ICSC 1153 - ISOPENTANE

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ISOPENTANE	ICSC: 1153 (April 2014)
Ethyl dimethyl methane 2-Methylbutane Isoamyl hydride

CAS #: 78-78-4

UN #: 1265

EC Number: 201-142-8

	ACUTE HAZARDS	PREVENTION	FIRE FIGHTING
FIRE & EXPLOSION	Extremely flammable. Heating will cause rise in pressure with risk of bursting. Vapour/air mixtures are explosive.	NO open flames, NO sparks and NO smoking. Closed system, ventilation, explosion-proof electrical equipment and lighting. Prevent build-up of electrostatic charges (e.g., by grounding). Do NOT use compressed air for filling, discharging, or handling. Use non-sparking handtools.	Use powder, carbon dioxide, alcohol-resistant foam, water spray. In case of fire: keep drums, etc., cool by spraying with water.


	SYMPTOMS	PREVENTION	FIRST AID
Inhalation	Dizziness. Drowsiness. Headache. Unconsciousness.	Use ventilation, local exhaust or breathing protection.	Fresh air, rest. Refer for medical attention.
Skin	Dry skin.	Protective gloves.	First rinse with plenty of water for at least 15 minutes, then remove contaminated clothes and rinse again.
Eyes	No acute symptoms expected.	Wear safety spectacles or eye protection in combination with breathing protection.	Rinse with plenty of water (remove contact lenses if easily possible).
Ingestion	Nausea. Vomiting. Aspiration hazard!	Do not eat, drink, or smoke during work.	Rinse mouth. Do NOT induce vomiting. Refer immediately for medical attention.

SPILLAGE DISPOSAL	CLASSIFICATION & LABELLING
Evacuate danger area! Consult an expert! Personal protection: filter respirator for organic gases and vapours of low boiling point adapted to the airborne concentration of the substance. Remove all ignition sources. Do NOT let this chemical enter the environment. 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 wash away into sewer.	According to UN GHS Criteria Extremely flammable liquid and vapour May cause drowsiness or dizziness May be fatal if swallowed and enters airways Toxic to aquatic life Transportation UN Classification UN Hazard Class: 3; UN Pack Group: I
STORAGE
Fireproof. Well closed. Separated from strong oxidants. Store in an area without drain or sewer access. Provision to contain effluent from fire extinguishing.
PACKAGING

ISOPENTANE

ICSC: 1153

PHYSICAL & CHEMICAL INFORMATION
Physical State; Appearance COLOURLESS LIQUID WITH CHARACTERISTIC ODOUR. Physical dangers The vapour is heavier than air and may travel along the ground; distant ignition possible. The vapour is heavier than air and may accumulate in lowered spaces causing a deficiency of oxygen. Chemical dangers May explode on heating. Reacts with strong oxidants. This generates fire or explosion hazard.	Formula: C₅H₁₂ / (CH₃)₂-CH-CH₂-CH₃ Molecular mass: 72.2 Boiling point: 28°C Melting point: -160°C Relative density (water = 1): 0.6 Solubility in water: none Vapour pressure, kPa at 20°C: 79 Relative vapour density (air = 1): 2.5 Relative density of the vapour/air-mixture at 20°C (air = 1): 2.2 Flash point: <-51°C c.c. Auto-ignition temperature: 420°C Explosive limits, vol% in air: 1.4-7.6 Octanol/water partition coefficient as log Pow: 2.3 Viscosity: 0.3 mm²/s at 20°C

PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS LIQUID WITH CHARACTERISTIC ODOUR.

Physical dangers
The vapour is heavier than air and may travel along the ground; distant ignition possible. The vapour is heavier than air and may accumulate in lowered spaces causing a deficiency of oxygen.

Chemical dangers
May explode on heating. Reacts with strong oxidants. This generates fire or explosion hazard.

Formula: C₅H₁₂ / (CH₃)₂-CH-CH₂-CH₃
Molecular mass: 72.2
Boiling point: 28°C
Melting point: -160°C
Relative density (water = 1): 0.6
Solubility in water: none
Vapour pressure, kPa at 20°C: 79
Relative vapour density (air = 1): 2.5
Relative density of the vapour/air-mixture at 20°C (air = 1): 2.2
Flash point: <-51°C c.c.
Auto-ignition temperature: 420°C
Explosive limits, vol% in air: 1.4-7.6
Octanol/water partition coefficient as log Pow: 2.3
Viscosity: 0.3 mm²/s at 20°C

EXPOSURE & HEALTH EFFECTS
Routes of exposure Effects of short-term exposure If swallowed the substance easily enters the airways and could result in aspiration pneumonitis. Inhalation of high concentrations of the vapour may cause depression of the central nervous system.	Inhalation risk A harmful contamination of the air can be reached rather quickly on evaporation of this substance at 20°C. Effects of long-term or repeated exposure The substance defats the skin, which may cause dryness or cracking.

EXPOSURE & HEALTH EFFECTS

Routes of exposure

Effects of short-term exposure
If swallowed the substance easily enters the airways and could result in aspiration pneumonitis. Inhalation of high concentrations of the vapour may cause depression of the central nervous system.

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

Effects of long-term or repeated exposure
The substance defats the skin, which may cause dryness or cracking.

OCCUPATIONAL EXPOSURE LIMITS
TLV: 1000 ppm as TWA. MAK: 3000 mg/m³, 1000 ppm; peak limitation category: II(2); pregnancy risk group: C. EU-OEL: 3000 mg/m³, 1000 ppm as TWA

ENVIRONMENT
The substance is toxic to aquatic organisms. It is strongly advised not to let the chemical enter into the environment.

NOTES
High concentrations in the air cause a deficiency of oxygen with the risk of unconsciousness or death. Check oxygen content before entering area.

ADDITIONAL INFORMATION

EC Classification

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