MATERIAL SAFETY DATA SHEET







I       PRODUCT IDENTIFICATION



Trade Name:      Dysprosium Fluoride                                            Formula:           DyF3

CAS #:           13569-80-7





II      HAZARDOUS INGREDIENTS



OSHA Hazardous (H)/Non-Hazardous (NH): H%: >99



SARA Title III Hazard Classification: Chronic Health Hazard.

Warning Statements: Dusts in high concentrations may cause skin, eye and respiratory tract irritation.





III     PHYSICAL DATA



Boiling Point ( oF):                                                            Melting Point ( oF):

                            3992 at 760 mm Hg                                                             2480

Vapor Density:              N/A                                                 Vapor Pressure:           N/A

Molecular Weight:           219.5                                               Specific Gravity:         N/A

Appearance and Odor:        Beige powder solid, odorless.                       Solubility in H2O:        Insoluble





IV      FIRE AND EXPLOSION HAZARDS DATA



Flash Point/Method: N/A                                                         Autoignition Temperature: N/A

Flammable Limits: N/A



Extinguishing Media: Not combustible. Use extinguishing method suitable for surrounding fire.

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

Cool containers exposed to fire with water.



Unusual Fire & Explosion Hazard: Under fire conditions, toxic, corrosive fumes are emitted.

Hazardous Decomposition Materials (Under Fire Conditions): Hydrogen Fluoride, Fluorine.





V       HEALTH HAZARD INFORMATION



Exposure Limits in Air (TWA or suggested control figure): Fluorides, As /F/ 2.5 mg/cu m (OSHA/TWA)



Potential Health Effects:



Eye (Acute): Non-irritating. May cause foreign body irritation only.

Skin (Acute): Non-irritating.

Inhalation (Acute): Low acute inhalation toxicity. May cause upper respiratory tract irritation.

Ingestion (Acute): Practically non-toxic.



Effects of Repeated Exposure: No data found.

Carcinogenicity: This product does not contain any ingredient designated by IARC, NTP, ACGIH, or OSHA as a probable human

carcinogen.



Significant Laboratory Data with Possible Relevance to Man: No data found.

Medical conditions possibly Aggravated by Overexposure: Inhalation of product may aggravate existing chronic respiratory

problems such as asthma, emphysema or bronchitis.

EMERGENCY AND FIRST AID PROCEDURES:



EYES: Rinse particulate matter from eye. Seek medical attention if irritation develops or persists or if visual changes occur.

SKIN: In case of contact, wash with plenty of soap and water. Seek medical attention if irritation develops or persists.

INHALATION: If respiratory irritation or distress occurs remove victim to fresh air. Seek medical attention if respiratory irritation

or distress continues.

INGESTION: If victim is conscious and alert, give 1 - 2 glasses of water to drink. Do not give anything by mouth to an unconscious

person. Seek medical attention. Do not leave victim unattended.



NOTE TO PHYSICIAN: All treatments should be based on observed signs and symptoms of distress in the patient. Consideration

should be given to the possibility that overexposure to materials other than this product may have occurred. Treat symptomatically.

No specific antidote available.





VI      REACTIVITY DATA



Stability: This material is stable under normal handling and storage conditions described in Section IV.

Incompatibility (Material to Avoid): Moisture, strong acids.



Hazardous Decomposition Products (Thermal Decomposition): Hydrogen fluoride, fluorine.

Hazardous Polymerization: Will not occur.



Conditions to Avoid: Dusting conditions. Open flame.





VII     SPILL OR LEAK PROCEDURES



Steps to be Taken in Case Material is Released or Spilled: Sweep or vacuum up and place in an appropriate closed container (see

section IV). Clean up residual material by washing area with water.



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





VIII    SPECIAL PROTECTION INFORMATION



Respiratory Protection: In dusting conditions, use a NIOSH/MSHA approved dust mask.

Ventilation: Provide adequate ventilation. Use local exhaust as needed to maintain airborne exposure below control limits.



Protective Clothing: Work clothing and gloves.

Eye Protection: Safety glasses with side shields. Chemical workers Dust-Proof Goggles (under dusting conditions).



Other Protective Equipment: Maintain a sink, safety shower and eyewash fountain in the work area. Have oxygen readily avail-

able.



Work Practice Controls: Do not store, use, and/or consume foods, beverages, tobacco products, or cosmetics in areas where this

material is stored. Wash hands and face carefully before eating, drinking, using tobacco, applying cosmetics, or using the toilet.

Wash exposed skin promptly to remove accidental splashes of contact with this material.

IX      SPECIAL PRECAUTIONS



Other Handling and Storage Conditions: Store in tightly closed containers. Store in an area that is dry. Dry powders can build

static electricity charges when subjected to the friction of conveying, mixing or sliding. Provide adequate precautions, such as

electrical grounding, or inert atmospheres when material is used in the presence of flammable materials to prevent ignition. Avoid

direct or prolonged contact with skin and eyes. Avoid breathing dusts.



Other Precautions: Avoid creating dusts as this product, like most materials in powder form, is capable of creating a dust explosion.

TSCA Inventory Status: Product is TSCA certified.

Transportation Status: Not regulated.





Prepared By:     S. Dierks

Date:            December 1995