ICSC 1166 - SULFUR

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SULFUR	ICSC: 1166 (November 2000)
Flowers of sulfur Flour sulfur Brimstone Sulphur

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 / 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

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 / 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.

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 suggested.

ADDITIONAL INFORMATION

EC Classification

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