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SELENIUM OXYCHLORIDEICSC: 0948
March 2000
CAS #: 7791-23-3Selenium chloride oxide
Seleninyl chloride
UN #: 2879
EINECS #: 232-244-0

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Not combustible. Gives off irritating or toxic fumes (or gases) in a fire.        In case of fire in the surroundings, use appropriate extinguishing media.   

 STRICT HYGIENE!  
  SYMPTOMS ACUTE HAZARDS FIRST AID
Inhalation Burning sensation. Cough. Laboured breathing. Sore throat. Shortness of breath. Symptoms may be delayed. See Notes.  Use ventilation, local exhaust or breathing protection.  Fresh air, rest. Half-upright position. Artificial respiration may be needed. Refer for medical attention. 
Skin Redness. Pain. Blisters. Skin burns.  Protective gloves. Protective clothing.  Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention . 
Eyes Redness. Pain. Severe deep burns.  Wear face shield or eye protection in combination with breathing protection.  First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. 
Ingestion Burning sensation. Sore throat. Nausea. Abdominal cramps. Vomiting. Abdominal pain. Diarrhoea. Shock or collapse.  Do not eat, drink, or smoke during work. Wash hands before eating.  Rinse mouth. Do NOT induce vomiting. Refer for medical attention . 

SPILLAGE DISPOSAL CLASSIFICATION & LABELLING
Ventilation. Collect leaking and spilled liquid in sealable containers as far as possible. Absorb remaining liquid in dry sand or inert absorbent. Then store and dispose of according to local regulations. Personal protection: complete protective clothing including self-contained breathing apparatus. 

According to UN GHS Criteria

 

Transportation
UN Classification
UN Hazard Class: 8; UN Subsidiary Risks: 6.1; UN Pack Group: I 

STORAGE
Separated from metal oxides, strong bases and food and feedstuffs. Dry. Ventilation along the floor. 
PACKAGING
Do not transport with food and feedstuffs. 
SELENIUM OXYCHLORIDE ICSC: 0948
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
YELLOWISH OR COLOURLESS LIQUID. 

Physical dangers
 

Chemical dangers
Decomposes on heating. This produces toxic and corrosive fumes. Reacts with water. This produces heat and corrosive fumes. The solution in water is a strong acid. It reacts violently with bases and is corrosive. 

Formula: SeOCl2
Molecular mass: 165.9
Boiling point: 176.4°C
Melting point: 8.5°C
Relative density (water = 1): 2.42
Solubility in water: reaction
Vapour pressure, Pa at 34.8°C: 132  


EXPOSURE & HEALTH EFFECTS

Routes of exposure
The substance can be absorbed into the body by inhalation of its vapour and by ingestion. 

Effects of short-term exposure
The substance is corrosive to the eyes, skin and respiratory tract. Inhalation of the vapour may cause lung oedema. See Notes. Medical observation is indicated. 

Inhalation risk
A harmful contamination of the air can be reached rather quickly on evaporation of this substance at 20°C. 

Effects of long-term or repeated exposure
Repeated or prolonged contact may cause skin sensitization. The substance may have effects on the respiratory tract, gastrointestinal tract, central nervous system and liver. This may result in nasal irritation, persistent garlic odour, stomach pain, nervousness and liver impairment. 


Occupational exposure limits
TLV: 0.2 mg/m3, ppm, as TWA.
MAK: (as Se, inhalable fraction): 0.02 mg/m3; peak limitation category: II(8); skin absorption (H); carcinogen category: 3B; pregnancy risk group: C 

ENVIRONMENT
The substance is harmful to aquatic organisms. 

NOTES
The symptoms of lung oedema often do not become manifest until a few hours have passed and they are aggravated by physical effort.
Rest and medical observation is therefore essential.
Immediate administration of an appropriate inhalation therapy by a doctor or a person authorized by him/her, should be considered.
Do NOT take working clothes home. 

ADDITIONAL INFORMATION
  EC Classification
Symbol: T, N; R: 23/25-33-50/53; S: (1/2)-20/21-28-45-60-61; Note: A 

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    See Also:
       Toxicological Abbreviations