SAFETY DATA SHEET Catalase Potassium Hydroxide. Section 2. Hazards Identification

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1 Page: Product Code: Product Name: according to Regulation (EC) No. 1907/2006 as amended by (EC) No. 1272/2008 Section 1. Identification of the Substance/Mixture and of the Company/Undertaking Relevant identified uses: Relevant identified uses of the substance or mixture and uses advised against: For research use only, not for human or veterinary use. 1.3 Details of the Supplier of the Safety Data Sheet: Company Name: Cayman Chemical Company 1180 E. Ellsworth Rd. Ann Arbor, MI Web site address: Information: Cayman Chemical Company +1 (734) Emergency telephone number: Emergency Contact: CHEMTREC Within USA and Canada: +1 (800) CHEMTREC Outside USA and Canada: +1 (703) Section 2. Hazards Identification 2.1 Classification of the Substance or Mixture: Classification according to Regulation (EC) No 1272/2008 [CLP]: Acute Toxicity: Oral, Category 3 Skin Corrosion/Irritation, Category 1A Classification according to Directive 1999/45/EC: C: Corrosive Xi: Irritant Risk Phrases: R22, R35 For full text of R- phrases: see SECTION Label Elements: Labeling according to Regulation (EC) No 1272/2008 [CLP]: GHS Signal Word: Danger GHS Hazard Phrases: H301: Toxic if swallowed. H314: Causes severe skin burns and eye damage. GHS Precaution Phrases: P264: Wash {hands} thoroughly after handling. P260: Do not breathe {dust/fume/gas/mist/vapours/spray}. P280: Wear {protective gloves/protective clothing/eye protection/face protection}. GHS Response Phrases: P : IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician. P330: Rinse mouth. P : IF ON SKIN (or hair): Remove/take off immediately all contaminated clothing. Rinse skin with water/shower. P363: Wash contaminated clothing before reuse. P : IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. P : IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. P : IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing.

2 P310: Immediately call a {POISON CENTER/doctor/...}. GHS Storage and Disposal Phrases: Please refer to Section 7 for Storage and Section 13 for Disposal information Labeling according to Directive 1999/45/EC: Page: 2 C Xi 2.3 Adverse Human Health Causes severe skin burns and eye damage. Effects and Symptoms: Harmful if inhaled or absorbed through the skin. Material is extremely destructive to the tissue of the mucous membranes and upper respiratory tract, eyes, and skin. Toxic if swallowed. To the best of our knowledge, the toxicological properties have not been thoroughly investigated. Section 3. Composition/Information on Ingredients CAS # / RTECS # TT ZC Hazardous Components (Chemical Name)/ REACH Registration No. Concentration EC No./ EC Index No. Potassium hydroxide 56.1 % Water 43.9 % NA Risk Phrases/ GHS Classification C;Xi; R22-35 Acute Tox.(O) 4: H302 Skin Corr. 1A: H314 No phrases apply Description of First Aid Measures: In Case of Inhalation: In Case of Skin Contact: In Case of Eye Contact: In Case of Ingestion: Important Symptoms and Effects, Both Acute and Delayed: Section 4. First Aid Measures Remove to fresh air. If not breathing, give artificial respiration or give oxygen by trained personnel. Get immediate medical attention. Immediately wash skin with soap and plenty of water for at least 15 minutes. Remove contaminated clothing. Get medical attention if symptoms occur. Wash clothing before reuse. Hold eyelids apart and flush eyes with plenty of water for at least 15 minutes. Have eyes examined and tested by medical personnel. Do NOT induce vomiting. Wash out mouth with water provided person is conscious. Never give anything by mouth to an unconscious person. Get medical attention. Do NOT induce vomiting unless directed to do so by medical personnel. Exposure can cause: burning sensation, coughing, wheezing, laryngitis, shortness of breath, headache, nausea, and vomiting. Inhalation may result in spasm, inflammation, and edema of the larynx and bronchi, chemical pneumonitis, and pulmonary edema.

3 Page: 3 Section 5. Fire Fighting Measures Suitable Extinguishing Use alcohol-resistant foam, carbon dioxide, water, or dry chemical spray when fighting Media: fires involving this material. Use water spray to cool fire-exposed containers. Flammable Properties and Hazards: Flash Pt: Autoignition Pt: Emits toxic fumes under fire conditions. May react with metals, releasing flammable hydrogen gas. Explosive Limits: LEL: UEL: 5.3 Fire Fighting Instructions: As in any fire, wear self-contained breathing apparatus pressure-demand (NIOSH approved or equivalent), and full protective gear to prevent contact with skin and eyes. Section 6. Accidental Release Measures Protective Precautions, Protective Equipment and Emergency Procedures: Environmental Precautions: Methods and Material For Containment and Cleaning Up: Avoid breathing vapors and provide adequate ventilation. As conditions warrant, wear a NIOSH approved self-contained breathing apparatus, or respirator, and appropriate personal protection (rubber boots, safety goggles, and heavy rubber gloves). Take steps to avoid release into the environment, if safe to do so. Contain spill and collect, as appropriate. Transfer to a chemical waste container for disposal in accordance with local regulations Precautions To Be Taken in Handling: Precautions To Be Taken in Storing: Section 7. Handling and Storage Avoid breathing dust/fume/gas/mist/vapours/spray. Avoid prolonged or repeated exposure. Keep container tightly closed. Store in accordance with information listed on the product insert. 8.1 Exposure Parameters: Section 8. Exposure Controls/Personal Protection CAS # Partial Chemical Name Britain EH40 France VL Europe Potassium hydroxide STEL: 2 mg/m3 () STEL: 2.0 mg/m Water CAS # Partial Chemical Name OSHA TWA ACGIH TWA Other Limits Potassium hydroxide CEIL: 2 mg/m Water 8.2 Exposure Controls: Engineering Controls (Ventilation etc.): Personal protection equipment: Eye Protection: Protective Gloves: Other Protective Clothing: Use process enclosures, local exhaust ventilation, or other engineering controls to control airborne levels below recommended exposure limits. Safety glasses Compatible chemical-resistant gloves Lab coat Respiratory Equipment NIOSH approved respirator, as conditions warrant. (Specify Type): Work/Hygienic/Mainten Do not take internally.

