**** SECTION 2 - COMPOSITION, INFORMATION ON INGREDIENTS ****
+----------------+--------------------------------------+----------+-----------+
| CAS# | Chemical Name | % | EINECS# |
|----------------|--------------------------------------|----------|-----------|
| 5117-16-8 |1,1-Dimethyl-2-Selenourea | 97 | 225-854-3 |
+----------------+--------------------------------------+----------+-----------+
Hazard Symbols: T
Risk Phrases: 23/25 33
**** SECTION 3 - HAZARDS IDENTIFICATION ****
EMERGENCY OVERVIEW
Toxic by inhalation and if swallowed. Danger of cumulative
effects.The toxicological properties of this material have not been
fully investigated.Light sensitive.Air sensitive.
Potential Health Effects
Eye:
May cause eye irritation.
Skin:
May cause skin irritation.
Ingestion:
May cause irritation of the digestive tract. Poison by ingestion.
The toxicological properties of this substance have not been fully
investigated. May cause alopecia (loss of hair). May cause pallor,
loss of appetite, nausea, vomiting, diarrhea, weakness, darkened
urine, headache, sweating, convulsions, cyanosis (bluish skin due to
deficient oxygenation of the blood), unconsciousness, respiratory
failure and death. May cause garlic smell on the breath and body.
Inhalation:
May cause respiratory tract irritation. The toxicological properties
of this substance have not been fully investigated. Toxic if inhaled.
May also cause pallor, loss of appetite, nausea, vomiting, diarrhea,
weakness, darkened urine, headache, sweating, convulsions, cyanosis
(bluish skin due to deficient oxygenation of the blood),
unconsciousness, fatigue, pulmonary edema & coma.
Chronic:
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. Chronic selenium
poisoning is characterized by loss of hair and nails, skin lesions,
and abnormalities of the nervous system.
**** 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.
Skin:
Get medical aid. Flush skin with plenty of water for at least 15
minutes while removing contaminated clothing and shoes. Wash clothing
before reuse.
Ingestion:
Never give anything by mouth to an unconscious person. Get medical
aid. Do NOT induce vomiting. If conscious and alert, rinse mouth and
drink 2-4 cupfuls of milk or water. Wash mouth out with water.
Inhalation:
Remove from exposure and move to fresh air immediately. If not
breathing, give artificial respiration. If breathing is difficult,
give oxygen. Get medical aid. Do NOT use mouth-to-mouth
resuscitation.
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. During a fire, irritating and highly toxic gases
may be generated by thermal decomposition or combustion. Use water
spray to keep fire-exposed containers cool. Containers may explode
when heated. Non-combustible, substance itself does not burn but may
decompose upon heating to produce irritating, corrosive and/or toxic
fumes.
Extinguishing Media:
Do NOT get water inside containers. For small fires, use dry
chemical, carbon dioxide, or water spray. For large fires, use water
spray, fog or regular foam. Cool containers with flooding quantities
of water until well after fire is out.
**** 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 runoff into storm sewers and ditches which lead to
waterways. Clean up spills immediately, observing precautions in the
Protective Equipment section. Avoid generating dusty conditions.
Provide ventilation. Place under an inert atmosphere.
**** SECTION 7 - HANDLING and STORAGE ****
Handling:
Wash thoroughly after handling. Use with adequate ventilation.
Minimize dust generation and accumulation. Avoid contact with eyes,
skin, and clothing. Keep container tightly closed. Avoid ingestion
and inhalation. Store protected from light. Handle under an inert
atmosphere. Store protected from air.
Storage:
Store in a tightly closed container. Keep under a nitrogen blanket.
Store in a cool, dry, well-ventilated area away from incompatible
substances. Keep refrigerated. (Store below 4C/39F.) Do not expose
to air. Store protected from light. Store under an inert atmosphere.
**** SECTION 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION ****
Engineering Controls:
Facilities storing or utilizing this material should be equipped
with an eyewash facility and a safety shower. Use adequate
ventilation to keep airborne concentrations low.
Exposure Limits
CAS# 5117-16-8:
United Kingdom, WEL - TWA: (listed as selenium compounds): 0.1 mg
TWA (except hydrogen selenide, as Se)
United Kingdom, WEL - STEL: (listed as selenium compounds): 0.3 m
STEL (except hydrogen selenide, as Se)
United States OSHA: 0.2 mg/m3 TWA (as Se) (listed under Selenium
compounds).
Belgium - TWA: (listed as selenium compounds): 0.2 mg/m3 VLE (as
Japan: (listed as selenium compounds): 0.1 mg/m3 OEL (except SeH2
SeF6, as Se)
Malaysia: (listed as selenium compounds): 0.2 mg/m3 TWA (as Se)
Netherlands: (listed as selenium compounds): 0.1 mg/m3 MAC (as Se
Spain: (listed as selenium compounds): 0.1 mg/m3 VLA-ED (except
hydrogen selenide, as Se)
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 a chemical apron. Wear appropriate protective
clothing to prevent skin exposure.
Respirators:
A NIOSH/MSHA approved air purifying dust or mist
respirator or European Standard EN 149.
**** SECTION 9 - PHYSICAL AND CHEMICAL PROPERTIES ****
Physical State: Lumps
Color: brown
Odor: none reported
pH: Not available.
Vapor Pressure: Not available.
Viscosity: Not available.
Boiling Point: Not available.
Freezing/Melting Point: 169 - 172 deg C
Autoignition Temperature: Not applicable.
Flash Point: Not applicable.
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature:
Solubility in water:
Specific Gravity/Density:
Molecular Formula: (CH3)2NC(Se)NH2
Molecular Weight: 151.07
**** SECTION 10 - STABILITY AND REACTIVITY ****
Chemical Stability:
Stable at room temperature in closed containers under normal storage
and handling conditions.
Conditions to Avoid:
Incompatible materials, light, dust generation, exposure to air,
excess heat, exposure to moist air or water.
Incompatibilities with Other Materials:
Air, strong acids, strong bases, strong oxidizing agents, strong
reducing agents.
Hazardous Decomposition Products:
Carbon monoxide, oxides of nitrogen, irritating and toxic fumes and
gases, carbon dioxide, selenium/selenium oxides.
Hazardous Polymerization: Has not been reported
**** SECTION 11 - TOXICOLOGICAL INFORMATION ****
RTECS#:
CAS# 5117-16-8 unlisted.
LD50/LC50:
Not available.
Carcinogenicity:
1,1-Dimethyl-2-Selenourea -
Not listed by ACGIH, IARC, or NTP.
**** 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.
Hazard Class: 6.1
UN Number: 3283
Packing group: III
**** 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 28A After contact with skin, wash immediately with
plenty of water.
S 37 Wear suitable gloves.
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# 5117-16-8: No information available.
Canada
CAS# 5117-16-8 is listed on Canada's NDSL List.
CAS# 5117-16-8 is not listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 5117-16-8 is listed on the TSCA inventory.
**** SECTION 16 - ADDITIONAL INFORMATION ****
MSDS Creation Date: 9/02/1997 Revision #6 Date: 3/18/2003
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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