ELECTRONIC SPACE PRODUCTS INTERNATIONAL

1050 Benson Way, Ashland, OR 97520

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E-Mail: sales@espimetals.com

MATERIAL SAFETY DATA SHEET

I            PRODUCT IDENTIFICATION

Trade Name:      Thulium Sulfide                                                                          Molecular Formula:        Tm₂S₃

CAS #:                12166-30-2

II           HAZARDOUS INGREDIENTS

%: 100                                            PEL: Not Established                                   TLV: Not Established

III         PHYSICAL DATA

Boiling Point (^oC):                          No Data                                                          Vapor Density (Air=1):                  N/A       

Specific Gravity (water=1):           No Data                                                          Vapor Pressure (mm Hg):             N/A

Hygroscopicity:                              Moisture Reactive                                          % Volatiles by Volume:                 Zero

Solubility in H₂O:                           Decomposes                                                   Molecular Weight:                         434.06

Melting Point (^oC):                         No Data

Appearance and Odor:                  Off-White to yellow powder; rotten odor in moist air.

IV         FIRE AND EXPLOSION HAZARDS DATA

Flash Point (Method used): Not Established                                                        Autoignition Temp.: Not Established

Flammable Limits: Not Established

Extinguishing Media: Use Class D or other suitable extinguishing agent.

Special Fire Fighting Procedures: Wear a NIOSH/MSHA approved self-contained breathing apparatus and full protective clothing.

Unusual Fire & Explosion Hazard: When heated to decomposition, it may emit highly toxic fumes of oxide of sulfur.

V           HEALTH HAZARD INFORMATION

Routes of Entry: Inhalation, Skin, Eyes and Ingestion. This material has not been thoroughly investigated

Effects of Overexposure:

Skin Contact: Powder or dust may cause irritation, dermatitis.

Eye Contact: May cause irritation

Inhalation: May irritate mucous membranes and upper respiratory tract.

Ingestion: No specific data found.

EMERGENCY AND FIRST AID PROCEDURES:

EYES: Flush eyes, including under eyelids with copious amounts of water (lukewarm if possible) for at least 15 minutes. If irritation or redness persists, consult a physician.

SKIN: Remove contaminated clothing, and flush skin with copious amounts of water. Seek medical attention if redness or irritation persists.

INHALATION: Move victim to fresh air. If having trouble breathing administer oxygen. Consult a physician if necessary.

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

VI         REACTIVITY DATA

Stability: Stable

Conditions to Avoid: None

Hazardous Polymerization: Will not occur

Hazardous Decomposition Products: Hydrogen sulfide, oxides of sulfides

Incompatibility (Materials to Avoid): Water, steam, moisture, acids, and oxidizing agents.

VII        SPILL OR LEAK PROCEDURES

Steps to Be Taken in Case Material Is Released or Spilled: Eliminate all sources of ignition. Evacuate area. Wear appropriate protective gear and a high-efficiency dust respirator, eliminate all sources of ignition. Cover spill with dry sand or dry vermiculite, mix well and carefully transfer to a well-marked container. Close container tightly. Submit or retain for proper disposal.

Waste Disposal Method: In accordance with Local, State and Federal Waste Disposal Regulations.

VIII      SPECIAL PROTECTION INFORMATION

Respiratory Protection (Specify Type): NIOSH/MSHA approved high efficiency particle respirator for conditions where adequate ventilation is not available.

Ventilation: Glove bag or box in inert atmosphere preferred. Local-Acceptable.

Protective Gloves: Rubber

Eye Protection: ANSI approved safety goggles or faceshield.

Other: Protection to avoid contact with skin and clothing.

Special Note: Eyewash and shower capable of sustained flushing. Handle and store in an inert gas such as argon. Avoid contact with water, steam, moisture. May cause irritation to skin, eyes, mucous membranes. Flammable when exposed to flame.

              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.

Prepared by:        S. Dierks

Dated:                  March 1993