Trade Name: Date Prepared: 10/03/07 Page: 1 of 5. P. O. Box 840 Valley Forge, PA USA

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1 MSDS MATERIAL SAFETY DATA SHEET Date Prepared: 10/03/07 Page: 1 of 5 1. CHEMICAL PRODUCT AND COMPANY IDENTIFICATION Product name: Product description: Manufacturer: Telephone: In case of emergency call: For transportation emergency Call CHEMTREC: Q-CEL 6014 Hollow Microspheres Inorganic hollow microspherical powder Potters Industries, Inc. P. O. Box 840 Valley Forge, PA USA 2. COMPOSITION/INFORMATION ON INGREDIENTS This product is a sodium silicate borate glassy gel and regarded as a mixture under the Toxic Substances Control Act. The following information is provided for identification purposes. Chemical and Common Name CAS Registry Number Wt. % OSHA PEL ACGIH TLV Silicic acid, sodium salt; Sodium silicate ~80% Not Established Not Established Boric acid, sodium salt; ~15% Not Established Not Established Sodium borate Water ~5% Not Established Not Established 3. HAZARDS IDENTIFICATION Emergency Overview: Eye contact: Skin contact: Inhalation: Ingestion: Chronic hazards: Physical hazards: White, odorless, powder. Causes mild eye irritation. Causes respiratory tract irritation. Borate content harmful to plants, particularly citrus crops. Noncombustible. Causes mild eye irritation. Non-irritating to skin. Causes irritation. Low toxicity and low density makes ingestion of acutely toxic amounts of this material very difficult or impossible. Not listed by NTP, IARC or OSHA as a carcinogen. Repeated ingestion of large quantities can cause toxic effects. See Section 11. Spills are slippery. 4. FIRST AID MEASURES Eye: Skin: Inhalation: Ingestion: In case of contact, immediately flush eyes with plenty of water for at least 15 minutes. Get medical attention if irritation persists. Remove to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical attention.

2 Date Prepared: 10/03/07 Page: 2 of 5 5. FIRE FIGHTING MEASURES Flammable limits: Extinguishing Media: Hazards to fire-fighters: Fire-fighting equipment: This material is noncombustible. This material is compatible with all extinguishing media. See Section 3 for information on hazards when this material is present in the area of a fire. The following protective equipment for fire fighters is recommended when this material is present in the area of a fire: standard fire-fighting turnout gear and self-contained breathing apparatus (SCBA) with eye protection. 6. ACCIDENTAL RELEASE MEASURES Personal protection: Environmental Hazards: Small spill cleanup: Large spill cleanup: CERCLA RQ: Wear chemical goggles. Use a NIOSH-approved dust mask or respirator. See section 8. Floats in water. Borate content harmful to some plants, particularly citrus crops. Not an Extremely Hazardous Substance under SARA Title III 302. Not a Toxic Chemical under SARA Title III 313. Hazard Categories under SARA Title III 311/312: Acute Carefully shovel or sweep up spilled material and place in suitable container. Avoid generating dust. Use appropriate Personal Protective Equipment (PPE). See section 8. Keep unnecessary people away; isolate hazard area and deny entry. Do not touch or walk through spilled material. Carefully shovel or sweep up spilled material and place in suitable container. Avoid generating dust. Use appropriate Personal Protective Equipment (PPE). See section 8. In case of contact with water, prevent runoff from entering into storm sewers and ditches which lead to natural waterways. There is no CERCLA Reportable Quantity for this material. If a spill goes off site, notification of state and local authorities is recommended. 7. HANDLING AND STORAGE Handling: Storage: Avoid contact with eyes. Avoid breathing dust. Keep container closed. Promptly clean up spills. Wash thoroughly after handling. Keep containers closed. Store in original containers or clean plastic containers. This product can absorb water from the air. In case of high humidity or storage for extended periods of time, use plastic bags to enclose product containers to avoid caking.

3 Date Prepared: 10/03/07 Page: 3 of 5 8. EXPOSURE CONTROLS/PERSONAL PROTECTION Engineering controls: Respiratory protection: Skin protection: Eye protection: Use with adequate ventilation. Eyewash station should be within direct access. Use a NIOSH-approved dust mask or respirator where dust occurs. Observe OSHA regulations for respirator use (29 C.F.R ) Wear body-covering clothing. Wear safety glasses and/or chemical goggles. 9. PHYSICAL AND CHEMICAL PROPERTIES Appearance: Powder. Color: White. Odor: Odorless. ph: Bulk density: Approximately 0.08 g/cc (5.0 lbs/ft 3 ). Solubility in water: Negligible. 10. STABILITY AND REACTIVITY Stability: Conditions to avoid: Materials to avoid: Hazardous decomposition products: This material is stable under all conditions of use and storage. None. Avoid contact with strong acids. None. 11. TOXICOLOGICAL INFORMATION Acute Data: Subchronic Data: When tested for primary irritation potential, a similar material caused mild eye irritation and was non-irritating to the skin. When a similar material was tested for acute oral toxicity to rats at a dosage level of 500 mg/kg body weight, all animals survived and gained weight. The following data is reported for its ingredients: the acute oral LD 50 in rats of sodium silicate ranges from 1500 mg/kg to 3200 mg/kg; and the acute oral LD 50 in rats of sodium borate is 2660 mg/kg as boric acid. This product has not been tested for respiratory toxicity. When a similar material was tested for respiratory toxicity in a 6-month intratracheal study in rats, no mortalities, untoward reactions, or observations correlated with exposure to the material. Minimal multifocal inflammation of the lung occurred in 90% of males and 80% of females. No appreciable increase in fibrous tissue was present in these lesions. In a study of rats fed sodium silicate in drinking water for three months, at 200, 600 and 1800 ppm, changes were reported in the blood chemistry of some animals, but no specific changes to the organs of the animals due to sodium silicate administration were observed in any of the dosage groups. Another study reported adverse effects to the kidneys of dogs fed sodium silicate in their diet at 2.4g/kg/day for 4 weeks, whereas rats fed the same dosage did not develop any treatment-related effects. A decreased number of births and survival to weaning was reported for rats fed

