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File Name: espimetals_com_potassiumsodiumalloy.asp

                                         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

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