: CYCLOTETRAMETHYLENEDICHLOROSILANE

SIC2564.0 - CYCLOTETRAMETHYLENEDICHLOROSILANE CYCLOTETRAMETHYLENEDICHLOROSILANE SIC2564.0 Date of issue: 06/02/2015 Version: 1.0 SECTION 1: Identification of the substance/mixture and of the company/undertaking 1.1. Product identifier Product form : Substance Physical state : Liquid Substance name : CYCLOTETRAMETHYLENEDICHLOROSILANE Product code : SIC2564.0 Formula : C4H8Cl2Si Synonyms : 1,1-DICHLOROSILACYCLOPENTANE Chemical family : ORGANOCHLOROSILANE 1.2. Relevant identified uses of the substance or mixture and uses advised against 1.2.1. Relevant identified uses Use of the substance/mixture : Chemical intermediate For research and industrial use only 1.2.2. Uses advised against 1.3. Details of the supplier of the safety data sheet GELEST, INC. 11 East Steel Road Morrisville, PA 19067 USA T 215-547-1015 - F 215-547-2484 - (M-F): 8:00 AM - 5:30 PM EST info@gelest.com - www.gelest.com GELEST INC. Stroofstrasse 27 Geb.2901 65933 Frankfurt am Main Germany T +49-(0)-69-3800-2150 - F +49-(0)-69-3800-2300 - (M-F): 8:00 AM - 5:30 PM info@gelestde.com - www.gelestde.com 1.4. Emergency telephone number Emergency number : CHEMTREC: 1-800-424-9300 (USA); +1 703-527-3887 (International) SECTION 2: Hazards identification 2.1. Classification of the substance or mixture Classification according to Regulation (EC) No. 1272/2008 [CLP] Flam. Liq. 3 H226 Skin Corr. 1B H314 Eye Dam. 1 H318 Full text of H-phrases: see section 16 Classification according to Directive 67/548/EEC [DSD] or 1999/45/EC [DPD] C; R35 Xi; R41 R10 Full text of R-phrases: see section 16 Adverse physicochemical, human health and environmental effects 06/02/2015 EN (English US) SDS ID: SIC2564.0 1/10

2.2. Label elements Labeling according to Regulation (EC) No. 1272/2008 [CLP] Hazard pictograms (CLP) : Signal word (CLP) Hazard statements (CLP) Precautionary statements (CLP) : Danger GHS02 GHS05 : H226 - Flammable liquid and vapor H314 - Causes severe skin burns and eye damage : P280 - Wear protective gloves/protective clothing/eye protection/face protection P210 - Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking P233 - Keep container tightly closed P240 - Ground/bond container and receiving equipment P260 - Do not breathe vapors P264 - Wash hands thoroughly after handling P310 - Immediately call a POISON CENTER or doctor/physician 2.3. Other hazards SECTION 3: Composition/information on ingredients 3.1. Substance Substance type Name : Mono-constituent CAS No : 2406-33-9 EC no : 219-299-6 : CYCLOTETRAMETHYLENEDICHLOROSILANE Name Product identifier % Classification according to Directive 67/548/EEC Cyclotetramethylenedichlorosilane (CAS No) 2406-33-9 (EC no) 219-299-6 > 97 C; R35 Xi; R41 R10 Hydrogen chloride (CAS No) 7647-01-0 (EC no) 231-595-7 (EC index no) 017-002-00-2 T; R23 C; R35 Name Product identifier % Classification according to Regulation (EC) No. 1272/2008 [CLP] Cyclotetramethylenedichlorosilane (CAS No) 2406-33-9 (EC no) 219-299-6 Hydrogen chloride (CAS No) 7647-01-0 (EC no) 231-595-7 (EC index no) 017-002-00-2 > 97 Flam. Liq. 3, H226 Skin Corr. 1B, H314 Eye Dam. 1, H318 Press. Gas Acute Tox. 3 (Inhalation), H331 Skin Corr. 1A, H314 Full text of R- and H- phrases: see section 16 3.2. Mixture Not applicable 4.1. Description of first aid measures First-aid measures general First-aid measures after inhalation First-aid measures after skin contact First-aid measures after eye contact First-aid measures after ingestion : Remove contaminated clothing and shoes. In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible). If possible show this sheet; if not available show packaging or label. : Remove victim to fresh air and keep at rest in a position comfortable for breathing. Get medical advice/attention. : Wash with plenty of soap and water. Get immediate medical advice/attention. : Immediately flush eyes thoroughly with water for at least 15 minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Get immediate medical advice/attention. : Never give anything by mouth to an unconscious person. Get medical advice/attention. 4.2. Most important symptoms and effects, both acute and delayed Symptoms/injuries Symptoms/injuries after inhalation : Causes severe skin burns and eye damage. : May cause irritation to the respiratory tract. Overexposure may cause: Coughing. Headache. Nausea. 06/02/2015 EN (English US) SDS ID: SIC2564.0 2/10

Symptoms/injuries after skin contact Symptoms/injuries after eye contact Symptoms/injuries after ingestion : Causes (severe) skin burns. : Causes serious eye damage. : May be harmful if swallowed. 4.3. Indication of any immediate medical attention and special treatment needed Note to physician- Eyes: If pain persists, repeat washing for 15 minutes or until ph of eye returns to normal. If great pain persists, place one (1) drop Benoxinate solution (0.4%) in the affected eye. SECTION 5: Firefighting measures 5.1. Extinguishing media Suitable extinguishing media Unsuitable extinguishing media : Water spray. Foam. Carbon dioxide. Dry chemical. : Water. 5.2. Special hazards arising from the substance or mixture Fire hazard : Flammable liquid and vapor. Irritating fumes of hydrogen chloride and organic acid vapors may develop when material is exposed to water or open flame. 5.3. Advice for firefighters Firefighting instructions Protection during firefighting : Use water spray to cool exposed surfaces. Exercise caution when fighting any chemical fire. : Do not enter fire area without proper protective equipment, including respiratory protection. Avoid all eye and skin contact and do not breathe vapor and mist. SECTION 6: Accidental release measures 6.1. Personal precautions, protective equipment and emergency procedures General measures : Remove ignition sources. Use special care to avoid static electric charges. 6.1.1. For non-emergency personnel Emergency procedures 6.1.2. For emergency responders Protective equipment : Evacuate unnecessary personnel. : Equip cleanup crew with proper protection. 6.2. Environmental precautions Prevent entry to sewers and public waters. Notify authorities if liquid enters sewers or public waters. 6.3. Methods and material for containment and cleaning up Methods for cleaning up 6.4. Reference to other sections See Heading 8. Exposure controls and personal protection. : Clean up any spills as soon as possible, using an absorbent material to collect it. Sweep or shovel spills into appropriate container for disposal. Use only non-sparking tools. SECTION 7: Handling and storage 7.1. Precautions for safe handling Precautions for safe handling Hygiene measures : Avoid all eye and skin contact and do not breathe vapor and mist. Provide good ventilation in process area to prevent accumulation of vapors. Containers must be properly grounded before beginning transfer. Take precautionary measures against static discharge. Use only nonsparking tools. : Wash hands and other exposed areas with mild soap and water before eating, drinking or smoking and when leaving work. Wash contaminated clothing before reuse. 