**** SECTION 2 - COMPOSITION, INFORMATION ON INGREDIENTS ****
+----------------+--------------------------------------+----------+-----------+
| CAS# | Chemical Name | % | EINECS# |
|----------------|--------------------------------------|----------|-----------|
| 7446-08-4 |Selenium dioxide | 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.Toxic.Corrosive.
Potential Health Effects
Eye:
Causes severe eye burns. May result in corneal injury. 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. May cause vomiting, diarrhea, hemorrhage,
labored breathing, weakness, unsteady gait, and coma.
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. 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. This material in sufficient quantity and reduced
particle size is capable of creating a dust explosion. 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. Avoid generating dusty conditions. Provide ventilation.
**** SECTION 7 - HANDLING and STORAGE ****
Handling:
Wash thoroughly after handling. Use with adequate ventilation.
Minimize dust generation and accumulation. Do not get in eyes, on
skin, or on clothing. Do not ingest or inhale. Do not allow contact
with water. Use only in a chemical fume hood.
Storage:
Store in a tightly closed container. Keep under a nitrogen blanket.
Store in a cool, dry, well-ventilated area away from incompatible
substances. 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 OSHA's 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: white to light red
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.
**** 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 dioxide -
IARC: Group 3 carcinogen (listed as ** undefined **).
Other:
See actual entry in RTECS for complete information.
**** SECTION 12 - ECOLOGICAL INFORMATION ****
**** SECTION 13 - DISPOSAL CONSIDERATIONS ****
Products which are considered hazardous for supply are classified as Special
Waste and the disposal of such chemicals is covered by regulations which may
vary according to location. Contact a specialist disposal company or the local
waste regulator for advice. Empty containers must be decontaminated before
returning for recycling.
**** SECTION 14 - TRANSPORT INFORMATION ****
IATA
Shipping Name: TOXIC SOLID, INORGANIC NOS
Hazard Class: 6.1
UN Number: 3288
Packing Group: II
IMO
Shipping Name: TOXIC SOLID, INORGANIC NOS
Hazard Class: 6.1
UN Number: 3288
Packing Group: II
RID/ADR
Shipping Name: TOXIC SOLID, INORGANIC NOS
Dangerous Goods Code: 6.1
UN Number: 3288
**** 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 20/21 When using do not eat, drink or smoke.
S 28 After contact with skin, wash immediately
with...
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 Canada's DSL List.
CAS# 7446-08-4 is listed on Canada's 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.
**** SECTION 16 - ADDITIONAL INFORMATION ****
MSDS Creation Date: 9/29/1998 Revision #1 Date: 8/02/2000
The information above is believed to be accurate and represents the best
information currently available to us. However, we make no warranty of
merchantability or any other warranty, express or implied, with respect to
such information, and we assume no liability resulting from its use. Users
should make their own investigations to determine the suitability of the
information for their particular purposes. In no way shall the company be
liable for any claims, losses, or damages of any third party or for lost
profits or any special, indirect, incidental, consequential or exemplary
damages, howsoever arising, even if the company has been advised of
the possibility of such damages.
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