MATERIAL SAFETY DATA SHEET

SODIUM METASILICATE PENTAHYDRATE

Section I - IDENTIFICATION

PRODUCT: Sodium metasilicate pentahydrate

SYNONYMS: Crystamet, Metso beads

CHEMICAL FORMULA: Na₂SiO₃.5H₂O

CHEMICAL ABSTRACT NO.: 6834-92-0

PRODUCT CODE NO.: 17558

Section II - HAZARDOUS INGREDIENTS

Section III - HEALTH & FIRST AID INFORMATION

INHALATION: Irritates, may burn, causes violent sneezing or coughing. Will produce irritation to the gastro-intestinal or respiratory tract. Severe over-exposure can produce lung damage, choking, unconsciousness or death. Remove patient to fresh air. Seek medical attention if symptoms persist.

INGESTION: Burns, toxic. Give patient plenty of water or milk. Do not induce vomiting. Seek medical attention immediately.

EYE CONTACT: Burns. Immediately remove contact lenses. Can result in corneal damage or blindness. Rinse eyes immediately for at least 15 minutes with cold water. Seek medical attention.

SKIN CONTACT: Irritates, burns. Wash thoroughly with soap and water. The amount of tissue damage depends uponm length of contact. Seek medical attention if irritation persists or if burn results.

EFECTS OF EXPOSURE: Extremely dngerous in case of skin contact. Corrosive to eyes and skin. The amount of damage depends upon length of contact. Chronic exposure can produce eye irritation, local skin destruction or dermatitis. Repeated inhalation of dust can producevarying degrees of respiratory irritation or lung damage.

CARCINOGENIC EFFECTS: not available

MUTAGENIC EFFECTS: not available

TERATOGENIC EFFECTS: not available

TOXICITY OF PRODUCT TO REPRODUCTIVE SYSTEM: not available

TOXICOLOGICALLY SYNERISTIC PRODUCTS: not available

OTHER HEALTH HAZARDS: Extremely corrosive in case of skin contact.

LD50 (Acute, Oral, Mouse) 622 mg/kg

LD50 (Acute, Oral , Rat) 770 mg/kg

Section IV - PHYSICAL DATA

BOILING POINT: not available

MELTING POINT: 1089°C

SOLUBILITY IN WATER: 610g/l @ 30EC

APPEARANCE AND ODOUR: White solid (granular or powder)

SPECIFIC GRAVITY: not available

pH: basic

Section V - FIRE AND EXPLOSION HAZARDS

FLAMMABILITY CLASSIFICATION: non-flammable

SPECIAL FIRE FIGHTING PROCEDURES & PRECAUTIONS: Wear self-contained breathing apparatus and protective clothing.

UNUSUAL FIRE & EXPLOSION HAZARDS: May emit toxic fumes of Na_xO_x.

Section VI - REACTIVITY

STABILITY: Stable

HAZARDOUS POLYMERIZATION: Will not occur

CONDITIONS & MATERIALS TO AVOID: Heat, Organochlorides, Aluminum, Magnesium, strong acids

HAZARDOUS DECOMPOSITION PRODUCTS: Toxic fumes of Na_xO_x.

Section VII - EMPLOYEE PROTECTION

CONTROL MEASURES: Use in well ventilated area.

RESPIRATORY PROTECTION: Use a dust mask or respirator..

PROTECTIVE CLOTHING: Wear impervious gloves and plastic apron.

EYE PROTECTION: Wear safety goggles.

Section VIII - ENVIRONMENTAL PROTECTION

SPILL OR LEAK PRECAUTIONS: Wear gloves, goggles, apron and dust mask. Scoop or sweep spill into salvage container and hold for disposal. Wash spill area thoroughly with plenty of water.

WASTE DISPOSAL: Seek the advice of a professional disposal service.

Section IX - REGULATORY CONTROLS

DEPT. OF TRANSPORTATION: Regulated under the Transport of Dangerous Goods Act.

DOT CLASSIFICATION: UN 1759, Class8(9.2), Packing group III

DOT PROPER SHIPPING NAME: CORROSIVE SOLID, NOS (Sodium metasilicate)

OTHER DOT INFORMATION: n. ap.

WHMIS CLASSIFICATION:    E (Corrosive solid)

OTHER REGULATORY REQUIREMENT: none

Section X - PRECAUTIONS: HANDLING, STORAGE & USAGE

Solutions of sodium metasilicate are strongly alkaline.

Store in a cool, dry place.

PREPARED BY: MSDS Dept.                                  DATE: Update January 10, 2008