4 Page: 4 ance Practices: Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower. Wash thoroughly after handling. Section 9. Physical and Chemical Properties 9.1 Information on Basic Physical and Chemical Properties Physical States: [ ] Gas [ X ] Liquid [ ] Solid Appearance and Odor: Melting Point: Boiling Point: Flash Pt: Evaporation Rate: Solution 0.00 C Explosive Limits: LEL: UEL: Vapor Pressure (vs. Air or mm Hg): Vapor Density (vs. Air = 1): Specific Gravity (Water = 1): Solubility in Water: Autoignition Pt: 9.2 Other Information Percent Volatile: Section 10. Stability and Reactivity Reactivity: Stability: Stability Note(s): Polymerization: Conditions To Avoid: Incompatibility - Materials To Avoid: Hazardous Decomposition Or Byproducts: Unstable [ ] Stable [ X ] Stable if stored in accordance with information listed on the product insert. Will occur [ ] Will not occur [ X ] acids aluminum copper flammable liquids magnesium nitro compounds nitromethane organic materials tin trichloroethylene zinc carbon monoxide hydrogen gas potassium oxides

5 11.1 Information on Toxicological Effects: Chronic Toxicological Effects: Carcinogenicity: SAFETY DATA SHEET Section 11. Toxicological Information Page: 5 The toxicological effects of this product have not been thoroughly studied. Potassium hydroxide - Toxicity Data: Oral LD50 (rat): 273 mg/kg; Potassium hydroxide - Irritation Data: Eyes (rabbit): 1 mg (24h) moderate; Skin (human): 50 mg (24h) severe; Skin (rabbit): 50 mg (24h) severe; Potassium hydroxide - Investigated as a mutagen. Only select Registry of Toxic Effects of Chemical Substances (RTECS) data is presented here. See actual entry in RTECS for complete information. Potassium hydroxide RTECS Number: TT NTP? No IARC Monographs? No OSHA Regulated? No Section 12. Ecological Information 12.1 Toxicity: Avoid release into the environment. Runoff from fire control or dilution water may cause pollution. Section 13. Disposal Considerations 13.1 Waste Disposal Dispose in accordance with local, state, and federal regulations. Method: Section 14. Transport Information 14.1 LAND TRANSPORT (US DOT): DOT Proper Shipping Name: Potassium hydroxide solution DOT Hazard Class: 8 CORROSIVE UN/NA Number: 1814 Packing Group: III 14.1 LAND TRANSPORT (European ADR/RID): ADR/RID Shipping Name: UN Number: Hazard Class: 14.3 AIR TRANSPORT (ICAO/IATA): Potassium hydroxide solution CORROSIVE Packing Group: ICAO/IATA Shipping Name: Potassium hydroxide solution UN Number: 1814 Packing Group: III Hazard Class: 8 - CORROSIVE IATA Classification: 8 Additional Transport Information: Transport in accordance with local, state, and federal regulations. When sold in quantities of less than or equal to 1 ml, or 1 g, with an Excepted Quantity Code of E1, E2, E4, or E5, this item meets the De Minimis Quantities exemption, per IATA Therefore packaging does not have to be labeled as Dangerous Goods/Excepted Quantity. Section 15. Regulatory Information EPA SARA (Superfund Amendments and Reauthorization Act of 1986) Lists CAS # Hazardous Components (Chemical Name) S. 302 (EHS) S. 304 RQ S. 313 (TRI) Potassium hydroxide No Yes 1000 LB No Water No No No III

6 Page: 6 CAS # Hazardous Components (Chemical Name) Other US EPA or State Lists Potassium hydroxide CAA HAP,ODC: No; CWA NPDES: No; TSCA: Inventory; CA PROP.65: No Water CAA HAP,ODC: No; CWA NPDES: No; TSCA: Inventory; CA PROP.65: No European Community Hazard Symbol codes: C Xi European Community Risk and Safety Phrases: R22 R35 S24/25 S26 S36/37/39 S45 Harmful if swallowed. Causes severe burns. Avoid contact with skin and eyes. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. Wear suitable protective clothing, gloves and eye/face protection. In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) Regulatory Information Statement: This SDS was prepared in accordance with Regulation (EC) No.1272/2008 and European Directive 67/548/EEC as amended. Section 16. Other Information Revision Date: Additional Information About This Product: Company Policy or Disclaimer: 05/28/2014 DISCLAIMER: This information is believed to be accurate and represents the best information currently available to us. However, we make no warranty of merchantability or any other warranty, express or implied, with respect to such information, and we assume no liability resulting from its use. Users should make their own investigations to determine the suitability of the information for their particular purposes.