NILE
CHEMICALS
NILE
CHEMICALS
Synonyms: Selenium oxide; selenious anhydride
CAS No.: 7446-08-4
Molecular Weight: 110.96
Chemical Formula: SeO2
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Health Rating: 3 - Severe (Poison)
Flammability Rating: 0 - None
Reactivity Rating: 1 - Slight
Contact Rating: 3 - Severe (Life)
Lab Protective Equip: GOGGLES & SHIELD; LAB COAT & APRON; VENT HOOD;
PROPER GLOVES
Storage Color Code: Blue (Health)
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Potential Health Effects
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Acute toxicity of soluble selenium compounds is high. A general tissue poison
like arsenic, presumably attacking sulfhydryl enzymes.
Inhalation:Highly toxic via inhalation. May cause severe breathing
problems that may not appear for several hours after exposure. Irritates the
upper respiratory tract. May cause headache, fever, chills.
Ingestion:Toxic. May be fatal if swallowed. May cause severe stomach
problems.
Skin Contact:May cause skin burns. May be absorbed through the skin in
toxic quantities. May cause skin rash. Prolonged contact may cause skin
sensitization.
Eye Contact:Causes eye irritation. May cause "Rose eye", an
allergy of the eyelids in which they become puffy.
Chronic Exposure:Chronic exposure may cause paleness, coated tongue,
stomach disorders, nervousness, metallic taste and garlic breath.
Aggravation of Pre-existing Conditions:Person with a history of asthma,
allergies, or known sensitization to selenium, or with a history of other
chronic respiratory disease, gastrointestinal disturbances, disorders of the
liver or kidneys, or recurrent dermatitis would be expected to be at increased
risk from exposure.
Inhalation:Remove to fresh air. If not breathing,
give artificial respiration. If breathing is difficult, give oxygen. Get medical
attention immediately.
Ingestion:Induce vomiting immediately as directed by medical personnel.
Never give anything by mouth to an unconscious person. Get medical attention
immediately.
Skin Contact:Immediately flush skin with plenty of water for at least 15
minutes while removing contaminated clothing and shoes. Get medical attention
immediately. Wash clothing before reuse. Thoroughly clean shoes before reuse.
Eye Contact:Immediately flush eyes with plenty of water for at least 15
minutes, lifting lower and upper eyelids occasionally. Get medical attention
immediately.
Fire:Not considered to be a fire hazard.
Explosion:Not considered to be an explosion hazard.
Fire Extinguishing Media:Use any means suitable for extinguishing
surrounding fire.
Special Information:In the event of a fire, wear full protective clothing
and NIOSH-approved self-contained breathing apparatus with full facepiece
operated in the pressure demand or other positive pressure mode.
Ventilate area of leak or spill. Wear appropriate personal protective equipment as specified in Section 8. Spills: Sweep up and containerize for reclamation or disposal. Vacuuming or wet sweeping may be used to avoid dust dispersal. US Regulations (CERCLA) require reporting spills and releases to soil, water and air in excess of reportable quantities.
Keep in a tightly closed container, stored in a cool, dry, ventilated area. Protect against physical damage. Isolate from incompatible substances. Protect from moisture. Wear special protective equipment (Sec. 8) for maintenance break-in or where exposures may exceed established exposure levels. Wash hands, face, forearms and neck when exiting restricted areas. Shower, dispose of outer clothing, change to clean garments at the end of the day. Avoid cross-contamination of street clothes. Wash hands before eating and do not eat, drink, or smoke in workplace. Containers of this material may be hazardous when empty since they retain product residues (dust, solids); observe all warnings and precautions listed for the product.
Airborne Exposure Limits:
-OSHA Permissible Exposure Limit (PEL):
200 ug (Se)/m3(TWA)
-ACGIH Threshold Limit Value (TLV):
200 ug(Se)/m3`(TWA)
Ventilation System:A system of local and/or general exhaust is
recommended to keep employee exposures below the Airborne Exposure Limits. Local
exhaust ventilation is generally preferred because it can control the emissions
of the contaminant at its source, preventing dispersion of it into the general
work area. Please refer to the ACGIH document, Industrial Ventilation, A
Manual of Recommended Practices, most recent edition, for details.
Personal Respirators (NIOSH Approved):If the exposure limit is exceeded
and engineering controls are not feasible, a full facepiece particulate
respirator (NIOSH type N100 filters) may be worn for up to 50 times the exposure
limit or the maximum use concentration specified by the appropriate regulatory
agency or respirator supplier, whichever is lowest. If oil particles (e.g.
lubricants, cutting fluids. glycerine, etc.) are present, use a NIOSH type R or
P filter. For emergencies or instances where the exposure levels are not known,
use a full-facepiece positive-pressure, air-supplied respirator. WARNING:
Air-purifying respirators do not protect workers in oxygen-deficient
atmospheres.
Skin Protection:Wear impervious protective clothing, including boots,
gloves, lab coat, apron or coveralls, as appropriate, to prevent skin contact.
Eye Protection:Use chemical safety goggles and/or full face shield where
dusting or splashing of solutions is possible. Maintain eye wash fountain and
quick-drench facilities in work area.
Appearance: White crystalline powder.
Odor: Vapor has a pungent sour smell.
Solubility: 28% in water @ 20C (68F).
Specific Gravity: 3.95
pH: No information found.
% Volatiles by volume @ 21C (70F): 0
Boiling Point: Not applicable.
Melting Point: 340C (644F)
Vapor Density (Air=1): No information found.
Vapor Pressure (mm Hg): 1 @ 157C (315F)
Evaporation Rate (BuAc=1): No information found.
Stability:Stable under ordinary conditions of use
and storage.
Hazardous Decomposition Products:Toxic metal fumes may form when heated
to decomposition.
Hazardous Polymerization:Will not occur.
Incompatibilities:Organic materials, phosphorous trichloride, strong
acids, ammonia.
Conditions to Avoid:Moisture and incompatibles.
Environmental Fate:No information found.
Environmental Toxicity:No information found.
Whatever cannot be saved for recovery or recycling should be handled as hazardous waste and sent to a RCRA approved waste facility. Processing, use or contamination of this product may change the waste management options. State and local disposal regulations may differ from federal disposal regulations. Dispose of container and unused contents in accordance with federal, state and local requirements.
Domestic (Land, D.O.T.)
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Proper Shipping Name: SELENIUM COMPOUND SOLID, N.O.S. (SELENIUM DIOXIDE)
Hazard Class: 6.1
UN/NA: UN3283
Packing Group: I
Information reported for product/size: 100G
International (Water, I.M.O.)
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Proper Shipping Name: SELENIUM COMPOUND SOLID, N.O.S. (SELENIUM DIOXIDE)
Hazard Class: 6.1
UN/NA: UN3283
Packing Group: I
Information reported for product/size: 100G
International (Air, I.C.A.O.)
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Proper Shipping Name: SELENIUM COMPOUND SOLID, N.O.S. (SELENIUM DIOXIDE)
Hazard Class: 6.1
UN/NA: UN3283
Packing Group: III
Information reported for product/size: 100G
Australian Hazchem Code: None allocated.
Poison Schedule: None allocated.
WHMIS:
This MSDS has been prepared according to the hazard criteria of the Controlled
Products Regulations (CPR) and the MSDS contains all of the information required
by the CPR.
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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