ICSC 1493 - n-OCTYL MERCAPTAN

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n-OCTYL MERCAPTAN	ICSC: 1493 (November 2003)
1-Octanethiol 1-Mercaptooctane 1-Octylthiol

CAS #: 111-88-6

EC Number: 203-918-1

	ACUTE HAZARDS	PREVENTION	FIRE FIGHTING
FIRE & EXPLOSION	Combustible. Gives off irritating or toxic fumes (or gases) in a fire. Above 69°C explosive vapour/air mixtures may be formed.	NO open flames. Above 69°C use a closed system and ventilation.	Use powder, carbon dioxide, foam.


	SYMPTOMS	PREVENTION	FIRST AID
Inhalation	Cough. Sore throat. Headache. Nausea. Vomiting. Dizziness.	Use ventilation, local exhaust or breathing protection.	Fresh air, rest. Refer for medical attention.
Skin	Redness.	Protective gloves.	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. Dizziness.	Do not eat, drink, or smoke during work.	Rinse mouth. Refer for medical attention .

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. Do NOT let this chemical enter the environment.	According to UN GHS Criteria Transportation UN Classification
STORAGE
Fireproof. Separated from strong bases, strong acids and oxidants.
PACKAGING

n-OCTYL MERCAPTAN

ICSC: 1493

PHYSICAL & CHEMICAL INFORMATION
Physical State; Appearance COLOURLESS LIQUID WITH CHARACTERISTIC ODOUR. Physical dangers Chemical dangers Decomposes on burning. This produces toxic gases including hydrogen sulfide and sulfur oxides. Reacts violently with oxidants. This generates fire hazard. Reacts with strong acids, strong bases and strong reducing agents. Attacks metals and rubber.	Formula: C₈H₁₈S / CH₂SH(CH₂)₆CH₃ Molecular mass: 146.3 Boiling point: 199°C Melting point: -49°C Relative density (water = 1): 0.84 Solubility in water: none Vapour pressure, kPa at 25°C: 0.06 Relative vapour density (air = 1): 5.0 Relative density of the vapour/air-mixture at 20°C (air = 1): 1 Flash point: 69°C o.c. Explosive limits, vol% in air: 0.8-? Octanol/water partition coefficient as log Pow: 4.21 (estimated)

PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS LIQUID WITH CHARACTERISTIC ODOUR.

Physical dangers

Chemical dangers
Decomposes on burning. This produces toxic gases including hydrogen sulfide and sulfur oxides. Reacts violently with oxidants. This generates fire hazard. Reacts with strong acids, strong bases and strong reducing agents. Attacks metals and rubber.

Formula: C₈H₁₈S / CH₂SH(CH₂)₆CH₃
Molecular mass: 146.3
Boiling point: 199°C
Melting point: -49°C
Relative density (water = 1): 0.84
Solubility in water: none
Vapour pressure, kPa at 25°C: 0.06
Relative vapour density (air = 1): 5.0
Relative density of the vapour/air-mixture at 20°C (air = 1): 1
Flash point: 69°C o.c.
Explosive limits, vol% in air: 0.8-?
Octanol/water partition coefficient as log Pow: 4.21 (estimated)

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 mildly irritating to the eyes, skin and respiratory tract. The substance may cause effects on the central nervous system. Exposure at high levels could cause lowering of consciousness.	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
The substance can be absorbed into the body by inhalation and by ingestion.

Effects of short-term exposure
The substance is mildly irritating to the eyes, skin and respiratory tract. The substance may cause effects on the central nervous system. Exposure at high levels could cause lowering of consciousness.

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
The substance is very toxic to aquatic organisms.

NOTES

ADDITIONAL INFORMATION

EC Classification

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