ICSC 1621 - 1-UNDECANETHIOL

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1-UNDECANETHIOL

ICSC: 1621
_{April 2006}

n-Undecyl mercaptan
Undecyl mercaptan
Undecanethiol

CAS No: 5332-52-5

C₁₁H₂₄S / CH₃(CH₂)₁₀SH
Molecular mass: 188.4

TYPES OF HAZARD / EXPOSURE	ACUTE HAZARDS / SYMPTOMS	PREVENTION	FIRST AID / FIRE FIGHTING
FIRE	Combustible. Gives off irritating or toxic fumes (or gases) in a fire.	NO open flames.	Powder, alcohol-resistant foam, water spray, carbon dioxide.
EXPLOSION

EXPOSURE
Inhalation	Cough. Sore throat. Headache. Nausea.	Ventilation.	Fresh air, rest.
Skin	Redness.	Protective gloves.	Remove contaminated clothes. Rinse and then wash skin with water and soap.
Eyes	Redness.	Safety spectacles,	First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
Ingestion	Headache. Nausea. Vomiting.	Do not eat, drink, or smoke during work.	Give one or two glasses of water to drink.

SPILLAGE DISPOSAL	PACKAGING & LABELLING
Personal protection: filter respirator for organic gases and vapours. Collect leaking liquid in sealable containers. Absorb remaining liquid in sand or inert absorbent and remove to safe place.

EMERGENCY RESPONSE	SAFE STORAGE
	Separated from strong oxidants, strong bases, strong acids and strong reducing agents

IMPORTANT DATA

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. The substance decomposes on heating producing toxic and corrosive fumes, including hydrogen sulfide and sulfur oxides.

Occupational exposure limits
TLV not established.
MAK not established.

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

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

PHYSICAL PROPERTIES	ENVIRONMENTAL DATA
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-?

NOTES

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

IPCS
International
Programme on
Chemical Safety

Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2006

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Neither the EC nor the IPCS nor any person acting on behalf of the EC or the IPCS is responsible for the use which might be made of this information.

Updated by AS. Approved by GS. Last update: 29.01.2008