLAMMABLE LIMITS IN AIR (by volume): LOWER: N/A UPPER: N/A EXTINGUISHING MEDIA: Apply alcohol-type or universal-type foams by manufacturer's recommended technique for large fires. Use water spray, carbon dioxide, dry chemical media for small fires. SPECIAL FIRE FIGHTING PROCEDURES: Do not spray a solid stream of water or foam directly into a pool of hot, burning liquid as this may cause frothing, and may intensify the fire. Use self-contained breathing apparatus when fighting fire in an enclosed area. UNUSUAL FIRE AND EXPLOSION HAZARDS: This product contains polydimethylsiloxane which can generate formaldehyde as a byproduct of oxidative thermal decomposition at temperatures greater than 150°C (300°F). See Section 10 for further information. 6. ACCIDENTAL RELEASE MEASURES STEPS TO BE TAKEN IF MATERIAL IS RELEASED OR SPILLED: Spills should be contained with mechanical barriers. Transfer spilled material to a suitable container for disposal. WASTE DISPOSAL METHOD: Dispose of in accordance with all Federal, State, and local regulations. 7. HANDLING AND STORAGE PRECAUTIONS TO BE TAKEN IN HANDLING AND STORAGE: Normal precautions common to safe manufacturing practice should be followed in handling and storage. Keep container closed, in a cool dry place. S3/S7/S8 Any proposed use of this product in elevated-temperature processes should be thoroughly evaluated to assure that safe operating conditions are established and maintained. 8. EXPOSURE CONTROLS / PERSONAL PROTECTION OCCUPATIONAL EXPOSURE VALUES AND SOURCE: Boron Nitride, as dust (all grades): 5 mg/m3 - 8 hours TWA (ACGIH) RESPIRATORY PROTECTION: None should be required for normal use. VENTILATION: General (mechanical) room ventilation is expected to be satisfactory for normal handling. PROTECTIVE GLOVES: Vinyl or nitrile gloves. EYE PROTECTION: Use safety glasses. OTHER PROTECTIVE EQUIPMENT: Eye bath and safety shower. 9. PHYSICAL AND CHEMICAL PROPERTIES (based on typical material) BOILING POINT, 760 mm Hg: N/A SPECIFIC GRAVITY (H2O=1): 1.27 FREEZING POINT: N/A VAPOR PRESSURE @ 20°C: N/A VAPOR DENSITY (air = 1): N/A EVAPORATION RATE (Butyl Acetate = 1): N/A SOLUBILITY IN WATER (By wt): Insoluble APPEARANCE: White ODOR: Odorless PHYSICAL STATE: Liquid PERCENT VOLATILES (by wt): See Section 15 Note: The above information is not intended for use in preparing product specifications. 10. STABILITY AND REACTIVITY DATA STABILITY: Stable. CONDITIONS TO AVOID: None. INCOMPATIBILITY: Oxidizing materials can cause a reaction. HAZARDOUS COMBUSTION OR DECOMPOSITION PRODUCTS: Burning can produce carbon monoxide, carbon dioxide, oxides of silicon, and hydrocarbons. Carbon monoxide is highly toxic if inhaled; carbon dioxide in sufficient concentrations can act as an asphyxiant. Acute overexposure to the products of combustion may result in irritation of the respiratory tract. Traces of formaldehyde may be generated due to oxidative thermal decomposition at temperatures greater than 150°C (300°F). Exposure to formaldehyde can cause adverse effects such as skin and respiratory sensitization and eye and throat irritation. Formaldehyde is a potential carcinogen. Evaluate and control exposure to formaldehyde when warranted by conditions of use. HAZARDOUS POLYMERIZATION: Will not occur.

