Phosphor P-31, Type 139
MATERIAL SAFETY DATA SHEET
I. PRODUCT IDENTIFICATION
Manufacturer/Supplier:
ESPI Metals
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Product Name: Phosphor P-31, Type 139
Formula: ZnS:Ag:Cu
II. HAZARDOUS INGREDIENTS
Hazardous Component: Zinc Sulfide Silver Copper
CAS Number: 1314-98-3 7440-22-4 7440-50-8
Percent (%): ca 100 <0.1 <0.1
OSHA/PEL: NE 0.01 mg/m3 1 mg/m3 (dust); 0.1 mg/m3 (fume)
ACGIH/TLV: NE 0.01 mg/m3 1 mg/m3 (dust); 0.2 mg/m3 (fume)
III. PHYSICAL DATA
Boiling Point: N/A
Melting Point: ca 1850 oC
Specific Gravity: 4.1
Solubility in H2O: Insoluble
Appearance and Odor: White powder, odorless
IV. FIRE AND EXPLOSION HAZARDS DATA
Flash Point: N/A
Autoignition Temperature: N/A
Flammable Limits: Upper: N/A Lower: N/A
Extinguishing Media: Use extinguishing agents suitable for the surrounding 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.
Unusual Fire & Explosion Hazard: May burn to form sulfur dioxide at high temperatures (>950 oC). Contact with strong acids will liberate hydrogen sulfide. Hydrogen sulfide may form explosive mixtures with air.
V. HEALTH HAZARD INFORMATION
Effects of Exposure:
To the best of our knowledge the chemical, physical and toxicological properties of phosphor p-31 have not been thoroughly investigated and recorded.
Zinc compounds have variable toxicity, but generally are of low toxicity. Zinc is not inherently a toxic element. However, when heated, it evolves a fume of zinc oxide which when inhaled fresh can cause a disease known as “brass founders”, “ague” or “brass chills.” Zinc oxide dust which is not freshly formed is virtually innocuous. There is no cumulative effect from the inhalation of zinc fumes. (Sax, Dangerous Properties of Industrial Materials, eighth edition)
Hydrogen sulfide is a human poison by inhalation. Severe eye irritant and mucous membrane irritant. An asphyxiant. The irritant action has been explained on the bases that hydrogen sulfide combines with the alkali present in moist surface tissues to form sodium sulfide, caustic. Hydrogen sulfide does not combine with the hemoglobin of the blood; its asphyxiation is due to paralysis of the respiratory center. It is an insidious poison since sense of smell may be fatigued. The odor and irritating effects do not offer a dependable warning to workers who may be exposed to gradually increasing amounts and therefore become used to it (Sax, Dangerous Properties of Industrial Materials, eighth edition).
The absorption of silver compounds into the circulation and the subsequent deposition of the reduced silver in various tissues of the body may result in the production of a generalized greyish pigmentation of the skin and mucous membranes - a condition known as argyria. The introduction of fine particles of silver through breaks in the skin produces a local pigmentation at the site of the injury. These compounds may be irritating to the skin and mucous membranes. (Sax, Dangerous Properties of Industrial Materials).
Copper compounds may be irritating to the skin, eyes and respiratory tract. They may cause metal fume fever, hemolysis of the red blood cells and injury to the liver, lungs, kidneys and pancreas. Ingestion may also cause vomiting, gastric pain, dizziness, anemia, cramps, convulsions, shock, coma and death. Copper solutions may cause sensitization reactions.
Acute and Chronic Effects:
Inhalation: None expected. Zinc compounds are considered to have a relatively low order of toxicity. However, as a matter of good practice, exposure to high concentrations of the dust should be avoided.
Ingestion: Unknown, but probably none for any kind of accidental ingestion likely to occur in an industrial environment.
Skin/Eye Contact: Prolonged or repeated skin contact may cause dermatitis in sensitive individuals.
EMERGENCY AND FIRST AID PROCEDURES:
INHALATION: Remove to fresh air, keep warm and quiet, give oxygen if breathing is difficult and seek medical attention.
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.
SKIN: Remove contaminated clothing, brush material off skin, wash affected area with soap and water. Seek medical attention if symptoms persist.
EYE: Flush with copious amounts of water for at least 15 minutes. Seek medical attention if symptoms persist.
VI. REACTIVITY DATA
Stability: Stable
Incompatibility (Material to Avoid): Avoid contact with strong acids.
Hazardous Decomposition Procedures: Hydrogen sulfide is released when phosphor comes in contact with strong acids.
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. Isolate spill area and provide ventilation. Scoop or 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 State, Federal and Local regulations.
VIII. SPECIAL PROTECTION INFORMATION
Respiratory Protection: NIOSH/MSHA approved respirator
Ventilation: Use local exhaust ventilation which is adequate to limit personal exposure to levels which do not exceed the PEL or TLV. If such equipment is not available, use respirators as specified above. A minimum velocity of 100 CFM is recommended.
Protective gloves: Gloves are recommended if prolonged or repeated contact is likely.
Eye Protection: Safety glasses or goggles are recommended.
Other Protective Equipment:
IX. SPECIAL PRECAUTIONS
Precautions to Be Taken in Handling and Storage: Store in a cool, dry place in tightly sealed containers. Do not store together with acids or oxidizing agents. Wash thoroughly after handling. Maintain good housekeeping procedures to prevent accumulation of dust. Use clean-up methods which minimize dust generation such as vacuuming or wet clean-up. If airborne dust is generated, use an appropriate NIOSH approved respirator.
Work 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 after handling and before eating or smoking and at the end of the work shift. Do not shake clothing or other items to remove dust. Use a vacuum. Avoid dust inhalation and direct skin contact. Do not ingest. Do not blow dust off clothing or skin with compressed air. Maintain eyewash capable of sustained flushing, safety drench shower, and facilities for washing.
TSCA Listed: Yes
DOT Regulations:
Hazard Class: None
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 damages resulting from handling or from contact with the above product.
Issued by: S. Dierks
Revised/Verified: April 2012