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DECABORANEICSC: 0712
Boron hydride
Decaboron tetradecahydride
October 1997
CAS #: 17702-41-9
UN #: 1868
EC Number: 241-711-8

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Combustible. Gives off irritating or toxic fumes (or gases) in a fire.  Above 80°C explosive vapour/air mixtures may be formed. Finely dispersed particles form explosive mixtures in air.  NO open flames. NO contact with halogenated compounds or oxidizing agents.  Above 80°C use a closed system, ventilation and explosion-proof electrical equipment.  Use special powder, dry sand. NO other agents.  In case of fire: keep cylinder cool by spraying with water. NO direct contact with water. 

 PREVENT DISPERSION OF DUST! STRICT HYGIENE!  
  SYMPTOMS PREVENTION FIRST AID
Inhalation Cough. Dizziness. Drowsiness. Headache. Sweating. Nausea. Sore throat. Weakness. Tremor. Incoordination. Symptoms may be delayed. See Notes.  Use ventilation (not if powder), local exhaust or breathing protection.  Fresh air, rest. Refer for medical attention. 
Skin MAY BE ABSORBED! Redness. See Inhalation.  Protective gloves. Protective clothing.  Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention . 
Eyes Redness.  Wear face shield.  First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. 
Ingestion See Inhalation.  Do not eat, drink, or smoke during work. Wash hands before eating.  Induce vomiting (ONLY IN CONSCIOUS PERSONS!). Refer for medical attention . 

SPILLAGE DISPOSAL CLASSIFICATION & LABELLING
Personal protection: complete protective clothing including self-contained breathing apparatus. Sweep spilled substance into covered containers. If appropriate, moisten first to prevent dusting. Carefully collect remainder. Then store and dispose of according to local regulations. 

According to UN GHS Criteria

 

Transportation
UN Classification
UN Hazard Class: 4.1; UN Subsidiary Risks: 6.1; UN Pack Group: II 

STORAGE
Fireproof. Separated from food and feedstuffs, halogens and oxidants. Cool. Dry. 
PACKAGING
Do not transport with food and feedstuffs. 
DECABORANE ICSC: 0712
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS-TO-WHITE CRYSTALS WITH PUNGENT ODOUR. 

Physical dangers
Dust explosion possible if in powder or granular form, mixed with air. 

Chemical dangers
May explode on heating or on contact with flames. Decomposes slowly at 300°C. This produces boron and flammable gas (hydrogen - see ICSC 0001). Decomposes on burning. This produces toxic fumes of boron oxides. Reacts slowly with halogenated materials and ethers. This produces impact-sensitive materials. Reacts explosively with oxidants. Reacts with water and moisture. This produces flammable gas (hydrogen - see ICSC 0001). Attacks natural rubber, some synthetic rubbers, some greases and some lubricants. 

Formula: B10H14
Molecular mass: 122.2
Boiling point: 213°C
Melting point: 99.6°C
Relative density (water = 1): 0.9
Solubility in water: slightly soluble in cold water, hydrolyzes in hot water
Vapour pressure, Pa at 25°C: 6.65
Relative vapour density (air = 1): 4.2 (at boiling point)
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.00
Flash point: 80°C c.c.
Auto-ignition temperature: 149°C
Explosive limits, vol% in air: see Notes 


EXPOSURE & HEALTH EFFECTS

Routes of exposure
The substance can be absorbed into the body by inhalation of its aerosol, through the skin and by ingestion. 

Effects of short-term exposure
The aerosol is irritating to the eyes, skin and respiratory tract. The substance may cause effects on the central nervous system. This may result in fatigue, hyperexcitability and narcosis. The effects may be delayed. 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
The substance may have effects on the central nervous system. This may result in fatigue, inability to concentrate and lack of coordination. 


OCCUPATIONAL EXPOSURE LIMITS
TLV: 0.05 ppm as TWA; 0.15 ppm as STEL; (skin).
MAK: 0.25 mg/m3, 0.05 ppm; peak limitation category: II(2); skin absorption (H) 

ENVIRONMENT
 

NOTES
The onset of symtoms is frequently delayed for 24 to 48 hours after exposure.
Explosive limits are unknown in the literature.
Reacts violently with fire extinguishing agents such as halons.
The odour warning when the exposure limit value is exceeded is insufficient.
Do NOT take working clothes home. 

ADDITIONAL INFORMATION
  EC Classification
 

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    See Also:
       Toxicological Abbreviations