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SULFURICSC: 1166
Flowers of sulfur
Flour sulfur
Brimstone
Sulphur
November 2000
CAS #: 7704-34-9
UN #: 1350
EC Number: 231-722-6

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Combustible.  Finely dispersed particles form explosive mixtures in air.  NO open flames, NO sparks and NO smoking.  Closed system, dust explosion-proof electrical equipment and lighting. Prevent deposition of dust. Prevent build-up of electrostatic charges (e.g., by grounding).  Use water spray, foam, powder, dry sand.  In case of fire: keep drums, etc., cool by spraying with water. 

 PREVENT DISPERSION OF DUST!  
  SYMPTOMS PREVENTION FIRST AID
Inhalation Burning sensation. Cough. Sore throat.  Use local exhaust or breathing protection.  Fresh air, rest. Half-upright position. Refer for medical attention. 
Skin Redness.  Protective gloves.  Remove contaminated clothes. Rinse and then wash skin with water and soap. 
Eyes Redness. Pain. Blurred vision.  Wear safety goggles.  First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. 
Ingestion Burning sensation. Diarrhoea.  Do not eat, drink, or smoke during work.  Rinse mouth. Refer for medical attention . 

SPILLAGE DISPOSAL CLASSIFICATION & LABELLING
Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Sweep spilled substance into covered containers. If appropriate, moisten first to prevent dusting. 

According to UN GHS Criteria

 

Transportation
UN Classification
UN Hazard Class: 4.1; UN Pack Group: III 

STORAGE
Fireproof. Separated from strong oxidants. 
PACKAGING
 
SULFUR ICSC: 1166
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
YELLOW SOLID IN VARIOUS FORMS. 

Physical dangers
Dust explosion possible if in powder or granular form, mixed with air. If dry, it can be charged electrostatically by swirling, pneumatic transport, pouring, etc. 

Chemical dangers
On combustion, forms toxic and corrosive gases of sulfur oxides including sulfur dioxide (see ICSC 0074). Reacts violently with strong oxidants , especially if powdered. This generates fire and explosion hazard. 

Formula: S or S8
Molecular mass: 256.5 (S_8) Atomic mass: 32.1
Boiling point: 445°C
Melting point: 120°C (amorphous)
Melting point: 107°C (r-sulfur)
Melting point: 115°C (beta-sulfur)
Density: 2.1 g/cm³
Solubility in water: none
Flash point: 160°C c.c.
Auto-ignition temperature: 232°C
Explosive limits, vol% in air: 35-1400 g/m³ 


EXPOSURE & HEALTH EFFECTS

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

Effects of short-term exposure
The substance is irritating to the eyes, skin and respiratory tract. Inhalation of the powder may cause inflammation of the nose and respiratory tract. 

Inhalation risk
Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly when dispersed. 

Effects of long-term or repeated exposure
Repeated or prolonged contact with skin may cause dermatitis. The substance may have effects on the respiratory tract. This may result in chronic bronchitis. 


OCCUPATIONAL EXPOSURE LIMITS
 

ENVIRONMENT
 

NOTES
Often transported in molten state (UN 2448; TEC(R)-115).
Molten sulfur reacts with hydrocarbons to form toxic and flammable gases.
Depending on the degree of exposure, periodic medical examination is indicated. 

ADDITIONAL INFORMATION
  EC Classification
 

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    See Also:
       Toxicological Abbreviations