Name:
Selenium(iv) oxide p.a.
Synonym:
Selenious Anhydride, Selenium Oxide, Selenium (IV) Dioxid
CAS:
7446-08-4
Section 1 - Chemical Product
MSDS Name:Selenium(iv) oxide p.a.
Synonym:Selenious Anhydride, Selenium Oxide, Selenium (IV) Dioxid
Synonym:Selenious Anhydride, Selenium Oxide, Selenium (IV) Dioxid
Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS
| CAS# | Chemical Name | emsds | EINECS# |
| 7446-08-4 | SELENIUM(IV) OXIDE | 100.0 | 231-194-7 |
| Hazard Symbols: T Risk Phrases: 23/25 33 |
Section 3 - HAZARDS IDENTIFICATION
EMERGENCY OVERVIEW
Toxic by inhalation and if swallowed. Danger of cumulative effects.Corrosive.Toxic.
Potential Health Effects
Eye:
Causes severe eye burns. May result in corneal injury. Causes redness and pain. May cause pink, puffy eyelids due to an allergic reaction.
Skin:
Causes skin burns. May cause skin sensitization, an allergic reaction, which becomes evident upon re-exposure to this material.
Causes redness and pain.
Ingestion:
Harmful if swallowed. May cause severe gastrointestinal tract irritation with nausea, vomiting and possible burns. May cause liver and kidney damage. May cause effects similar to those of acute inhalation.
Inhalation:
Inhalation of high concentrations may cause central nervous system effects characterized by nausea, headache, dizziness, unconsciousness and coma. Causes respiratory tract irritation. Inhalation of fumes may cause metal fume fever, which is characterized by flu-like symptoms with metallic taste, fever, chills, cough, weakness, chest pain, muscle pain and increased white blood cell count. May cause spleen and liver damage.
Chronic:
May cause liver and kidney damage. May cause anemia and other blood cell abnormalities. Repeated exposure may cause damage to the spleen. Chronic exposure to selenium may cause central nervous system effects, digestive tract disturbances, pallor, garlic breath, Chronic exposure to selenium may cause pallor, garlic breath, metallic taste, anemia, liver and spleen damage.
Toxic by inhalation and if swallowed. Danger of cumulative effects.Corrosive.Toxic.
Potential Health Effects
Eye:
Causes severe eye burns. May result in corneal injury. Causes redness and pain. May cause pink, puffy eyelids due to an allergic reaction.
Skin:
Causes skin burns. May cause skin sensitization, an allergic reaction, which becomes evident upon re-exposure to this material.
Causes redness and pain.
Ingestion:
Harmful if swallowed. May cause severe gastrointestinal tract irritation with nausea, vomiting and possible burns. May cause liver and kidney damage. May cause effects similar to those of acute inhalation.
Inhalation:
Inhalation of high concentrations may cause central nervous system effects characterized by nausea, headache, dizziness, unconsciousness and coma. Causes respiratory tract irritation. Inhalation of fumes may cause metal fume fever, which is characterized by flu-like symptoms with metallic taste, fever, chills, cough, weakness, chest pain, muscle pain and increased white blood cell count. May cause spleen and liver damage.
Chronic:
May cause liver and kidney damage. May cause anemia and other blood cell abnormalities. Repeated exposure may cause damage to the spleen. Chronic exposure to selenium may cause central nervous system effects, digestive tract disturbances, pallor, garlic breath, Chronic exposure to selenium may cause pallor, garlic breath, metallic taste, anemia, liver and spleen damage.
Section 4 - FIRST AID MEASURES
Eyes: Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately. Do NOT allow victim to rub or keep eyes closed.
Skin:
Get medical aid immediately. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse. Discard contaminated clothing in a manner which limits further exposure.
Ingestion:
If victim is conscious and alert, give 2-4 cupfuls of milk or water.
Never give anything by mouth to an unconscious person. Get medical aid immediately.