7.2. Conditions for safe storage, including any incompatibilities Technical measures Storage conditions Incompatible materials Storage area 7.3. Specific end use(s) : Ground/bond container and receiving equipment. : Keep container tightly closed. : Acids. Alcohols. Oxidizing agent. SECTION 8: Exposure controls/personal protection 8.1. Control parameters : Store in a well-ventilated place. Store away from heat. EU IOELV TWA (mg/m³) 8 mg/m³ EU IOELV TWA (ppm) 5 ppm EU IOELV STEL (mg/m³) 15 mg/m³ EU IOELV STEL (ppm) 10 ppm Austria MAK (mg/m³) 8 mg/m³ 06/02/2015 EN (English US) SDS ID: SIC2564.0 3/10

Austria MAK (ppm) 5 ppm Austria MAK Short time value (mg/m³) 15 mg/m³ Austria MAK Short time value (ppm) 10 ppm Belgium Limit value (mg/m³) 8 mg/m³ Belgium Limit value (ppm) 5 ppm Belgium Short time value (mg/m³) 15 mg/m³ Belgium Short time value (ppm) 10 ppm Bulgaria OEL TWA (mg/m³) 8.0 mg/m³ Bulgaria OEL TWA (ppm) 5 ppm Bulgaria OEL STEL (mg/m³) 15.0 mg/m³ Bulgaria OEL STEL (ppm) 10 ppm Cyprus OEL TWA (mg/m³) 8 mg/m³ Cyprus OEL TWA (ppm) 5 ppm Cyprus OEL STEL (mg/m³) 15 mg/m³ Cyprus OEL STEL (ppm) 10 ppm France VLE (mg/m³) 7.6 mg/m³ (restrictive limit) France VLE (ppm) 5 ppm (restrictive limit) Germany TRGS 900 Occupational exposure limit value (mg/m³) 3 mg/m³ (The risk of damage to the embryo or fetus can be excluded when AGW and BGW values are observed) Germany TRGS 900 Occupational exposure limit value (ppm) 2 ppm (The risk of damage to the embryo or fetus can be excluded when AGW and BGW values are observed) Gibraltar OEL TWA (mg/m³) 8 mg/m³ Gibraltar OEL TWA (ppm) 5 ppm Gibraltar OEL STEL (mg/m³) 15 mg/m³ Gibraltar OEL STEL (ppm) 10 ppm Greece OEL TWA (mg/m³) 7 mg/m³ Greece OEL TWA (ppm) 5 ppm Greece OEL STEL (mg/m³) 7 mg/m³ Greece OEL STEL (ppm) 5 ppm Italy - Portugal - USA ACGIH ACGIH Ceiling (ppm) 2 ppm Italy OEL TWA (mg/m³) 8 mg/m³ Italy OEL TWA (ppm) 5 ppm Italy OEL STEL (mg/m³) 15 mg/m³ Italy OEL STEL (ppm) 10 ppm Latvia OEL TWA (mg/m³) 8 mg/m³ Latvia OEL TWA (ppm) 5 ppm USA IDLH US IDLH (ppm) 50 ppm USA NIOSH NIOSH REL (ceiling) (mg/m³) 7 mg/m³ USA NIOSH NIOSH REL (ceiling) (ppm) 5 ppm USA OSHA OSHA PEL (Ceiling) (mg/m³) 7 mg/m³ USA OSHA OSHA PEL (Ceiling) (ppm) 5 ppm Spain VLA-ED (mg/m³) 7.6 mg/m³ (indicative limit value) Spain VLA-ED (ppm) 5 ppm (indicative limit value) Spain VLA-EC (mg/m³) 15 mg/m³ Spain VLA-EC (ppm) 10 ppm Switzerland VLE (mg/m³) 6 mg/m³ Switzerland VLE (ppm) 4 ppm Switzerland VME (mg/m³) 3.0 mg/m³ Switzerland VME (ppm) 2 ppm Netherlands Grenswaarde TGG 8H (mg/m³) 8 mg/m³ Netherlands Grenswaarde TGG 15MIN (mg/m³) 15 mg/m³ United Kingdom WEL TWA (mg/m³) 2 mg/m³ (aerosol mist and gas) United Kingdom WEL TWA (ppm) 1 ppm (aerosol mist and gas) United Kingdom WEL STEL (mg/m³) 8 mg/m³ (aerosol mist and gas) United Kingdom WEL STEL (ppm) 5 ppm (aerosol mist and gas) 06/02/2015 EN (English US) SDS ID: SIC2564.0 4/10

