**** SECTION 2 - COMPOSITION, INFORMATION ON INGREDIENTS ****
+----------------+--------------------------------------+----------+-----------+
| CAS# | Chemical Name | % | EINECS# |
|----------------|--------------------------------------|----------|-----------|
| 7783-00-8 |SELENIOUS ACID | 98 | 231-974-7 |
+----------------+--------------------------------------+----------+-----------+
Hazard Symbols: T
Risk Phrases: 23/25 33
**** SECTION 3 - HAZARDS IDENTIFICATION ****
EMERGENCY OVERVIEW
Toxic by inhalation and if swallowed. Danger of cumulative
effects.Hygroscopic.
Potential Health Effects
Eye:
May cause severe eye irritation. May result in corneal injury.
Skin:
May cause severe skin irritation. Prolonged and/or repeated contact
may cause irritation and/or dermatitis.
Ingestion:
May be fatal if swallowed. May cause severe gastrointestinal tract
irritation with nausea, vomiting and possible burns. May cause liver
and kidney damage.
Inhalation:
May cause severe irritation of the respiratory tract with sore
throat, coughing, shortness of breath and delayed lung edema.
Chronic:
Prolonged or repeated skin contact may cause dermatitis. May cause
liver and kidney damage. May cause reproductive and fetal effects.
Chronic exposure to selenium may cause central nervous system
effects, digestive tract disturbances, pallor, garlic breath,
**** SECTION 4 - FIRST AID MEASURES ****
Eyes:
Immediately flush eyes with plenty of water for at least 15 minutes,
occasionally lifting the upper and lower eyelids. Get medical aid
immediately.
Skin:
Get medical aid immediately. Immediately flush skin with plenty of
soap and water for at least 15 minutes while removing contaminated
clothing and shoes.
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. During a fire, irritating and highly toxic gases
may be generated by thermal decomposition or combustion.
Extinguishing Media:
For small fires, use dry chemical, carbon dioxide, water spray or
alcohol-resistant foam.
**** 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.
**** SECTION 7 - HANDLING and STORAGE ****
Handling:
Wash thoroughly after handling. Wash hands before eating. Remove
contaminated clothing and wash before reuse. Use with adequate
ventilation. Do not get in eyes, on skin, or on clothing. Do not
ingest or inhale. Use only in a chemical fume hood.
Storage:
Store in a cool, dry place. Store in a tightly closed container.
Poison room locked.
**** 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: colourless
Odor: Not available.
pH: Not available.
Vapor Pressure: 2.7 mbar @ 15 deg C
Viscosity: Not available.
Boiling Point: Not available.
Freezing/Melting Point: 70 deg C dec
Autoignition Temperature: Not available.
Flash Point: Not available.
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature:
Solubility in water: 167 G/100ML WATER (20C)
Specific Gravity/Density:
Molecular Formula: H2O3Se
Molecular Weight: 128.97
**** SECTION 10 - STABILITY AND REACTIVITY ****
Chemical Stability:
Stable.
Conditions to Avoid:
Incompatible materials, exposure to moist air or water.
Incompatibilities with Other Materials:
Strong reducing agents - organic materials - finely powdered metals.
Hazardous Decomposition Products:
Selenium/selenium oxides.
Hazardous Polymerization: Will not occur.
**** SECTION 11 - TOXICOLOGICAL INFORMATION ****
RTECS#:
CAS# 7783-00-8: VS7175000
LD50/LC50:
Not available.
Carcinogenicity:
SELENIOUS ACID -
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: II
IMO
Shipping Name: SELENIUM COMPOUND, N.O.S.
Hazard Class: 6.1
UN Number: 3283
Packing Group: II
RID/ADR
Shipping Name: SELENIUM COMPOUND, N.O.S.
Dangerous Goods Code: 6.1(55B)
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 20/21 When using do not eat, drink or smoke.
S 28A After contact with skin, wash immediately with
plenty of 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# 7783-00-8: No information available.
United Kingdom Occupational Exposure Limits
CAS# 7783-00-8: OES-United Kingdom, TWA (listed as ** undefined
**): as Se: 0.1 mg/m3 TWA; (does not include hydrogen selenide)
Canada
CAS# 7783-00-8 is listed on Canada's DSL List.
CAS# 7783-00-8 is listed on Canada's Ingredient Disclosure List.
Exposure Limits
CAS# 7783-00-8: 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# 7783-00-8 is listed on the TSCA inventory.
**** SECTION 16 - ADDITIONAL INFORMATION ****
MSDS Creation Date: 9/02/1997 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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