MATERIAL SAFETY DATA SHEET







I       PRODUCT IDENTIFICATION



Trade Name:      Potassium/Sodium Alloy 56/44                                 Formula:            NaK2





II      HAZARDOUS INGREDIENTS



Potassium %: 56                    ACGIH(TLV): No data                        OSHA/PEL: N/D

Sodium %: 44                       ACGIH(TLV): No data                        OSHA/PEL: N/D





III     PHYSICAL DATA



                          813 oC                                                                         6.8 oC

Boiling Point:                                                                Melting Point:

Molecular Weight:         62.078                                              Specific Gravity:          0.865

Solubility in H2O:        Reacts violently with water                         Vapor Pressure:            No data





IV      FIRE AND EXPLOSION HAZARDS DATA



Flash Point: Pyrophoric                                                       Extinguishing Media: Dry powder only



Special Fire Fighting Procedures: Highly flammable. Material readily ignited with flame, sparks, friction or heat. Burning material

may release toxic and corrosive fumes. Leave the area unless fitted with a self-contained breathing apparatus and fire protective

clothing.



Unusual Fire and Explosion Hazard: Pyrophoric material. Material may ignite spontaneously on contact with air.





V       HEALTH HAZARD INFORMATION



Mode of Entry: Skin and Ingestion

Carcinogenicity: NTP: No         IARC: No           OSHA: No



Effects of Over Exposure: Potassium : Intraperitoneal (mouse): LD50: 700 mg/kg (details no reported). Sodium is highly reactive,

especially with moisture. Extremely corrosive to tissue.



EMERGENCY AND FIRST AID PROCEDURES:



EYES: Immediately flush the eyes with water for at least 15 minutes.

SKIN: In case of skin contact wash the affected area with soap and water for at least 5 minutes.

INHALATION: If inhaled remove victim to fresh air and seek medical attention if coughing, shortness of breath or irritation

persists.

INGESTION: If ingested give the victim plenty of water and seek medical assistance.

VI      REACTIVITY DATA



Stability: Air sensitive, moisture sensitive.

Incompatibility (Material to Avoid): Water, air, oxidizers, halogens, sulfur, phosphorus, carbon, alcohols, halogenated hydrocar-

bons, carbonyl compounds and carbon dioxide.



Hazardous Decomposition Products: Potassium oxide, potassium superoxide, and sodium oxide (when burned in air).

Hazardous Polymerization: No hazardous polymerization.

Conditions to Avoid: Contact with air or moisture. Material reacts explosively with water. Exposure to air can form explosive

superoxides.





VII     SPILL OR LEAK PROCEDURES



Steps to Be Taken in Case Material Is Released or Spilled: The material will ignite spontaneously in air. Burning material may

release toxic fumes. Leave the area unless fitted with a self-contained breathing apparatus. Smother fire with dry powder. Do not use

water.



Waste Disposal Method: Material should be disposed of in accordance with Local, State and Federal regulations.





VIII    SPECIAL PROTECTION INFORMATION



Respiratory Protection (Specify Type): Wear a NIOSH/MSHA approved dust mask.

Ventilation: Local Exhaust: Yes                                        Other: No



Protective Gloves: Yes                                                        Eye Protection: Goggles

Other Protective Equipment: Wear a full face shield, lab apron and suitable gloves.





IX      SPECIAL PRECAUTIONS



Precautions to Be Taken in Handling and Storing: Handle and store the material under an inert atmosphere of nitrogen or argon.

Keep away from heat.



Other Precautions: The material will react with air and moisture. Handle and store the material under and inert atmosphere of

nitrogen or argon.





Prepared by:     S. Dierks

Dated:           February 1992