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MATERIAL SAFETY DATA SHEET

I            PRODUCT IDENTIFICATION

Trade Name:                    Zirconium Nitride, powder                                           Synonym:           Zirconium nitride

Chemical Family:             Metal nitride                                                                 Formula:            ZrN

Molecular Weight:           105.23                                                                           CAS #:                25658-42-8

II           HAZARDOUS INGREDIENTS

Hazardous Components:        %            OSHA PEL:       ACGIH TLV:      Other Limits:        Sec. 302       Sec. 304       Sec. 313

Zirconium nitride                      0-100      5 mg(Zr)/m³        5 mg(Zr)/m³          STEL 10 mg/m³      No                No                No

HMIS Ratings (0-4): Health: 2             Flammability: 0 Reactivity: 1 Protective Equip: Glasses, gloves, combination respirator

III         PHYSICAL DATA

Boiling Point:                           N/E or N/A                                              Melting Point:                                 2930.0 ^oC

Specific Gravity (H₂O=1):      7.09                                                         Solubility (Weight % In H₂O):     Insoluble

Vapor Density (Air=1):           Not applicable                                         % Volatile by Volume:                  N/E or N/A

Vapor pressure (mm Hg):      N/A                                                         Evaporation Rate:                          N/A

Appearance And Odor:          Yellow-brown powder, no odor.                        Physical States:                           Solid

IV         FIRE AND EXPLOSION HAZARDS DATA

Flash Point: N/E or N/A                                                                          Method Used: Non-Flammable

Explosive Limits: LEL: N/A  UEL: N/A

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: When heated to decomposition or comes in contact with water, zirconium nitride may emit toxic fumes of ammonia.

V           HEALTH HAZARD INFORMATION

Effects of Exposure:

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

              Zirconium compounds are not and important industrial poison. Most zirconium compounds in common use are insoluble and considered inert. Pulmonary granuloma in zirconium workers has been reported. The details of the toxicity of nitrites as a group are unknown (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: No acute health effects recorded.

Skin: May cause irritation.

Eye: May cause irritation.

Chronic Effects:

Inhalation: May cause pulmonary edema.

Ingestion: No chronic health effects recorded.

Skin: May cause dermatitis and skin granulomas.

Eye: No chronic health effects recorded.

Routes of Entry: Inhalation, skin and eyes.

Target Organs: May affect the respiratory system and skin.

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

Carcinogenicity: NTP: No    IARC Monographs: No         OSHA Regulated: No

EMERGENCY AND FIRST AID PROCEDURES:

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

INGESTION: Give 1-2 glasses of water and induce vomiting, seek immediate medical attention. Never induce vomiting or give anything by mouth to an unconscious person.

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 medical attention if symptoms persist.

VI         REACTIVITY DATA

Stability: Stable

Conditions to Avoid (Instability): None

Incompatibility (Material to Avoid): Acids and Water

Hazardous Decomposition Products: Ammonia and oxides of zirconium

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 equipment specified in Section VIII - Special Protection Information. 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 a tightly sealed container, store in a cool, dry place. Wash thoroughly after handling.

Precautions to Be Taken in Handling and Storing: None

Other Precautions: Zirconium Nitride reacts with water. Handle and store in a dry controlled atmosphere.

VIII      SPECIAL PROTECTION INFORMATION

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

Ventilation: Local Exhaust: To maintain concentration at or below TLV, PEL                Mechanical (General): Not recommended

Special: Handle in a dry, controlled atmosphere                                                Other: None

Protective Gloves: Rubber Gloves

Other Protective Clothing or Equipment: 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 levels. Use good housekeeping and sanitation practices. Do not use tobacco or food in work area. Wash thoroughly before eating and smoking. So not blow dust off clothing or skin with compressed air.

IX         ADDITIONAL COMMENTS

              Some of the chemicals listed herein are research or experimental substances which may be toxic, as defined by various governmental regulations. In accordance with Environmental Protection Agency regulations and the Toxic Substance Control Act (TSCA), these materials should only be handled by, or under the direct supervision of, a "technically qualified individual", as defined in 40CFR 710.2 (aa).

              The above information is accurate to the best of our knowledge. However, since data, safety standards, and government regulations are subject to change, and the conditions of handling and use or misuse are beyond our control, ESPI MAKES NO WARRANTY, EITHER EXPRESSED NOR IMPLIED, WITH RESPECT TO THE COMPLETENESS OR CONTINUING ACCURACY OF THE INFORMATION CONTAINED HEREIN, AND DISCLAIMS ALL LIABILITY FOR RELIANCE THEREON. Users should satisfy themselves that they have all current data relevant to their particular use.

Prepared By:       S. Dierks

Dated:                  January 1996