Czech Republic Exposure limits (PEL) (mg/m³) 8 mg/m³ Finland HTP-arvo (15 min) 7.6 mg/m³ (including solution) Finland HTP-arvo (15 min) (ppm) 5 ppm (including solution) Hungary Exposure Limit Value 8 mg/m³ Hungary CK-érték 16 mg/m³ Ireland OEL (8 hours ref) (mg/m³) 8 mg/m³ Ireland OEL (8 hours ref) (ppm) 5 ppm Ireland OEL (15 min ref) (mg/m3) 15 mg/m³ Ireland OEL (15 min ref) (ppm) 10 ppm Lithuania IPRV (mg/m³) 8 mg/m³ Lithuania IPRV (ppm) 5 ppm Lithuania TPRV (mg/m³) 15 mg/m³ Lithuania TPRV (ppm) 10 ppm Malta OEL TWA (mg/m³) 8 mg/m³ Malta OEL TWA (ppm) 5 ppm Malta OEL STEL (mg/m³) 15 mg/m³ Malta OEL STEL (ppm) 10 ppm Norway TWA (Takverdi) (mg/m³) 7 mg/m³ Norway TWA (Takverdi) (ppm) 5 ppm Poland NDS (mg/m³) 5 mg/m³ Poland NDSCh (mg/m³) 10 mg/m³ Romania OEL TWA (mg/m³) 8 mg/m³ Romania OEL TWA (ppm) 5 ppm Romania OEL STEL (mg/m³) 15 mg/m³ Romania OEL STEL (ppm) 10 ppm Slovakia NPHV (priemerná) (mg/m³) 8.0 mg/m³ Slovakia NPHV (priemerná) (ppm) 5 ppm Slovakia NPHV (Hraničná) (mg/m³) 15 mg/m³ Sweden Target Value (TGV) (mg/m³) 8 mg/m³ Sweden Target Value (TGV) (ppm) 5 ppm Canada (Quebec) PLAFOND (mg/m³) 7.5 mg/m³ Canada (Quebec) PLAFOND (ppm) 5 ppm Portugal OEL TWA (mg/m³) 8 mg/m³ (indicative limit value) Portugal OEL TWA (ppm) 5 ppm (indicative limit value) Portugal OEL STEL (mg/m³) 15 mg/m³ (indicative limit value) Portugal OEL STEL (ppm) 10 ppm (indicative limit value) Portugal OEL - Ceilings (ppm) 2 ppm Portugal OEL chemical category (PT) A4 - Not Classifiable as a Human Carcinogen 8.2. Exposure controls Appropriate engineering controls Personal protective equipment : Provide local exhaust or general room ventilation. : Avoid all unnecessary exposure. Emergency eye wash fountains and safety showers should be available in the immediate vicinity of any potential exposure. Hand protection Eye protection Skin and body protection Respiratory protection : Neoprene or nitrile rubber gloves. : Chemical goggles or face shield. Contact lenses should not be worn. : Wear suitable protective clothing. : NIOSH-certified combination organic vapor/acid gas (yellow cartridge) respirator. SECTION 9: Physical and chemical properties 9.1. Information on basic physical and chemical properties Physical state : Liquid Appearance : Clear liquid. 06/02/2015 EN (English US) SDS ID: SIC2564.0 5/10

Molecular mass : 155.1 g/mol Color : Straw. Odor : Acrid. Similar to hydrogen chloride. Odor threshold Refractive index ph Relative evaporation rate (butyl acetate=1) Melting point Freezing point : < 0 C Boiling point : 142-143 C Flash point : 25 C Auto-ignition temperature Decomposition temperature Flammability (solid, gas) : Flammable liquid and vapor Vapor pressure Relative vapor density at 20 C : > 1 Relative density : 1.185 VOC content : 100 % Solubility : Reacts with water. Log Pow Log Kow Viscosity, kinematic Viscosity, dynamic Explosive properties Oxidizing properties Explosion limits 9.2. Other information SECTION 10: Stability and reactivity 10.1. Reactivity 10.2. Chemical stability Stable in sealed containers stored under a dry inert atmosphere. 10.3. Possibility of hazardous reactions Reacts with water and moisture in air, liberating hydrogen chloride. 10.4. Conditions to avoid Heat. Open flame. Sparks. 10.5. Incompatible materials Acids. Alcohols. Oxidizing agent. 10.6. Hazardous decomposition products Hydrogen chloride. Organic acid vapors. SECTION 11: Toxicological information 11.1. Information on toxicological effects Acute toxicity LD50 oral rat 238-277 mg/kg LD50 dermal rabbit > 5010 mg/kg LC50 inhalation rat (mg/l) 1.68 mg/l (Exposure time: 1 h) ATE CLP (oral) 700.000 mg/kg body weight ATE CLP (gases) 1562.000 ppmv/4h Skin corrosion/irritation : Causes severe skin burns and eye damage. Serious eye damage/irritation : Causes serious eye damage. Respiratory or skin sensitization Germ cell mutagenicity 06/02/2015 EN (English US) SDS ID: SIC2564.0 6/10

