ICSC 0470 - ETHANETHIOL

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ETHANETHIOL	ICSC: 0470 (October 2004)
Ethyl mercaptan Thioethyl alcohol

CAS #: 75-08-1

UN #: 2363

EC Number: 200-837-3

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

STRICT HYGIENE!
	SYMPTOMS	PREVENTION	FIRST AID
Inhalation	Dizziness. Headache. Nausea. Vomiting. Tremor. Weakness. Unconsciousness.	Use ventilation, local exhaust or breathing protection.	Fresh air, rest. Artificial respiration may be needed. Refer for medical attention.
Skin	Redness.	Protective gloves.	Rinse skin with plenty of water or shower. Rinse skin with plenty of water or shower.
Eyes	Redness. Pain.	Wear 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 refer for medical attention.
Ingestion	See Inhalation.	Do not eat, drink, or smoke during work.	Rinse mouth. Rinse mouth. Give one or two glasses of water to drink. Do NOT induce vomiting. Refer for medical attention .

SPILLAGE DISPOSAL	CLASSIFICATION & LABELLING
Evacuate danger area! Personal protection: self-contained breathing apparatus. Do NOT wash away into sewer. Collect leaking and spilled liquid in sealable containers as far as possible.	According to UN GHS Criteria Transportation UN Classification UN Hazard Class: 3; UN Pack Group: I
STORAGE
Fireproof. Separated from strong oxidants and strong acids. Cool.
PACKAGING

ETHANETHIOL

ICSC: 0470

PHYSICAL & CHEMICAL INFORMATION
Physical State; Appearance COLOURLESS LIQUID WITH PUNGENT ODOUR. Physical dangers The vapour is heavier than air and may travel along the ground; distant ignition possible. Chemical dangers Decomposes on heating. This produces toxic fumes including hydrogen sulfide (see ICSC 0165) and sulfur oxides. The substance is a weak acid. Reacts with oxidants. This generates fire and explosion hazard. Reacts with strong acids. This produces toxic gases of hydrogen sulfide and sulfur oxides.	Formula: C₂H₅SH Molecular mass: 62.1 Boiling point: 35°C Melting point: -144.4°C Relative density (water = 1): 0.839 Solubility in water, g/100ml at 20°C: 0.68 Vapour pressure, kPa at 20°C: 58.9 Relative vapour density (air = 1): 2.14 Relative density of the vapour/air-mixture at 20°C (air = 1): 1.5 Flash point: -48.3°C Auto-ignition temperature: 299°C Explosive limits, vol% in air: 2.8-18.2 Octanol/water partition coefficient as log Pow: 1.5

PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS LIQUID WITH PUNGENT ODOUR.

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

Chemical dangers
Decomposes on heating. This produces toxic fumes including hydrogen sulfide (see ICSC 0165) and sulfur oxides. The substance is a weak acid. Reacts with oxidants. This generates fire and explosion hazard. Reacts with strong acids. This produces toxic gases of hydrogen sulfide and sulfur oxides.

Formula: C₂H₅SH
Molecular mass: 62.1
Boiling point: 35°C
Melting point: -144.4°C
Relative density (water = 1): 0.839
Solubility in water, g/100ml at 20°C: 0.68
Vapour pressure, kPa at 20°C: 58.9
Relative vapour density (air = 1): 2.14
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.5
Flash point: -48.3°C
Auto-ignition temperature: 299°C
Explosive limits, vol% in air: 2.8-18.2
Octanol/water partition coefficient as log Pow: 1.5

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 irritating to the eyes, skin and respiratory tract. The substance may cause effects on the central nervous system. This may result in lowering of consciousness and respiratory depression.	Inhalation risk A harmful contamination of the air can be reached very quickly on evaporation of this substance 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 irritating to the eyes, skin and respiratory tract. The substance may cause effects on the central nervous system. This may result in lowering of consciousness and respiratory depression.

Inhalation risk
A harmful contamination of the air can be reached very quickly on evaporation of this substance at 20°C.

Effects of long-term or repeated exposure

OCCUPATIONAL EXPOSURE LIMITS
TLV: 0.5 ppm as TWA. MAK: 1.3 mg/m³, 0.5 ppm; peak limitation category: I(1); skin absorption (H); pregnancy risk group: D

ENVIRONMENT

NOTES

ADDITIONAL INFORMATION

EC Classification
Symbol: F, Xn, N; R: 11-20-50/53; S: (2)-16-25-60-61

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