ICSC 1722 - 1,3-PENTADIENE

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1,3-PENTADIENE	ICSC: 1722 (November 2008)
Penta-1,3-diene 1-Methylbutadiene Piperylene

CAS #: 504-60-9

UN #: 3295

EC Number: 207-995-2

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

PREVENT GENERATION OF MISTS!
	SYMPTOMS	PREVENTION	FIRST AID
Inhalation		Use ventilation.	Fresh air, rest. Seek medical attention if you feel unwell.
Skin	Redness.	Protective gloves.	Remove contaminated clothes. Rinse and then wash skin with water and soap. Refer for medical attention if skin irritation occurs.
Eyes	Redness.	Wear safety spectacles.	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. Seek medical attention if you feel unwell.

SPILLAGE DISPOSAL	CLASSIFICATION & LABELLING
Remove all ignition sources. Evacuate danger area! Consult an expert! Personal protection: filter respirator for organic gases and vapours adapted to the airborne concentration of the substance. Ventilation. Collect leaking liquid in covered containers. 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 Highly flammable liquid and vapour May be harmful if swallowed or if inhaled Causes mild skin irritation Causes eye irritation May be harmful if swallowed and enters airways Transportation UN Classification UN Hazard Class: 3; UN Pack Group: II
STORAGE
Separated from strong oxidants. Fireproof. Store in an area without drain or sewer access. Ventilation along the floor.
PACKAGING

1,3-PENTADIENE

ICSC: 1722

PHYSICAL & CHEMICAL INFORMATION
Physical State; Appearance COLOURLESS LIQUID. Physical dangers The vapour is heavier than air and may travel along the ground; distant ignition possible. Chemical dangers Reacts violently with strong oxidants. Can form peroxides which may initiate a polymerisation reaction.	Formula: CH₂(CH)₃CH₃ Molecular mass: 68.1 Boiling point: 42°C Melting point: -87°C Density: 0.7 g/cm³ Solubility in water, g/100ml: 0.069 (very poor) Vapour pressure, kPa at 25°C: 53.3 Relative vapour density (air = 1): 2.35 Relative density of the vapour/air-mixture at 20°C (air = 1): 1.7 Flash point: -28°C c.c. Explosive limits, vol% in air: 2.0 - 8.3 Octanol/water partition coefficient as log Pow: 1.5 (estimated)

PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS LIQUID.

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

Chemical dangers
Reacts violently with strong oxidants. Can form peroxides which may initiate a polymerisation reaction.

Formula: CH₂(CH)₃CH₃
Molecular mass: 68.1
Boiling point: 42°C
Melting point: -87°C
Density: 0.7 g/cm³
Solubility in water, g/100ml: 0.069 (very poor)
Vapour pressure, kPa at 25°C: 53.3
Relative vapour density (air = 1): 2.35
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.7
Flash point: -28°C c.c.
Explosive limits, vol% in air: 2.0 - 8.3
Octanol/water partition coefficient as log Pow: 1.5 (estimated)

EXPOSURE & HEALTH EFFECTS
Routes of exposure The substance can be absorbed into the body by inhalation. Effects of short-term exposure The vapour is irritating to the eyes and skin. If swallowed the substance may cause vomiting and could result in aspiration pneumonitis. The effects may be delayed.	Inhalation risk A harmful contamination of the air will not or will only very slowly be reached 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.

Effects of short-term exposure
The vapour is irritating to the eyes and skin. If swallowed the substance may cause vomiting and could result in aspiration pneumonitis. The effects may be delayed.

Inhalation risk
A harmful contamination of the air will not or will only very slowly be reached on evaporation of this substance at 20°C.

Effects of long-term or repeated exposure

OCCUPATIONAL EXPOSURE LIMITS

ENVIRONMENT

NOTES
The commercial mixture of 1,3-pentadiene consists of 80% of the trans-isomer (CAS 2004-70-8) and 20% of the cis-isomer (CAS 1574-41-0). CAS 504-60-9 is for unspecified or mixed isomer. Do NOT take working clothes home.

ADDITIONAL INFORMATION

EC Classification

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