Inhalation:
Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
Notes to Physician:
Skin:
Get medical aid immediately. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse. Discard contaminated clothing in a manner which limits further exposure.
Ingestion:
If victim is conscious and alert, give 2-4 cupfuls of milk or water.
Never give anything by mouth to an unconscious person. Get medical aid immediately.
Inhalation:
Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
Notes to Physician:
Section 5 - FIRE FIGHTING MEASURES
General Information:
As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Substance is noncombustible. Reacts with water to form corrosive acids.
Extinguishing Media:
Substance is noncombustible; use agent most appropriate to extinguish surrounding fire.
As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Substance is noncombustible. Reacts with water to form corrosive acids.
Extinguishing Media:
Substance is noncombustible; use agent most appropriate to extinguish surrounding fire.
Section 6 - ACCIDENTAL RELEASE MEASURES
General Information: Use proper personal protective equipment as indicated in Section 8.
Spills/Leaks:
Vacuum or sweep up material and place into a suitable disposal container. Clean up spills immediately, observing precautions in the Protective Equipment section. Avoid generating dusty conditions.
Provide ventilation.
Spills/Leaks:
Vacuum or sweep up material and place into a suitable disposal container. Clean up spills immediately, observing precautions in the Protective Equipment section. Avoid generating dusty conditions.
Provide ventilation.
Section 7 - HANDLING and STORAGE
Handling:
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Minimize dust generation and accumulation. Do not get in eyes, on skin, or on clothing. Keep container tightly closed. Do not ingest or inhale.
Storage:
Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Keep containers tightly closed. Do not get water inside containers.
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Minimize dust generation and accumulation. Do not get in eyes, on skin, or on clothing. Keep container tightly closed. Do not ingest or inhale.
Storage:
Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Keep containers tightly closed. Do not get water inside containers.
Section 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION
Engineering Controls:
Use adequate ventilation to keep airborne concentrations low.
Personal Protective Equipment Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHAs eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166.
Skin:
Wear appropriate protective gloves to prevent skin exposure.
Clothing:
Wear appropriate protective clothing to prevent skin exposure.
Respirators:
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Use adequate ventilation to keep airborne concentrations low.
Personal Protective Equipment Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHAs eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166.
Skin:
Wear appropriate protective gloves to prevent skin exposure.
Clothing:
Wear appropriate protective clothing to prevent skin exposure.
Respirators:
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Section 9 - PHYSICAL AND CHEMICAL PROPERTIES
Physical State: Solid
Appearance: light pink
Odor: pungent sour
pH: Not available.
Vapor Pressure: 12.5 mm Hg @70c
Viscosity: Not available.
Boiling Point: Not available.
Freezing/Melting Point: 340 deg C
Autoignition Temperature: Not applicable.
Flash Point: Not applicable.
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature: Not available.
Solubility in water: Soluble in water.
Specific Gravity/Density: 3.954
Molecular Formula: SeO2
Molecular Weight: 110.9588
Section 10 - STABILITY AND REACTIVITY
Chemical Stability:
Stable under normal temperatures and pressures.
Conditions to Avoid:
Incompatible materials, contact with water.
Incompatibilities with Other Materials:
Strong oxidizing agents.
Hazardous Decomposition Products:
Selenium/selenium oxides, selenious acid.
Hazardous Polymerization: Will not occur.
Stable under normal temperatures and pressures.
Conditions to Avoid:
Incompatible materials, contact with water.
Incompatibilities with Other Materials:
Strong oxidizing agents.
Hazardous Decomposition Products:
Selenium/selenium oxides, selenious acid.
Hazardous Polymerization: Will not occur.
Section 11 - TOXICOLOGICAL INFORMATION
RTECS#:
CAS# 7446-08-4: VS8575000 LD50/LC50:
CAS# 7446-08-4: Oral, mouse: LD50 = 23300 ug/kg; Oral, rat: LD50 = 68100 ug/kg.