TOXICOLOGICAL INFORMATION

COMPONENT: Acute Oral LD50 (mg/kg): 500-5000 (Rat) Inferred from ingredient hazard(s) Acute Dermal LD50 (mg/kg): 1000-2000 (Rbt.) Inferred from ingredient hazard(s) Acute Inhalation LC50 (mg/l): 2-20 (Rat) Inferred from ingredient hazard(s) Other: N/A. Ames Test: N/A. Refer to Section 3 for further discussion of the health hazards associated with this preparation. Complete information not yet available. CHEMICAL FATE INFORMATION: Complete information not yet available. 13. DISPOSAL CONSIDERATIONS Dispose of in accordance with all Federal, State, and local regulations. 14. TRANSPORT INFORMATION DOT HAZARD CLASSIFICATION: None (Not Regulated) I.A.T.A. HAZARD CLASSIFICATION: None (Not Regulated) 15. REGULATORY INFORMATION STATUS ON SUBSTANCE LISTS: The concentrations shown are maximum or ceiling levels (weight %) to be used for calculations for regulations. Trade Secrets are indicated by "TS". C.H.I.P. REGULATIONS Chemicals (Hazards Information and Packaging) Regulations 2009 requires physico-chemical and health hazard determination of all substances and preparations manufactured, transported, stored, modified, or consumed within the U.K. Components present in this product at a level which could require reporting under the statute are: **** NONE **** ____________________________________________________________________________________________ FEDERAL EPA Comprehensive Environmental Response Compensation and Liability Act of 1980 (CERCLA) requires notification of the National Response Center of release of quantities of Hazardous Substances equal to or greater than the reportable quantities (RQ's) in 40 CFR 302.4. Components present in this product at a level which could require reporting under the statute are: **** NONE **** ____________________________________________________________________________________________ Superfund Amendments and Reauthorization Act of 1986 (SARA) Title III requires emergency planning based on Threshold Planning Quantities (TPQ's) and release reporting based on Reportable Quantities (RQ's) in 40 CFR 355 (used for SARA 302, 304, 311, and 312). Components present in this product at a level which could require reporting under the statute are: **** NONE **** ____________________________________________________________________________________________ Superfund Amendments and Reauthorization Act of 1986 (SARA) Title III requires submission of annual reports of release of toxic chemicals that appear in 40 CFR 372 (for SARA 313). This information must be included in all MSDS's that are copied and distributed for this material. Components present in this product at a level which could require reporting under this statute are: **** NONE **** ____________________________________________________________________________________________ INVENTORY STATUS The ingredients of this product are listed on, or are exempt from listing on, the TSCA inventory. ____________________________________________________________________________________________ STATE-RIGHT-TO-KNOW CALIFORNIA Proposition 65 This product contains no levels of listed substances, which the State of California has found to cause cancer, birth defects or other reproductive harm, which would require a warning under the statute. ____________________________________________________________________________________________ MASSACHUSETTS 105 CMR 670.000 Right-To-Know, Substance List (MSL)

Hazardous Ingredients

and Extraordinarily Hazardous Substances on the MSL must be identified when present in products. Components present in this product at a level which could require reporting under the statute are: **** NONE **** ____________________________________________________________________________________________ PENNSYLVANIA Right-To-Know, Hazardous Substance List and Special Hazardous Substances on the List must be identified when present in products Components present in this product at a level which could require reporting under the statute are: **** NONE **** ____________________________________________________________________________________________ CALIFORNIA SCAQMD RULE 443.1 VOC'S: Volatile Organic Components (VOC's) = Substances with vapor pressure of ≥ 0.5 mm Hg at 104°C (219.2°F). This product contains < 1 % by weight VOC's. ____________________________________________________________________________________________ OTHER REGULATORY INFORMATION: EPA Hazard Categories: None. C.H.I.P. Regulations: Designation: % MATERIAL CAS # EXPOSURE VALUE

Hazard pictograms

N/A

Hazard statements

N/A

Precautionary statements

S3/S7/S8 (Ref. Sect. 7)

Further information

HMIS FORMAT: Health: 1 Flammability: 1 Reactivity: 0 We believe that the information contained herein is current as of the date of this Material Safety Data Sheet, and is offered in good faith. Since the use of this information and of these opinions and the conditions of the use of the product are not within the control of NuSil Technology LLC, it is the user's obligation to determine the conditions of safe use of the product. -NuSil Technology LLC Regulatory Compliance Department Effective Date February 16, 2012 1. CHEMICAL PRODUCT AND COMPANY IDENTIFICATION NuSil Technology LLC EMERGENCY TELEPHONE NUMBERS: (800) 424-9300 CHEMTREC 1050 Cindy Lane (805) 684-8780 Carpinteria, California 93013 USA OUTSIDE OF THE USA (703) 527-3887 CHEMTREC (805) 684-8780 PRODUCT NAME: MED20-2955 PART B CHEMICAL NAME: N/A CHEMICAL FAMILY: Silicone FORMULA: Proprietary MOLECULAR WEIGHT: N/A SYNONYMS: N/A CAS #: Mixture

2.1 Classification of the substance or mixture

16-26 Resin Crosslinker 68988-57-8 Not Established See Section 7 3. HAZARDS IDENTIFICATION EFFECTS OF SINGLE OVEREXPOSURE: SWALLOWING: May cause irritation of the mouth, throat, esophagus and stomach, with headache, nausea, narcosis and unconsciousness. SKIN ABSORPTION: May be mildly irritating to the skin. INHALATION: No information available. Avoid inhalation. SKIN CONTACT: No information available. Avoid contact. EYE CONTACT: May cause immediate or delayed severe eye irritation. EFFECTS OF REPEATED OVEREXPOSURE: This product, as with any chemical, may enhance allergic reactions in certain people. We do not know of any medical conditions that might be aggravated by exposure to this product, but unnecessary exposure to any chemical should be avoided. MEDICAL CONDITIONS AGGRAVATED BY OVEREXPOSURE: No information available. SIGNIFICANT LABORATORY DATA WITH POSSIBLE RELEVANCE TO HUMAN HEALTH HAZARD EVALUATION: No information available. OTHER EFFECTS OF OVEREXPOSURE: May causes irritation. May be fatal if swallowed or inhaled. Wash thoroughly after handling.