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Product Name:                 Tin (IV) Oxide                                                              Chemical Family:             Metal Oxide

Synonyms:                        Stannic Oxide, Stannic Anhydride, Cassiterite             Formula:                           SnO2

Formula Weight:             150.69                                                                           CAS #:                               18282-10-5






Hazardous Components           %               OSHA/PEL        ACGIH/TLV                    Sec.302                Sec.304                Sec.313

Tin Oxide                                   100             2 mg Sn/m3         2 mg Sn/m3                        No                       No                       No






Boiling Point:                   1800 oC (sublimes)                                                       Specific Gravity (H2O=1):             6.95

Vapor Pressure:               N/A                                                                               Vapor Density (air=1):                   N/A

Freezing/Melting Point:  1630 oC                                                                        Evaporation Rate:                          N/A

% Volatiles:                      N/A                                                                               Solubility in H2O:                           Insoluble

Appearance and Odor:    White Powder or pieces, Odorless.






Flash Point: N/A                                                                                                    Autoignition Temperature: No data

Flammable Limits: Upper: N/A                Lower: NA


Extinguishing Media: Non-combustible. Use extinguishing media appropriate for surrounding materials and type of fire.

Special Fire Fighting Procedures: No special firefighting procedures needed. Use normal procedures which include wearing NIOSH/MSHA approved self-contained breathing apparatus, flame and chemical resistant clothing; hats, boots and gloves. If without risk, remove material from fire area. Cool container with water from maximum distance.


Unusual Fire & Explosion Hazard: When heated to decomposition, tin oxide may emit acrid smoke and irritating fumes.






Effects of Exposure:


              To the best of our knowledge the chemical, physical and toxicological properties of tin oxide have not been thoroughly investigated and recorded.


              Tin compounds have variable toxicity. Elemental tin and inorganic tin compounds have low toxicity and are poorly absorbed when ingested. Some inorganic tin salts are irritating or can liberate toxic fumes on decomposition. The latter is particularly true of tin halogens. (Sax, Dangerous Properties of Industrial materials, eighth edition.)




Acute Effects:


Inhalation: May cause irritation of the upper respiratory system.

Ingestion: Poor absorption makes it relatively non-toxic.

Skin: May cause irritation.

Eyes: May cause irritation.


Chronic Effects:


Inhalation: May cause pneumonoconiosis.

Ingestion: None recorded.

Skin: None recorded.

Eye: None recorded


Routes of Entry: Inhalation, skin, and eyes


Medical Conditions, if Any, Aggravated by the Chemical: Pre-existing respiratory disorders.

Target Organs: May affect the respiratory system.

Carcinogenicity: NTP: No      IARC: No OSHA: No         EPA: No




INHALATION: Remove victim to fresh air; keep warm and quiet; give oxygen if breathing is difficult and seek medical attention if symptoms persist.

INGESTION: Seek medical attention.

SKIN: Remove contaminated clothing, flood skin with large amounts of water. If irritation persists seek medical attention.

EYE: Immediately flush eyes, including under eyelids, with large amounts of water for at least 15 minutes. Call a physician.






Stability: Stable


Conditions to Avoid: Thermal decomposition.

Incompatibles (Materials to Avoid): Aluminum, potassium, magnesium, sodium, ClF3, HS3, acids, oxidizing agents, alkali metals, interhalogens.


Hazardous Decomposition Products: Tin and SnO2

Hazardous Polymerization: Will not occur.






Steps to Be Taken in Case Material Is Released or Spilled: Wear appropriate respiratory and protective gear 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: In accordance with Local, State and Federal waste disposal regulations.








Respiratory Protection: NIOSH approved dust respirator.


Ventilation: Local exhaust ventilation may be necessary to control any air contaminants to within the PEL or TLV during the use of this product. Good general ventilation is recommended.


Eye/Face Protection: ANSI approved safety goggles.

Protective Gloves: Rubber


Other Protective Equipment: Protective gear suitable to prevent contamination.






Other Precautions to Be Taken in Handling and Storage: Keep container tightly closed. Store in a cool, dry, well-ventilated area. Wash thoroughly after use.


Other Precautions: Lab coat and apron, flame and chemical resistant coveralls, eyewash capable of sustained flushing, safety drench shower and hygienic facilities for washing.


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 before eating and smoking. Do not blow dust off clothing with compressed air.


TSCA Registered: Yes


              Some of the chemicals listed herein are research or experimental substances which may be toxic, as defined by various governmental regulations. In accordance with Environmental Protection Agency regulation and the Toxic Substances Control Act (TSCA), these materials should only be handled by, or under the direct supervision of, a "technically qualified individual", as defined in 40 CFR 710.2(aa).


              The above information is accurate to the best of our knowledge. However, since, data, safety standards, and government regulation are subject to change, and the conditions of handling and use or misuse are beyond our control, ESPI makes no warranty, neither expressed nor implied, with respect to the completeness or continuing accuracy of the information contained herein, and disclaims all liability for reliance thereon. Users should satisfy themselves that they have all current data relevant to their particular use.



Issued by:            S. Dierks

Date:                    August 2004