ICSC 1521 - 1-PENTANETHIOL

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1-PENTANETHIOL

ICSC: 1521
_{April 2004}

Amyl mercaptan
Pentyl mercaptan
Amyl hydrosulfide
2-Methylbutyl mercaptan

CAS No: 110-66-7
RTECS No: SA3150000
UN No: 1111

C₅H₁₂S / CH₃(CH₂)₄SH
Molecular mass: 104.2

TYPES OF HAZARD / EXPOSURE	ACUTE HAZARDS / SYMPTOMS	PREVENTION	FIRE FIGHTING
FIRE	Highly flammable. Gives off irritating or toxic fumes (or gases) in a fire.	NO open flames, NO sparks, and NO smoking.	Powder, AFFF, foam, carbon dioxide.
EXPLOSION	Vapour/air mixtures are explosive.	Closed system, ventilation, explosion-proof electrical equipment and lighting.	In case of fire: keep drums, etc., cool by spraying with water.

EXPOSURE
Inhalation	Headache. Nausea. Cough.	Ventilation, local exhaust, or breathing protection.	Fresh air, rest. Refer for medical attention.
Skin	Redness. Pain.	Protective gloves.	Remove contaminated clothes. Rinse skin with plenty of water or shower.
Eyes	Redness. Pain.	Safety spectacles.	First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
Ingestion	Burning sensation in the throat and chest. Headache. Nausea.	Do not eat, drink, or smoke during work.	Rinse mouth. Give plenty of water to drink. Do NOT induce vomiting. Refer for medical attention.

SPILLAGE DISPOSAL	PACKAGING & LABELLING
Remove all ignition sources. Cover the spilled material with absorbent material. Sweep spilled substance into sealable containers. Do NOT wash away into sewer. Personal protection: filter respirator for organic gases and vapours.	UN Hazard Class: 3 UN Pack Group: II

EMERGENCY RESPONSE	STORAGE
NFPA Code: H2; F3; R0	Fireproof.

IMPORTANT DATA

Physical State; Appearance
COLOURLESS LIQUID, WITH CHARACTERISTIC ODOUR.

Physical dangers
The vapour mixes well with air, explosive mixtures are formed easily.

Chemical dangers
The substance decomposes on burning producing toxic and corrosive fumes including hydrogen sulfide and sulfur oxides. Reacts with acids, bases and strong oxidants.

Occupational exposure limits
TLV not established.
MAK not established.

Routes of exposure
The substance can be absorbed into the body by inhalation of its aerosol.

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 at 61.3 kPa: 126.6°C Melting point: -75.7°C Relative density (water = 1): 0.84 Solubility in water: none Vapour pressure, kPa at 25°C: 1.84 Relative vapour density (air = 1): 3.6 Relative density of the vapour/air-mixture at 20°C (air = 1): 1.05 Flash point: 18°C

NOTES

Health effects of exposure to the substance have not been investigated adequately.

IPCS
International
Programme on
Chemical Safety

Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2004

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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 EC. Last update: 05.07.2004