1: Chemical Product and Company Identification
Name: Selenious acid
Name: Selenium dioxide
2: Composition and Information on Ingredients
% by Weight
Data on Ingredients: Selenious
acid LD50: Not available. LC50: Not available.
3: Hazards Identification
Acute Health Effects:
hazardous in case of skin contact (permeator), of ingestion, of inhalation.
Hazardous in case of skin contact (irritant), of eye contact (irritant). Severe
over-exposure can result in death.
Chronic Health Effects:
EFFECTS: Not available. MUTAGENIC EFFECTS: Not available. TERATOGENIC EFFECTS:
Not available. DEVELOPMENTAL TOXICITY: Not available. Repeated exposure to an
highly toxic material may produce general deterioration of health by an
accumulation in one or many human organs.
4: First Aid Measures
for and remove any contact lenses. Immediately flush eyes with running water for
at least 15 minutes, keeping eyelids open. Cold water may be used. Do not use an
eye ointment. Seek medical attention.
contact with skin, wash immediately with plenty of water. Gently and thoroughly
wash the contaminated skin with running water and non-abrasive soap. Be
particularly careful to clean folds, crevices, creases and groin. Cold water may
be used. Cover the irritated skin with an emollient. If irritation persists,
seek medical attention. Wash contaminated clothing before reusing.
with a disinfectant soap and cover the contaminated skin with an anti-bacterial
cream. Seek immediate medical attention.
Allow the victim to rest
in a well ventilated area. Seek immediate medical attention.
the victim to a safe area as soon as possible. Loosen tight clothing such as a
collar, tie, belt or waistband. If breathing is difficult, administer oxygen. If
the victim is not breathing, perform mouth-to-mouth resuscitation. WARNING: It
may be hazardous to the person providing aid to give mouth-to-mouth
resuscitation when the inhaled material is toxic, infectious or corrosive. Seek
immediate medical attention.
not induce vomiting. Examine the lips and mouth to ascertain whether the tissues
are damaged, a possible indication that the toxic material was ingested; the
absence of such signs, however, is not conclusive. Loosen tight clothing such as
a collar, tie, belt or waistband. If the victim is not breathing, perform
mouth-to-mouth resuscitation. Seek immediate medical attention.
Ingestion: Not available.
5: Fire and Explosion Data
of the Product: Non-flammable.
Points: Not applicable.
Limits: Not applicable.
of Combustion: Not
Hazards in Presence of Various Substances: Not
Hazards in Presence of Various Substances:
of explosion of the product in presence of mechanical impact: Not available.
Risks of explosion of the product in presence of static discharge: Not
Fighting Media and Instructions: Not
Remarks on Fire Hazards: Dangerous
in contact with organic materials. When heated to decomposition it emits toxic
Remarks on Explosion Hazards: Not
6: Accidental Release Measures
Spill: Use appropriate
tools to put the spilled solid in a convenient waste disposal container.
a shovel to put the material into a convenient waste disposal container. Be
careful that the product is not present at a concentration level above TLV.
Check TLV on the MSDS and with local authorities.
7: Handling and Storage
locked up Do not ingest. Do not breathe dust. Wear suitable protective clothing
In case of insufficient ventilation, wear suitable respiratory equipment If
ingested, seek medical advice immediately and show the container or the label.
Avoid contact with skin and eyes Keep away from incompatibles such as reducing
container tightly closed. Keep in a cool, well-ventilated place. Highly toxic or
infectious materials should be stored in a separate locked safety storage
cabinet or room.
8: Exposure Controls/Personal Protection
process enclosures, local exhaust ventilation, or other engineering controls to
keep airborne levels below recommended exposure limits. If user operations
generate dust, fume or mist, use ventilation to keep exposure to airborne
contaminants below the exposure limit.
goggles. Lab coat. Dust respirator. Be sure to use an approved/certified
respirator or equivalent. Gloves.
Protection in Case of a Large Spill:
goggles. Full suit. Dust respirator. Boots. Gloves. A self contained breathing
apparatus should be used to avoid inhalation of the product. Suggested
protective clothing might not be sufficient; consult a specialist BEFORE
handling this product.
0.04 (ppm) Consult local authorities for acceptable exposure limits.
9: Physical and Chemical Properties
state and appearance: Solid.
(Deliquescent crystals solid.)
Weight: 128.98 g/mole
(1% soln/water): 7
Point: 70°C (158°F)
Gravity: 3 (Water = 1)
Pressure: Not applicable.
Density: Not available.
Threshold: Not available.
Dist. Coeff.: Not
(in Water): Not available.
Properties: See solubility
in water, methanol.
soluble in cold water, hot water, methanol. Insoluble in diethyl ether,
10: Stability and Reactivity Data
The product is stable.
of Instability: Not
with various substances: Reactive
with reducing agents.
Non-corrosive in presence
Remarks on Reactivity: Incompatible
Remarks on Corrosivity: Not
11: Toxicological Information
of Entry: Dermal contact.
Eye contact. Inhalation. Ingestion.
Not available. LC50: Not available.
Effects on Humans: Not
Toxic Effects on Humans:
hazardous in case of skin contact (permeator), of ingestion, of inhalation.
Hazardous in case of skin contact (irritant).
Remarks on Toxicity to Animals: Not
Remarks on Chronic Effects on Humans: Not
Remarks on other Toxic Effects on Humans: Material
is irritating to mucous membranes and upper respiratory tract.
12: Ecological Information
and COD: Not available.
hazardous short term degradation products are not likely. However, long term
degradation products may arise.
of the Products of Biodegradation: The
products of degradation are more toxic.
Remarks on the Products of Biodegradation: Not
13: Disposal Considerations
14: Transport Information
Classification: CLASS 6.1:
: Selenium compound,
n.o.s. (Selenious acid) : UN3283 PG: III
Provisions for Transport: Not
15: Other Regulatory Information
and State Regulations:
RTK: Selenious acid Florida: Selenious acid Massachusetts RTK: Selenious acid
New Jersey: Selenious acid
8(b) inventory: Selenious acid SARA 302/304/311/312 extremely hazardous
substances: Selenious acid CERCLA: Hazardous substances.: Selenious acid
Hazardous by definition of Hazard Communication Standard (29 CFR 1910.1200).
(Canada): CLASS D-1B:
Material causing immediate and serious toxic effects (TOXIC).
(EEC): R36/38- Irritating
to eyes and skin.
Fire Protection Association (U.S.A.):
Lab coat. Dust respirator. Be sure to use an approved/certified respirator or
equivalent. Wear appropriate respirator when ventilation is inadequate. Splash
NILE CEHMCIALS provides the information contained herein
in good faith but makes no representation as to its comprehensiveness or
accuracy. This document is intended only as a guide to the appropriate
precautionary handling of the material by a properly trained person using this
product. Individuals receiving the information must exercise their independent
judgment in determining its appropriateness for a particular purpose. NILE
CHEMICALS MAKES NO REPRESENTATIONS OR WARRANTIES, EITHER EXPRESS OR IMPLIED,
INCLUDING WITHOUT LIMITATION ANY WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
PARTICULAR PURPOSE WITH RESPECT TO THE INFORMATION SET FORTH HEREIN OR THE
PRODUCT TO WHICH THE INFORMATION REFERS. ACCORDINGLY, NILE CHEMICALS WILL NOT BE
RESPONSIBLE FOR DAMAGES RESULTING FROM USE OF OR RELIANCE UPON THIS INFORMATION.
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