Carcinogenicity IARC group Reproductive toxicity Specific target organ toxicity (single exposure) Specific target organ toxicity (repeated exposure) Aspiration hazard Symptoms/injuries after inhalation Symptoms/injuries after skin contact Symptoms/injuries after eye contact Symptoms/injuries after ingestion Reason for classification 3 - Not classifiable : May cause irritation to the respiratory tract. Overexposure may cause: Coughing. Headache. Nausea. : Causes (severe) skin burns. : Causes serious eye damage. : May be harmful if swallowed. : Expert judgment SECTION 12: Ecological information 12.1. Toxicity 12.2. Persistence and degradability 12.3. Bioaccumulative potential 12.4. Mobility in soil 12.5. Results of PBT and vpvb assessment 12.6. Other adverse effects Other adverse effects : This substance may be hazardous to the environment. SECTION 13: Disposal considerations 13.1. Waste treatment methods Waste disposal recommendations Ecology - waste materials SECTION 14: Transport information 14.1. UN number UN-No. (ADR) : 2986 UN-No.(IATA) : 2986 UN-No. (IMDG) : 2986 : Dispose in a safe manner in accordance with local/national regulations. Dispose of contents/container to licensed waste disposal facility. : Avoid release to the environment. 14.2. UN proper shipping name Proper Shipping Name (ADR) Proper Shipping Name (IATA) Proper Shipping Name (IMDG) Transport document description (ADR) : CHLOROSILANES, CORROSIVE, FLAMMABLE, N.O.S. : Chlorosilanes, corrosive, flammable, n.o.s. : CHLOROSILANES, CORROSIVE, FLAMMABLE, N.O.S. : UN 2986 CHLOROSILANES, CORROSIVE, FLAMMABLE, N.O.S. (CYCLOTETRAMETHYLENEDICHLOROSILANE), 8 (3), II, (D/E) 14.3. Transport hazard class(es) Class (ADR) : 8 Class (IATA) : 8 Class (IMDG) : 8 Subsidiary risks (ADR) : 3 Subsidiary risks (IMDG) : 3 06/02/2015 EN (English US) SDS ID: SIC2564.0 7/10

Hazard labels (ADR) : 8, 3 Hazard labels (IATA) : 8, 3 Hazard labels (IMDG) : 8, 3 14.4. Packing group Packing group (ADR) : II Packing group (IATA) : II Packing group (IMDG) : II 14.5. Environmental hazards Other information : No supplementary information available. 14.6. Special precautions for user 14.6.1. Overland transport Hazard identification number (Kemler No.) : X83 Classification code (ADR) : CF1 Orange plates : Special provision (ADR) : 548 Transport category (ADR) : 2 Tunnel restriction code (ADR) : D/E Limited quantities (ADR) : 0 Excepted quantities (ADR) : E0 EAC : 4W APP : A(fl) 14.6.2. Transport by sea Limited quantities (IMDG) : 0 Excepted quantities (IMDG) : E0 Packing instructions (IMDG) : P010 Tank instructions (IMDG) : T14 Tank special provisions (IMDG) : TP2, TP7, TP13, TP27 EmS-No. (Fire) : F-E EmS-No. (Spillage) : S-C Stowage category (IMDG) : C 14.6.3. Air transport CAO packing instructions (IATA) : 876 CAO max net quantity (IATA) : 30L PCA packing instructions (IATA) : Forbidden PCA Limited quantities (IATA) : Forbidden PCA limited quantity max net quantity (IATA) : Forbidden PCA max net quantity (IATA) : Forbidden PCA Excepted quantities (IATA) : E0 Special provision (IATA) : A1 ERG code (IATA) : 8F 06/02/2015 EN (English US) SDS ID: SIC2564.0 8/10

