ICSC 1494 - tert-OCTYL MERCAPTAN

[List of Chemicals] [Risk Notes] [Risk Phrases] [Safety Phrases] [Danger Symbols]

tert-OCTYL MERCAPTAN

ICSC: 1494
_{November 2003}

2,4,4-Trimethyl-2-pentanethiol
tert-Octanethiol
2-Methyl-2-heptanethiol

CAS No: 141-59-3
RTECS No: SA3260000
UN No: 3023

C₈H₁₈S / (CH₃)₂CSHCH₂C(CH₃)₃
Molecular mass: 146.3

TYPES OF HAZARD / EXPOSURE	ACUTE HAZARDS / SYMPTOMS	PREVENTION	FIRE FIGHTING
FIRE	Flammable. Gives off irritating or toxic fumes (or gases) in a fire.	NO open flames, NO sparks, and NO smoking.	Powder, carbon dioxide, foam.
EXPLOSION	Above 46°C explosive vapour/air mixtures may be formed.	Above 46°C use a closed system, ventilation, and explosion-proof electrical equipment.	In case of fire: keep drums, etc., cool by spraying with water.

EXPOSURE		STRICT HYGIENE!
Inhalation	Headache. Nausea. Vomiting. Dizziness. Unconsciousness.	Ventilation, local exhaust, or breathing protection.	Fresh air, rest. Artificial respiration may be needed. Refer for medical attention.
Skin		Protective gloves.	Remove contaminated clothes. Rinse and then wash skin with water and soap.
Eyes	Redness.	Safety goggles, or eye protection in combination with breathing protection.	First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
Ingestion	(See Inhalation).	Do not eat, drink, or smoke during work. Wash hands before eating.	Rinse mouth. Induce vomiting (ONLY IN CONSCIOUS PERSONS!). Refer for medical attention.

SPILLAGE DISPOSAL	PACKAGING & LABELLING
Collect leaking and spilled liquid in sealable containers as far as possible. Absorb remaining liquid in sand or inert absorbent and remove to safe place. (Extra personal protection: chemical protection suit including self-contained breathing apparatus.)	UN Hazard Class: 6.1 UN Subsidiary Risks: 3 UN Pack Group: I

EMERGENCY RESPONSE	STORAGE
NFPA Code: H2; F2; R0; Transport Emergency Card: TEC (R)-61GTF1-I	Fireproof. Separated from strong bases, strong acids and oxidants.

IMPORTANT DATA

Physical State; Appearance
COLOURLESS LIQUID, WITH CHARACTERISTIC ODOUR.

Chemical dangers
The substance decomposes on burning producing toxic gases including hydrogen sulfide and sulfur oxides. Reacts violently with oxidants causing fire hazard. Reacts with strong acids, strong bases and strong reducing agents. Attacks many metals and rubber.

Occupational exposure limits
TLV not established.
MAK not established.

Routes of exposure
The substance can be absorbed into the body by inhalation, through the skin and by ingestion.

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 mildly irritating to the eyes. The substance may cause effects on the central nervous system, resulting in convulsions, lowering of consciousness and respiratory depression. Exposure may result in death.

PHYSICAL PROPERTIES	ENVIRONMENTAL DATA
Boiling point: 155°C Melting point: -74°C Relative density (water = 1): 0.85 Solubility in water: none Relative vapour density (air = 1): 5.0 Flash point: 46°C o.c. Explosive limits, vol% in air: 0.8-?

NOTES

Environmental effects from the substance have not been investigated.

IPCS
International
Programme on
Chemical Safety

Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2003

LEGAL NOTICE

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: 23.01.2004