MATERIAL SAFETY DATA SHEET

I.   PRODUCT IDENTIFICATION

Manufacturer/Supplier:

ESPI Metals

1050 Benson Way, Ashland, OR 97520

Toll Free (800) 638-2581 * Fax (541) 488-8313

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Product Name:    Calcium Tungstate

Formula:             CaWO₄

CAS Number:       7790-75-2

II.   HAZARDOUS INGREDIENTS

Hazardous Components:   Calcium Tungstate

Percent (%):                     0-100

OSHA/PEL:                        N/E

ACGIH/TLV:                       5 mg(W)/m³ 

HMIS Ratings:

Health:                               1

Flammability:                    0

Reactivity:                         0

III.   PHYSICAL DATA

Boiling Point:                    N/E

Melting Point:                   N/E

Specific Gravity:              6.06 g/cc

Solubility in H₂O:             Insoluble

Appearance and Odor:    White powder, no odor

IV.   FIRE AND EXPLOSION HAZARDS DATA

Flash Point:  N/A

Autoignition Temperature:  N/A

Explosive Limits:  Lower:  N/A         Upper:  N/A

Extinguishing Media:  Use suitable extinguishing media for surrounding material and type of fire.

Special Fire Fighting Procedures:  Firefighters must wear full face, self-contained breathing apparatus and full protective clothing to prevent contact with skin and eyes.  Fumes from fire are hazardous.  Isolate runoff to prevent environmental pollution.

Unusual Fire & Explosion Hazard:  In case of fire, may emit toxic metal oxide fumes.

V.   HEALTH HAZARD INFORMATION

Effects of Exposure:

To the best of our knowledge the chemical, physical and toxicological properties of calcium tungstate have not been thoroughly investigated and recorded.

Generally speaking, calcium compounds should be considered toxic only when they contain toxic components or as calcium oxide or hydroxide.  Calcium compounds are common air contaminants.

Tungsten compounds are considered somewhat more toxic than those of molybdenum.  However, industrially, this element does not constitute an important health hazard.  Heavy exposure to the dust or the ingestion of large amounts of the soluble compounds produces changes in body weight, behavior, blood cells, choline esterase activity and sperm in experimental animals.  (Sax, Dangerous Properties of Industrial Materials, eighth edition)

Acute Effects:

Inhalation:  Inhalation may cause irritation of the respiratory system and mucous membranes.

Ingestion:  No acute health effects recorded.

Skin:  May cause irritation.

Eye:  May cause irritation.

Chronic Effects:  No chronic effects recorded.

Target Organs:  May affect the respiratory system.

Medical Conditions Generally Aggravated by Exposure:  Pre-existing respiratory disorders.

Carcinogenicity:  NTP:  No               IARC:  No             OSHA:  No

EMERGENCY AND FIRST AID PROCEDURES:

INHALATION:  Remove to fresh air, keep warm and quiet, give oxygen if breathing is difficult and seek medical attention.

INGESTION:  If conscious, give 1-2 glasses of milk or water and induce vomiting.  Seek medical attention immediately.

SKIN:  Remove any contaminated clothing, brush material off of skin, flush with running water, wash carefully with soap and water, seek medical attention if symptoms persist.

EYE:  Flush with water, lifting upper and lower eyelids, for at least 15 minutes.  Seek medical attention if symptoms persist.

VI.   REACTIVITY DATA

Stability:  Stable

Conditions to Avoid:  None

Incompatibility (Material to Avoid):  Strong acids and bases.

Hazardous Decomposition Products:  Metal oxide fume

Hazardous Polymerization:  None

VII.   SPILL OR LEAK PROCEDURES

Steps to Be Taken in Case Material Is Released or Spilled:  Wear protective clothing and equipment specified in section VIII.  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:  In accordance with Local, State and Federal Waste Disposal Regulations.

VIII.   SPECIAL PROTECTION INFORMATION

Respiratory Protection:  NIOSH approved dust respirator.

Ventilation:  Use local exhaust to maintain concentration at low exposure levels.  General exhaust is recommended.

Protective Gloves:  Impervious gloves

Eye Protection:  Safety glasses

Other Protective Clothing or Equipment:   Protective gear suitable to prevent contamination.

IX.   SPECIAL PRECAUTIONS

Precautions to Be Taken in Handling and Storage:  Store in a cool dry area.  Store in tightly sealed container.  Wash thoroughly after handling.  Do not get in eyes, on skin or clothing.  Do not breathe dust.

Other Precautions:  Store away from acids.  Store away from alkalies (caustic solutions).

Work Practices:  Implement engineering and work practice controls to reduce and maintain concentration of exposure at low levels.  Use good housekeeping and sanitation practices.  Do not use tobacco or food in work area.  Wash thoroughly before eating or smoking.  Do not blow dust off clothing or skin with compressed air.  Maintain eyewash capable of sustained flushing and safety drench shower in work area.

DOT Regulations:

Hazard Class:          None

The above information is believed to be correct, but does not purport to be all inclusive and shall be used only as a guide.  ESPI shall not be held liable for any damages resulting from handling or contact with the above product.

Issued by:                           S. Dierks

Revised/Verified:                  May 2006