14.7. Transport in bulk according to Annex II of MARPOL 73/78 and the IBC Code Not applicable SECTION 15: Regulatory information 15.1. Safety, health and environmental regulations/legislation specific for the substance or mixture 15.1.1. EU-Regulations No REACH Annex XVII restrictions CYCLOTETRAMETHYLENEDICHLOROSILANE is not on the REACH Candidate List Contains no REACH candidate substance CYCLOTETRAMETHYLENEDICHLOROSILANE is not on the REACH Annex XIV List Contains no REACH Annex XIV substances. 15.1.2. National regulations Listed on the AICS (Australian Inventory of Chemical Substances) Listed on the Canadian DSL (Domestic Sustances List) Listed on IECSC (Inventory of Existing Chemical Substances Produced or Imported in China) Listed on the EEC inventory EINECS (European Inventory of Existing Commercial Chemical Substances) Listed on the Japanese ENCS (Existing & New Chemical Substances) inventory Listed on the Korean ECL (Existing Chemicals List) Listed on NZIoC (New Zealand Inventory of Chemicals) Listed on PICCS (Philippines Inventory of Chemicals and Chemical Substances) Listed on the United States TSCA (Toxic Substances Control Act) inventory Japanese Poisonous and Deleterious Substances Control Law Listed on the Canadian IDL (Ingredient Disclosure List) Cyclotetramethylenedichlorosilane (2406-33-9) Listed on the Canadian NDSL (Non-Domestic Substances List) Listed on the EEC inventory EINECS (European Inventory of Existing Commercial Chemical Substances) Listed on the United States TSCA (Toxic Substances Control Act) inventory 15.2. Chemical safety assessment SECTION 16: Other information Abbreviations and acronyms : Abbreviations: ND: Not Determined, No Data; NA: Not Applicable; LD: Lethal Dose; LC: Lethal Concentration; ATE: Acute Toxicity Estimates; H: hour; : C unless otherwise stated; mm: millimeters Hg, torr; PEL: permissible exposure level; TWA: time weighted average; TLV: threshold limit value; TG: Test Guideline; NIOSH: National Institute for Occupational Safety and Health; IARC: International Agency for Research on Cancer; NTP: National Toxicology Program; HMIS: Hazardous Material Information System; CAS No.: Chemcial Abstract Service Registration Number; EC No.: European Commission Registration Number; EC Index No.: European Commission Index Number; OECD: The Organisation for Economic Co-operation and Development. Full text of R-, H- and EUH-phrases: Acute Tox. 3 (Inhalation) Acute toxicity (inhalation) Category 3 Eye Dam. 1 Serious eye damage/eye irritation Category 1 Flam. Liq. 3 Flammable liquids Category 3 Press. Gas Skin Corr. 1A Skin Corr. 1B H226 H314 H318 H331 R10 R23 R35 R41 C T Gases under pressure Skin corrosion/irritation Category 1A Skin corrosion/irritation Category 1B Flammable liquid and vapor Causes severe skin burns and eye damage Causes serious eye damage Toxic if inhaled Flammable Toxic by inhalation Causes severe burns Risk of serious damage to eyes Corrosive Toxic 06/02/2015 EN (English US) SDS ID: SIC2564.0 9/10

Xi Irritant Prepared by safety and environmental affairs. SDS EU (REACH Annex II) - Custom According to Regulation (EC) No. 453/2010 The information contained in this document has been gathered from reference materials and/or Gelest, Inc. test data and is to the best knowledge and belief of Gelest, Inc. accurate and reliable. Such information is offered solely for your consideration, investigation and verification. It is not suggested or guaranteed that the hazard precautions or procedures described are the only ones which exist. Gelest, Inc. makes no warranties, express or implied, with respect to the use of such information and assumes no responsibility therefore. Information on this safety data sheet is not intended to constitute a basis for product specifications. 2014 Gelest Inc. Morrisville, PA 19067 06/02/2015 EN (English US) SDS ID: SIC2564.0 10/10