ICSC 1621 - 1-UNDECANETHIOL

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1-UNDECANETHIOL	ICSC: 1621 (April 2006)
n-Undecyl mercaptan Undecyl mercaptan Undecanethiol

CAS #: 5332-52-5

	ACUTE HAZARDS	PREVENTION	FIRE FIGHTING
FIRE & EXPLOSION	Combustible. Gives off irritating or toxic fumes (or gases) in a fire.	NO open flames.	Use water spray, powder, alcohol-resistant foam, carbon dioxide.


	SYMPTOMS	PREVENTION	FIRST AID
Inhalation	Cough. Sore throat. Headache. Nausea.	Use ventilation.	Fresh air, rest.
Skin	Redness.	Protective gloves.	Remove contaminated clothes. Rinse and then wash skin with water and soap.
Eyes	Redness.	Wear safety spectacles.	First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention.
Ingestion	Headache. Nausea. Vomiting.	Do not eat, drink, or smoke during work.	Give one or two glasses of water to drink.

SPILLAGE DISPOSAL	CLASSIFICATION & LABELLING
Personal protection: filter respirator for organic gases and vapours adapted to the airborne concentration of the substance. Collect leaking and spilled liquid in sealable containers as far as possible. Absorb remaining liquid in sand or inert absorbent. Then store and dispose of according to local regulations.	According to UN GHS Criteria Transportation UN Classification
STORAGE
Separated from strong oxidants, strong bases, strong acids and strong reducing agents.
PACKAGING

1-UNDECANETHIOL

ICSC: 1621

PHYSICAL & CHEMICAL INFORMATION
Physical State; Appearance LIQUID WITH CHARACTERISTIC ODOUR. Physical dangers The vapour is heavier than air and may travel along the ground; distant ignition possible. Chemical dangers Reacts violently with oxidants, reducing agents, strong acids and strong bases. Decomposes on heating. This produces toxic and corrosive fumes including hydrogen sulfide and sulfur oxides.	Formula: C₁₁H₂₄S / CH₃(CH₂)₁₀SH Molecular mass: 188.4 Boiling point: 257-259°C Melting point: -3°C Relative density (water = 1): 0.84 Solubility in water: none Flash point: 109°C Explosive limits, vol% in air: 0.6-?

PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
LIQUID WITH CHARACTERISTIC ODOUR.

Physical dangers
The vapour is heavier than air and may travel along the ground; distant ignition possible.

Chemical dangers
Reacts violently with oxidants, reducing agents, strong acids and strong bases. Decomposes on heating. This produces toxic and corrosive fumes including hydrogen sulfide and sulfur oxides.

Formula: C₁₁H₂₄S / CH₃(CH₂)₁₀SH
Molecular mass: 188.4
Boiling point: 257-259°C
Melting point: -3°C
Relative density (water = 1): 0.84
Solubility in water: none
Flash point: 109°C
Explosive limits, vol% in air: 0.6-?

EXPOSURE & HEALTH EFFECTS
Routes of exposure Effects of short-term exposure The substance is irritating to the eyes, skin and respiratory tract.	Inhalation risk No indication can be given about the rate at which a harmful concentration of this substance in the air is reached on evaporation at 20°C. Effects of long-term or repeated exposure

EXPOSURE & HEALTH EFFECTS

Routes of exposure

Effects of short-term exposure
The substance is irritating to the eyes, skin and respiratory tract.

Inhalation risk
No indication can be given about the rate at which a harmful concentration of this substance in the air is reached on evaporation at 20°C.

Effects of long-term or repeated exposure

OCCUPATIONAL EXPOSURE LIMITS

ENVIRONMENT
Environmental effects from the substance have not been investigated adequately.

NOTES
Health effects of exposure to the substance have not been investigated adequately. See ICSC 0042.

ADDITIONAL INFORMATION

EC Classification

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