Carcinogenicity:
SELENIUM(IV) OXIDE - IARC: Group 3 carcinogen (listed as ** undefined **).
Other:
See actual entry in RTECS for complete information.
CAS# 7446-08-4: VS8575000 LD50/LC50:
CAS# 7446-08-4: Oral, mouse: LD50 = 23300 ug/kg; Oral, rat: LD50 = 68100 ug/kg.
Carcinogenicity:
SELENIUM(IV) OXIDE - IARC: Group 3 carcinogen (listed as ** undefined **).
Other:
See actual entry in RTECS for complete information.
Section 12 - ECOLOGICAL INFORMATION
Section 13 - DISPOSAL CONSIDERATIONS
Dispose of in a manner consistent with federal, state, and local regulations.
Section 14 - TRANSPORT INFORMATION
IATA
Shipping Name: SELENIUM COMPOUND, N.O.S.
Hazard Class: 6.1
UN Number: 3283
Packing Group: III
IMO
Shipping Name: SELENIUM COMPOUND, N.O.S.
Hazard Class: 6.1
UN Number: 3283
Packing Group: III
RID/ADR
Shipping Name: SELENIUM COMPOUND, N.O.S.
Dangerous Goods Code: 6.1(55C)
UN Number: 3283
Section 15 - REGULATORY INFORMATION
European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: T
Risk Phrases:
R 23/25 Toxic by inhalation and if swallowed.
R 33 Danger of cumulative effects.
Safety Phrases:
S 7/8 Keep container tightly closed and dry.
S 20/21 When using do not eat, drink or smoke.
S 24/25 Avoid contact with skin and eyes.
S 28 After contact with skin, wash immediately
with...
S 28A After contact with skin, wash immediately with
plenty of water.
S 43 In case of fire, use ... (indicate in the space
the precise type of fire-fighting equipment. If water
increases the risk, add - never use water).
S 45 In case of accident or if you feel unwell, seek
medical advice immediately (show the label where
possible).
WGK (Water Danger/Protection)
CAS# 7446-08-4: 2
United Kingdom Occupational Exposure Limits
CAS# 7446-08-4: OES-United Kingdom, TWA (listed as ** undefined
**): as Se: 0.1 mg/m3 TWA; (does not include hydrogen selenide)
Canada
CAS# 7446-08-4 is listed on Canadas DSL List.
CAS# 7446-08-4 is listed on Canadas Ingredient Disclosure List.
Exposure Limits
CAS# 7446-08-4: OEL-ARAB Republic of Egypt:TWA 0.2 mg(Se)/m3
OEL-AUSTRALIA:TWA 0.2 mg(Se)/m3
OEL-BELGIUM:TWA 0.2 mg(Se)/m3
OEL-DENMARK:TWA 0.1 mg(Se)/m3
OEL-FINLAND:TWA 0.1 mg(Se)/m3;STEL 0.3 mg(Se)/m3
OEL-GERMANY:TWA 0.1 mg(Se)/m3
OEL-HUNGARY:STEL 0.1 mg(Se)/m3
OEL-THE NETHERLANDS:TWA 0.2 mg(Se)/m3
OEL-THE PHILIPPINES:TWA 0.2 mg(Se)/m3
OEL-POLAND:TWA 0.1 mg(Se)/m3
OEL-SWEDEN:TWA 0.1 mg(Se)/m3
OEL-SWITZERLAND:TWA 0.1 mg(Se)/m3
OEL-TURKEY:TWA 0.2 mg(Se)/m3
OEL-UNITED KINGDOM:TWA 0.1 mg(Se)/m3
OEL IN BULGARIA, COLOMBIA, JORDAN, KOREA check ACGIH TLV
OEL IN NEW ZEALAND, SINGAPORE, VIETNAM check ACGI TLV
US FEDERAL
TSCA
CAS# 7446-08-4 is listed on the TSCA inventory.
