Castable Photoreactive Resin for Form 1, Form 1+ MATERIAL SAFETY DATA SHEET Prepared: 09/25/2014 GHS-Labelling Hazard pictograms: Signal word: Warning

1. Chemical Product and Company Identification Product Identification: Photoreactive Resin Product Class: Mixture of methacrylated oligomers, methacrylated monomer, and photoinitiator Product Use: For use in Formlabs printer Form 1, Form 1+ Company: Formlabs, Inc. 35 Medford Street, Suite #1 Somerville, MA Date of Preparation: 09/25/2014 For Emergencies: Call +1 617 932 5227 2. Hazards Identification EMERGENCY OVERVIEW COLOR: BLUE PHYSICAL STATE: LIQUID ODOR: SLIGHTLY ACRYLIC / CHARACTERISTIC * lassification of the substance or mixture: C Skin irritation, Category 3 Eye irritation, Category 2B...

Remove contact lenses, if present and easy to do. Continue rinsing. P310: IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician. P333 + P313: If skin irritation or rash occurs: Get medical advice/attention. P362: Take off contaminated clothing and wash before reuse. P391: Collect spillage. SUPPLEMENTAL HEALTH INFORMATION Potential Health Effects: Effects due to processing releases: Irritating to eyes, respiratory system and skin. Prolonged or repeated exposure may cause: headache, drowsiness, nausea and/ or weakness (severity of effects depends on extent of exposure). Other: This...

Upper Explosion Limit: no data Extinguishing Media: Use carbon dioxide or dry chemical for small fires; aqueous foam or water spray for large fires. Special Firefighting Procedures: Firefighters should wear full protective clothing and self-contained breathing apparatus (SCBA). Thoroughly decontaminate firefighting equipment including all firefighting apparel after the incident. Unusual Fire & Explosion: Emits irritating vapors. High temperatures, accidental impurities, or exposure to radiation or oxidizers may cause spontaneous polymerization generating heat/pressure and rupture/explosion of...

NOTATIONS IOELVs — Indicative Occupational Exposure Limit Values TWA — Time Weighted Average OEL — Occupational Exposure Limits PEL — Permissible Exposure Limit TLV — Threshold Limit Value STEL — Short Term Exposure Limit WEEL — Workplace Environmental Exposure Level by the American Industrial Hygiene Association EXPOSURE CONTROLS Ventilation Controls: Ensure adequate ventilation. Respiratory Protection: Respirators are generally not needed under normal conditions of use. If this material is handled at elevated temperature, under mist-forming conditions or in case of accidental release of large...

10. Stability and Reactivity Stability: Material is stable when stored, in its original container (designed for use with light sensitive materials) and under 35 °C (95 °F) in a dark, cool place. Conditions to Avoid: Storage temperatures > 100 °F Exposure to light Loss of dissolved air Contamination with incompatible materials Incompatible Materials to Avoid: Polymerization initiators, including peroxides, strong oxidizing agents, alcohols, copper, copper alloys, carbon steel, iron, rust, and strong bases. Hazardous Decomposition Products: Hazardous decomposition products may include oxides of...

14. Transport Information Department of Transportation Classification: Not hazardous by D.O.T. regulations. D.O.T. Proper Shipping Name: Not regulated International Maritime Dangerous Goods Code (IMDG): Not regulated International Air Transportation Association (IATA): Not regulated Other Requirements: N/A Australian HazChem Code: N/A 15. Regulatory Information The following provides a summary of the legal requirements. EUROPEAN ECONOMIC COMMUNITY (EEC) Ingredient European Community Standards CANADA REGS Listed as dangerous chemicals per ESIS All the components present in this product at concentrations...

SARA 302: No chemicals in this material are subject to the reporting requirements of SARA Title III, Section 302. Pursuant to Title III of the Superfund Amendments and Reauthorization Act of 1986, (SARA) and 40 CFR 372 Part 372, this product does not contain chemicals subject to the reporting requirements under Section 313. California Proposition 65: This product does not contain chemicals which are known to the state of California to cause cancer. 16. Other Information HMIS (Hazardous Materials Information System) for secondary labeling: HEALTH FIRE HAZARD PERSONAL PROTECTIVE EQUIPMENT REFERENCES:...