Zirconium Silicide

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

E-Mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Product Name: Zirconium Silicide

Formula: ZrSi₂

CAS Number: 12039-90-6

II. HAZARDOUS INGREDIENTS

Hazardous Components: Zirconium Silicide

Percent (%): 0-100

OSHA/PEL: 5 mg/m³ (as Zr)

ACGIH/TLV: 5 mg/m³ (as Zr)

HMIS Rating:

Health: 2

Flammability: 0

Reactivity: 0

III. PHYSICAL DATA

Boiling Point: N/E or N/A

Melting Point: N/E or N/A

Specific Gravity: 4.88 g/cc at 22 ^oC

Solubility in H₂O: Insoluble

Appearance and Odor: Steel gray powder and pieces, no odor.

IV. FIRE AND EXPLOSION HAZARDS DATA

Flash Point: N/E or N/A

Method Used: Non-flammable

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

Autoignition Temperature: N/A

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

Special Firefighting 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 and Explosion Hazards: Zirconium silicide may emit toxic fumes if involved in a fire.

V. HEALTH HAZARD INFORMATION

Effects of Exposure:

To the best of our knowledge the chemical, physical, and toxicological properties of zirconium silicide have not been thoroughly investigated and reported. Zirconium compounds are not an important industrial poison. Most zirconium compounds in common use are insoluble and considered inert. Pulmonary granuloma in zirconium workers has been reported. (Sax, Dangerous Properties of Industrial Materials, eighth edition.)

Acute Effects:

Inhalation: May cause irritation to the respiratory tract, mucous membranes or the nose and throat.

Ingestion: May cause irritation to the gastrointestinal tract.

Skin: May cause irritation

Eye: May cause irritation

Chronic Effects:

Inhalation: May cause pulmonary granulomas.

Ingestion: No chronic health effects recorded.

Skin: May cause skin granulomas.

Eye: No chronic health effects recorded.

Routes of Entry: Inhalation, skin, eyes.

Target Organs: May affect the respiratory system and skin.

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

Carcinogenicity: Suspect NTP: No IARC Monographs: No OSHA regulated: No

EMERGENCY AND FIRST AID PROCEDURES:

INHALATION: Remove to fresh air; give oxygen if breathing is difficult. Seek medical attention.

INGESTION: Give 2 cups of water. Induce vomiting if large amounts were ingested. Seek medical attention. Never induce vomiting or give anything by mouth to an unconscious person.

SKIN: Remove contaminated clothing, brush off skin, wash area with soap and water. Seek medical attention if symptoms persist.

EYE: Flush eyes, including under eyelids, with lukewarm water for 15 minutes. Seek medical attention if symptoms persist.

VI. REACTIVITY DATA

Stability: Stable

Conditions to Avoid: None

Incompatibility (Materials to Avoid): None recorded

Hazardous Decomposition Products: None recorded

Hazardous Polymerization: Will not occur

VII. SPILL OR LEAK PROCEDURES

Steps to Be Taken in Case Material Is Released or Spilled: Wear appropriate respiratory and protective clothing. Isolate spill area and provide ventilation. Vacuum up the spill using a high efficiency particulate absolute (HEPA) air filter and place in a container for proper disposal. Take care not to raise dust.

Waste Disposal Method: Dispose of in accordance with Local, State and Federal Waste Disposal Regulations.

VIII. SPECIAL PROTECTION INFORMATION

Respiratory Protection (Specify Type): Wear a NIOSH-approved dust respirator.

Ventilation: Use local exhaust to maintain exposure below TLV. General exhaust recommended

Protective Gloves: Rubber gloves

Eye Protection: Safety Glasses

Other Protective Equipment: Wear protective apparel to prevent contamination of skin and clothing.

IX. SPECIAL PRECAUTIONS

Precautions to Be Taken in Handling and Storage: Store in tightly closed containers in a cool, dry place. Wash hands and face thoroughly after handling and before meals.

Work Practices: Implement engineering and work practice controls to reduce and maintain concentration of exposure. 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.

Control of Substances Hazardous to Health Regulations EH40 Occupational Exposure Limits:

Zirconium Compounds:

Maximum Exposure Limit: N/E

Occupational Exposure Standard: 5 mg/m³

Short-Term Exposure Limit: 10 mg/m³

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 damage resulting from handling or from contact with the above product.

Issued by: S. Dierks

Date: April 1994