4 Date Prepared: 10/03/07 Page: 4 of 5 Special Studies: sodium silicate in their drinking water at 600 and 1200 ppm. In subchronic inhalation and feeding studies, high doses of boric acid and borates caused male reproductive toxicity, including impaired spermatogenesis, damaged testes and decreased fertility in rats, mice and dogs. Fetal malformations and reduced fetal birthweight have been observed following prenatal exposure to high dosages of borates. Sodium silicate was not mutagenic to the bacterium E. Coli when tested in a mutagenicity bioassay. Boric acid was mutagenic to the bacterium E. Coli when tested at high dosage, but tested negative in chromosome aberration and sister chromatid exchange tests. There are no known reports of carcinogenicity of sodium silicates or sodium borates. Frequent ingestion over extended periods of time of gram quantities of silicates is associated with the formation kidney stones and other siliceous urinary calculi in humans. Chronic ingestion of borates causes anorexia, vomiting mild diarrhea, skin rash and hair loss. Weight loss, convulsions, and anemia can also occur. Neither sodium silicate nor sodium borate is listed by IARC, NTP or OSHA as a carcinogen. 12. ECOLOGICAL INFORMATION Eco toxicity: Environmental Fate: Physical/Chemical: This product has not been tested for ecotoxicity potential. The following data is reported for sodium silicates: a 96 hour median tolerance for fish (Gambusia affnis) of 2320 ppm; a 96 hour median tolerance for water fleas (Daphnia magna) of 247 ppm; a 96 hour median tolerance for snail eggs (Lymnea) of 632 ppm; and a 96 hour median tolerance for Amphipoda of 160 ppm. The following data is reported for borates: A 96 hour median tolerance for fish (Limanda limanda) of 74 ppm as B; a 24 day LC 50 for fish (S. gairdneri) of 88 ppm as B and a 31 day LC 50 of 54 ppm as B; a 96 hour EC 10 for green algae (Scenedesmus subspicatus) of 24 ppm as B; and a 24 hour EC 50 for water fleas (Daphnia magna) of 242 ppm as B. Borates are used as insecticides and nonselective herbicides. Borates have a federal crop specific tolerance of 8 ppm (as B) for citrus fruit trees. This material is not persistent in aquatic systems. Floats in water. 13. DISPOSAL CONSIDERATIONS Classification: Disposal Method: Disposed material is not a RCRA hazardous waste. Dispose in accordance with federal, state and local regulations. 14. TRANSPORT INFORMATION DOT UN Status: This material is not a regulated hazardous material for transportation.

5 Date Prepared: 10/03/07 Page: 5 of REGULATORY INFORMATION CERCLA: SARA TITLE III: TSCA: No CERCLA Reportable Quantity has been established for this material. Not an Extremely Hazardous Substance under 302. Not a Toxic Chemical under 313. Hazard Categories under 311/312: Acute All ingredients of this material are listed on the TSCA inventory. 16. OTHER INFORMATION Prepared by: John G. Blumberg Supersedes revision of: 05/24/05 THE INFORMATION ON THIS SAFETY DATA SHEET IS BELIEVED TO BE ACCURATE AND IT IS THE BEST INFORMATION AVAILABLE TO POTTERS INDUSTRIES, INC. THIS DOCUMENT IS INTENDED ONLY AS A GUIDE TO THE APPROPRIATE PRECAUTIONS FOR HANDLING A CHEMICAL BY A PERSON TRAINED IN CHEMICAL HANDLING. POTTERS INDUSTRIES, INC. MAKES NO WARRANTY OF MERCHANTABILITY OR ANY OTHER WARRANTY, EXPRESS OR IMPLIED WITH RESPECT TO SUCH INFORMATION OR THE PRODUCT TO WHICH IT RELATES, AND WE ASSUME NO LIABILITY RESULTING FROM THE USE OR HANDLING OF THE PRODUCT TO WHICH THIS SAFETY DATA SHEET RELATES. USERS AND HANDLERS OF THIS PRODUCT SHOULD MAKE THEIR OWN INVESTIGATIONS TO DETERMINE THE SUITABILITY OF THE INFORMATION PROVIDED HEREIN FOR THEIR OWN PURPOSES.