**** SECTION 2 - COMPOSITION, INFORMATION ON INGREDIENTS ****
+----------------+--------------------------------------+----------+-----------+
| CAS# | Chemical Name | % | EINECS# |
|----------------|--------------------------------------|----------|-----------|
| 7783-00-8 |Selenious acid | 98 | 231-974-7 |
+----------------+--------------------------------------+----------+-----------+
Hazard Symbols: T N
Risk Phrases: 23/25 33 50/53
**** SECTION 3 - HAZARDS IDENTIFICATION ****
EMERGENCY OVERVIEW
Toxic by inhalation and if swallowed. Danger of cumulative effects.
Very toxic to aquatic organisms, may cause long-term adverse effects
in the aquatic environment.Hygroscopic (absorbs moisture from the
air).
Potential Health Effects
Eye:
May cause severe eye irritation. May result in corneal injury.
Skin:
May cause severe skin irritation. May be absorbed through the skin
in harmful amounts. Prolonged and/or repeated contact may cause
irritation and/or dermatitis.
Ingestion:
May be fatal if swallowed. May cause liver and kidney damage. May
cause burns to the digestive tract.
Inhalation:
May be fatal if inhaled. May cause severe irritation of the
respiratory tract with sore throat, coughing, shortness of breath
and delayed lung edema.
Chronic:
Symptoms demonstrated by humans suffering from chronic selenium
intoxication, selenosis, include depression, languor, nervousness,
dermatitis, gastrointestinal disturbances, giddiness, garlic odor of
the breath and sweat, moderate emotional instability, excess dental
caries, and in extreme cases, loss of fingernails and partial
alopecia (hair loss).
**** SECTION 4 - FIRST AID MEASURES ****
Eyes:
In case of contact, immediately flush eyes with plenty of water for
at least 15 minutes. Get medical aid immediately.
Skin:
In case of contact, immediately flush skin with plenty of water for
at least 15 minutes while removing contaminated clothing and shoes.
Get medical aid immediately. Wash clothing before reuse.
Ingestion:
POISON material. If swallowed, get medical aid immediately. Only
induce vomiting if directed to do so by medical personnel. Never give
anything by mouth to an unconscious person.
Inhalation:
POISON material. If inhaled, get medical aid immediately. Remove
victim to fresh air. 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.
Extinguishing Media:
Use extinguishing media most appropriate for the 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. Remove contaminated clothing and
wash before reuse. Minimize dust generation and accumulation. Do not
breathe dust, vapor, mist, or gas. Do not get in eyes, on skin, or
on clothing. Do not ingest or inhale. Use only with adequate
ventilation or respiratory protection.
Storage:
Store in a cool, dry place. Store in a tightly closed container.
Poison room locked.
**** 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 general or
local exhaust ventilation to keep airborne concentrations below the
permissible exposure limits. Use process enclosure, local exhaust
ventilation, or other engineering controls to control airborne
levels.
Exposure Limits
CAS# 7783-00-8:
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 chemical splash goggles.
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 29
CFR 1910.134 or European Standard EN 149. Use a
NIOSH/MSHA or European Standard EN 149 approved
respirator if exposure limits are exceeded or if
irritation or other symptoms are experienced.
**** SECTION 9 - PHYSICAL AND CHEMICAL PROPERTIES ****
Physical State: Powder
Color: white
Odor: Not available.
pH: Not available.
Vapor Pressure: Not available.
Viscosity: Not available.
Boiling Point: Not available.
Freezing/Melting Point: 70 deg C (dec)
Autoignition Temperature: Not applicable.
Flash Point: Not applicable.
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature: 70 deg C
Solubility in water: Readily soluble in water
Specific Gravity/Density: Not available.
Molecular Formula: H2SeO3
Molecular Weight: 128.97
**** SECTION 10 - STABILITY AND REACTIVITY ****
Chemical Stability:
Stable under normal temperatures and pressures.
Conditions to Avoid:
Dust generation, moisture, excess heat.
Incompatibilities with Other Materials:
Strong reducing agents, 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.
Oral rat LDLo: 25 mg/kg.
Carcinogenicity:
Selenious acid -
Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.
**** SECTION 12 - ECOLOGICAL INFORMATION ****
Other
No information available.
**** 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.
Hazard Class: 6.1
UN Number: 3283
Packing group: II
USA RQ: CAS# 7783-00-8: 10 lb final RQ; 4.54 kg final RQ
**** SECTION 15 - REGULATORY INFORMATION ****
European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: T N
Risk Phrases:
R 23/25 Toxic by inhalation and if swallowed.
R 33 Danger of cumulative effects.
R 50/53 Very toxic to aquatic organisms, may cause
long-term adverse effects in the aquatic environment.
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).
S 60 This material and its container must be
disposed of as hazardous waste.
S 61 Avoid release to the environment. Refer to
special instructions/safety data sheets.
WGK (Water Danger/Protection)
CAS# 7783-00-8: No information available.
Canada
CAS# 7783-00-8 is listed on Canada's DSL List.
CAS# 7783-00-8 is listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 7783-00-8 is listed on the TSCA inventory.
**** SECTION 16 - ADDITIONAL INFORMATION ****
MSDS Creation Date: 12/12/1997 Revision #3 Date: 8/18/2003
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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