SECTION I - PRODUCT IDENTIFICATION Germanium metal, powder and pieces. US National Poison Hotline

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1 SECTION I - PRODUCT IDENTIFICATION MANUFACTURER NAME AND ADDRESS: TELEPHONE NUMBERS: Kurt J. Lesker Co CHEMTREC (800) P.O. Box Route 51 Clairton, PA UPC/EAN: SYNONYMS Germanium metal; Germanium element US National Poison Hotline (703) (outside USA) (800) DATES: Date Created: 06/23/2006 Revision: 06/25/2008 CHEMICAL FAMILY: Metal DOT HAZARD LABEL: FORMULA: Ge MOLECULAR WEIGHT: SECTION II - HAZARDOUS INGREDIENTS/IDENTITY INFORMATION HAZARDOUS COMPONENTS (CHEMICAL NAME) NAME: Germanium CAS #: PERCENTAGE: % OSHA PEL: NE ACGIH TLV: NE OTHER LIMITS: NE SEC.302 (EHS): No SEC.304 RQ: No SEC.313: No SECTION III - PHYSICAL/CHEMICAL CHARACTERISTICS PHYSICAL STATES: [ ] Gas, [ ] Liquid, [ X ] Solid BOILING POINT: C ( F) to C ( F) MELTING POINT: C ( F) to C ( F) SPECIFIC GRAVITY (WATER = 1): 5.35 at 25.0 C (77.0 F) DENSITY: VAPOR PRESSURE (VS. AIR OR MM HG): VAPOR DENSITY (VS. AIR = 1): EVAPORATION RATE (VS BUTYL ACETATE=1): SOLUBILITY IN WATER: insoluble PERCENT VOLATILE: N.A. PH: APPEARANCE AND ODOR Gray-white, crystalline, brittle powder or pieces, no odor.

2 SECTION IV - FIRE AND EXPLOSION HAZARD DATA FLASH PT: N.A. METHOD USED: EXPLOSIVE LIMITS: LEL: NA UEL: NA EXTINGUISHING MEDIA USE: Not applicable. Use suitable extinguishing media for surrounding materials and type of fire. SPECIAL FIRE FIGHTING PROCEDURES Firefighters must wear full face, self-contained breathing apparatus with full protective clothing to prevent contact with skin and eyes. Fumes from fire are hazardous. Isolate runoff to prevent environmental pollution. UNUSUAL FIRE AND EXPLOSION HAZARDS In powder form, Germanium is capable of creating a dust explosion. Germanium oxidizes at C, does not volatilize to approximately 1350C. May ignite on contact with chlorine or bromine + heat. May have a violent reaction with nitric acid. May have an explosive reaction when heated with potassium chlorate or potassium nitrate. May have an incandescent reaction when heated with oxygen or potassium. STABILITY: Unstable [ ] Stable [ X ] CONDITIONS TO AVOID - INSTABILITY SECTION V - REACTIVITY DATA INCOMPATIBILITY - MATERIALS TO AVOID Aqua regia, concentrated sulfuric acid, fused alkalies, nitrates or carbonates, halogens and oxidants. HAZARDOUS DECOMPOSITION OR BYPRODUCTS Oxides of germanium HAZARDOUS POLYMERIZATION: Will occur [ ] Will not occur [ X ] CONDITIONS TO AVOID - HAZARDOUS POLYMERIZATION SECTION VI - HEALTH HAZARD DATA ROUTE(S) OF ENTRY: Inhalation? Yes, Skin? No, Eyes? No, Ingestion? No, Other: N HEALTH HAZARDS (ACUTE AND CHRONIC) To the best of our knowledge the chemical, physical and toxicological properties of germanium have not been thoroughly investigated and recorded.

