SELENIUM OXYCHLORIDE
CAS No.: 7791-23-3
Synonyms:
Formula: Cl2OSe
Exact Mass: 165.84900
Molecular Weight: 165.86500
PSA: 17.07000
LogP: 0.87940
SELENIUM OXYCHLORIDE 7791-23-3 MSDS
Name: Selenium (IV) Oxychloride, 97% Material Safety Data Sheet
Synonym: Selenium Chlorideoxide; Selenium Oxychloride; Seleninyl Dichloride
CAS: 7791-23-3
Section 1 - Chemical Product MSDS Name: Selenium (IV) Oxychloride, 97% Material Safety Data Sheet
Synonym: Selenium Chlorideoxide; Selenium Oxychloride; Seleninyl Dichloride
SECTION 2 - COMPOSITION, INFORMATION ON INGREDIENTS
CAS# Chemical Name content EINECS#
7791-23-3 Selenium (IV) Oxychloride 97% 232-244-0
Hazard Symbols: T
Risk Phrases: 23/25 33
SECTION 3 - HAZARDS IDENTIFICATION EMERGENCY OVERVIEW Toxic by inhalation and if swallowed. Danger of cumulative effects.Corrosive.Water-reactive. Potential Health Effects
Eye:
Causes eye burns.
Skin:
May be fatal if absorbed through the skin. Causes skin burns. May cause skin sensitization, an allergic reaction, which becomes evident upon re-exposure to this material.
Ingestion:
Poison by ingestion. May cause irritation of the digestive tract and possible burns.
Inhalation:
Causes respiratory tract irritation. May cause asthmatic attacks due to allergic sensitization of the respiratory tract. May cause pulmonary edema and severe respiratory disturbances. May cause burns to the respiratory tract. Effects of inhalation may be delayed.
Chronic:
May cause reproductive and fetal effects. 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 immediately.
Skin:
Get medical aid immediately. Flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
Ingestion:
Do NOT induce vomiting and seek IMMEDIATE MEDICAL ADVICE.
Inhalation:
Get medical aid immediately. Remove from exposure and move to fresh air immediately. If breathing is difficult, give oxygen. Do NOT use mouth-to-mouth resuscitation. If breathing has ceased apply artificial respiration using oxygen and a suitable mechanical device such as a bag and a mask.
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. Use water spray to keep fire-exposed containers cool. Will react with water to form toxic and corrosive fumes. Reacts violently with water. Vapors may be heavier than air. They can spread along the ground and collect in low or confined areas. Containers may explode when heated.
Extinguishing Media:
Use dry chemical, carbon dioxide, or alcohol-resistant foam. DO NOT USE WATER! 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:
Avoid runoff into storm sewers and ditches which lead to waterways. Clean up spills immediately, observing precautions in the Protective Equipment section. Remove all sources of ignition. Absorb spill using an absorbent, non-combustible material such as earth, sand, or vermiculite. Do not use combustible materials such as sawdust. Provide ventilation.
SECTION 7 - HANDLING and STORAGE
Handling:
Wash thoroughly after handling. Do not get in eyes, on skin, or on clothing. Do not ingest or inhale. Use only in a chemical fume hood. Wash clothing before reuse. Discard contaminated shoes.
Storage:
Store in a cool, dry place. Keep away from water. Corrosives area. Storage under a nitrogen blanket has been recommended.
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# 7791-23-3: 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 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: Liquid
Color: yellow-green
Odor: chlorine-like
pH: Not available.
Vapor Pressure: 0.05 mm Hg @20 deg.
Viscosity: Not available.
Boiling Point: 180 deg C
Freezing/Melting Point: 9 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: 2.4300g/cm3
Molecular Formula: Cl2OSe
Molecular Weight: 165.86
SECTION 10 - STABILITY AND REACTIVITY
Chemical Stability:
Stable. However, may decompose if exposed to moist air or water.
Conditions to Avoid:
Excess heat, exposure to moist air or water.
Incompatibilities with Other Materials:
Strong oxidizing agents, phosphorus.
Hazardous Decomposition Products:
Hydrogen chloride, irritating and toxic fumes and gases, selenium/selenium oxides, chloride fumes, selenious acid.
Hazardous Polymerization: Has not been reported
SECTION 11 - TOXICOLOGICAL INFORMATION RTECS#: CAS# 7791-23-3: VS7000000
LD50/LC50:
Not available. Not available.
Carcinogenicity:
Selenium (IV) Oxychloride - Not listed by ACGIH, IARC, or NTP.
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 OXYCHLORIDE
Hazard Class: 8 (6.1)
UN Number: 2879
Packing Group: I IMO
Shipping Name: SELENIUM OXYCHLORIDE
Hazard Class: 8 (6.1)
UN Number: 2879
Packing Group: I RID/ADR
Shipping Name: SELENIUM OXYCHLORIDE
Hazard Class: 8 (6.1)
UN Number: 2879
Packing group: I
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# 7791-23-3: No information available. Canada CAS# 7791-23-3 is listed on Canada's DSL List. CAS# 7791-23-3 is not listed on Canada's Ingredient Disclosure List. US FEDERAL TSCA CAS# 7791-23-3 is listed on the TSCA inventory.
SECTION 16 - ADDITIONAL INFORMATION
MSDS Creation Date: 4/05/1997 Revision #3 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.

SECTION 16 - ADDITIONAL INFORMATION
N/A

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