3 Germanium compounds are considered to be of a low order of toxicity, but rare instances of poisoning have been reported in the literature. Experimental LD50 values are typically about mg/kg for parenteral route and mg/kg for ingestion. The animals suffer from hypothermia, diarrhea, and respiratory, and cardiac failure. (Sax, Dangerous Properties of Industrial Materials, eighth edition) INHALATION: Acute: Inhaled dust is rapidly absorbed. May cause irritation to the respiratory tract and acute germanium toxicity. Chronic: May cause chronic germanium toxicity. INGESTION: Acute: No acute health effects recorded. SKIN: Acute: Moderately toxic by subcutaneous route. May cause irritation. EYE: Acute: May cause irritation. TARGET ORGANS: May affect the skin, eyes and respiratory system. CARCINOGENITICY: NTP? No, IARC Monographs? No, OSHA Regulated? No CARCINOGENICITY/OTHER INFORMATION ihl-rat LCLO: 3860 mg/m3/4h ihl-rat TCLO: 250 mg/m3/6h 14 W-I RECOMMENDED EXPOSURE LIMITS: See "Section II" LD 50/LC 50: See "Carcinogenicity/Other Information" SIGNS AND SYMPTOMS OF EXPOSURE INHALATION: May cause coughing, sneezing, difficulty breathing and pulmonary edema. Acute germanium toxicity may cause: hypothermia, listlessness, diarrhea, cyanosis, edema and hemorrhage of lungs, petechial hemorrhage in the walls of the small intestines and a peritoneal effusion which is rich in protein. Edematous changes are also seen in heart muscle and in the parenchymal cells of the liver and kidneys. Chronic germanium toxicity may cause: growth and fatty degeneration of the liver. INGESTION: No acute or chronic health effects recorded. SKIN: May cause redness and itching. EYE: May cause redness, itching and watering. MEDICAL CONDITIONS GENERALLY AGGRAVATED BY EXPOSURE Pre-existing respiratory disorders. EMERGENCY AND FIRST AID PROCEDURES INHALATION: Remove victim to fresh air. SKIN: Remove contaminated clothing; brush material off skin; wash affected area with mild soap and water; seek medical attention if symptoms persist. EYE: Flush eyes with lukewarm water, lifting upper and lower eyelids, for at least 15 minutes. Seek

4 medical attention if symptoms persist. NOTE TO PHYSICIAN No data available. SECTION VII - PRECAUTIONS FOR SAFE HANDLING AND USE STEPS TO BE TAKEN IN CASE MATERIAL IS RELEASED OR SPILLED Wear appropriate respiratory and protective equipment specified in section VIII-control measures. Isolate spill area and provide ventilation. Vacuum up spill using a high efficiency particulate absolute (HEPA) air filter and place in a closed container for proper disposal. Take care not to raise dust. WASTE DISPOSAL METHOD Dispose of in accordance with local, state and federal regulations. HAZARD LABEL INFORMATION: Store in cool, dry area Store in tightly sealed container Wash thoroughly after handling PRECAUTIONS TO BE TAKEN IN HANDLING PRECAUTIONS TO BE TAKEN IN STORING OTHER PRECAUTIONS SECTION VIII- CONTROL MEASURES PROTECTIVE EQUIPMENT SUMMARY - HAZARD LABEL INFORMATION: NIOSH approved respirator Impervious gloves Safety glasses RESPIRATORY EQUIPMENT (SPECIFY TYPE) NIOSH approved respirator VENTILATION If user operations generate dust, fume or mist, use ventilation to keep exposure to airborne contaminants to low exposures. Good general ventilation is recommended. EYE PROTECTION Safety glasses PROTECTIVE GLOVES Rubber gloves OTHER PROTECTIVE CLOTHING Protective gear suitable to prevent contamination WORK/HYGIENIC/MAINTENANCE PRACTICES Implement engineering and work practice controls to reduce and maintain concentration of exposure at low

5 levels. Use good housekeeping and sanitation practices. Do not use tobacco or food in work area. Wash thoroughly before eating and smoking. Do not blow dust off clothing or skin with compressed air. SECTION IX - ADDITIONAL COMMENTS Kurt J. Lesker Company ( KJLC ) believes the information contained in this Material Safety Data Sheet is accurate as of the Date of Last Revision specified. The information relates only to typical properties of the product. Do not use the information for product performance or specification purposes. The information is for use by technically skilled persons at their own risk. KJLC MAKES NO EXPRESS OR IMPLIED WARRANTY OF ANY KIND, INCLUDING WITHOUT LIMITATION WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE, WITH RESPECT TO THE PRODUCT OR THE INFORMATION. The information may not be valid for product use in combination with any other product or material or in any process. KJLC expressly disclaims any liability arising from any use of the product or any reliance on the information. Do not treat the information (a) as assurance that use of the product will not infringe patent or other rights or (b) as a license or grant of patent or other property rights. KJLC means KJLC and each of its subsidiaries. Abbreviations used: NA=Not Applicable NE: Not Established