ICSC 0533 - 2,4-PENTADIONE

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2,4-PENTADIONE	ICSC: 0533 (August 1997)
Acetyl 2-propanone Acetoacetone Acetyl acetone Pentane-2,4-dione

CAS #: 123-54-6

UN #: 2310

EC Number: 204-634-0

	ACUTE HAZARDS	PREVENTION	FIRE FIGHTING
FIRE & EXPLOSION	Flammable. Above 34°C explosive vapour/air mixtures may be formed.	NO open flames, NO sparks and NO smoking. Above 34°C use a closed system, ventilation and explosion-proof electrical equipment.	Use powder, foam, carbon dioxide. In case of fire: keep drums, etc., cool by spraying with water.

STRICT HYGIENE!
	SYMPTOMS	PREVENTION	FIRST AID
Inhalation	Incoordination. Dizziness. Drowsiness. Headache. Laboured breathing. Nausea. Vomiting. Ataxia	Use ventilation, local exhaust or breathing protection.	Fresh air, rest. Artificial respiration may be needed. Refer for medical attention.
Skin	MAY BE ABSORBED! Redness.	Protective gloves. Protective clothing.	Remove contaminated clothes. Rinse and then wash skin with water and soap.
Eyes	Redness. Pain.	Wear safety goggles or face shield.	First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention.
Ingestion	Diarrhoea. Weakness. Further see Inhalation.	Do not eat, drink, or smoke during work.	Rinse mouth. Induce vomiting (ONLY IN CONSCIOUS PERSONS!). 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. Do NOT let this chemical enter the environment. Ventilation. Collect leaking liquid in sealable containers. Wash away remainder with plenty of water.	According to UN GHS Criteria Transportation UN Classification UN Hazard Class: 3; UN Subsidiary Risks: 6.1; UN Pack Group: III
STORAGE
Fireproof. Separated from strong oxidants. Keep in the dark.
PACKAGING

2,4-PENTADIONE

ICSC: 0533

PHYSICAL & CHEMICAL INFORMATION
Physical State; Appearance COLOURLESS LIQUID WITH CHARACTERISTIC ODOUR. Physical dangers The vapour is heavier than air. Chemical dangers The substance may polymerize under the influence of light. Reacts with strong oxidants, bases and reducing agents.	Formula: C₅H₈O₂ / CH₃COCH₂COCH₃ Molecular mass: 100.13 Boiling point: 140°C Melting point: -23°C Relative density (water = 1): 0.98 Solubility in water, g/100ml: 16 Vapour pressure, kPa at 20°C: 0.93 Relative vapour density (air = 1): 3.45 Relative density of the vapour/air-mixture at 20°C (air = 1): 1.02 Flash point: 34°C c.c. Auto-ignition temperature: 340°C Explosive limits, vol% in air: 2.4-11.6

PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS LIQUID WITH CHARACTERISTIC ODOUR.

Physical dangers
The vapour is heavier than air.

Chemical dangers
The substance may polymerize under the influence of light. Reacts with strong oxidants, bases and reducing agents.

Formula: C₅H₈O₂ / CH₃COCH₂COCH₃
Molecular mass: 100.13
Boiling point: 140°C
Melting point: -23°C
Relative density (water = 1): 0.98
Solubility in water, g/100ml: 16
Vapour pressure, kPa at 20°C: 0.93
Relative vapour density (air = 1): 3.45
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.02
Flash point: 34°C c.c.
Auto-ignition temperature: 340°C
Explosive limits, vol% in air: 2.4-11.6

EXPOSURE & HEALTH EFFECTS
Routes of exposure The substance can be absorbed into the body by inhalation of its vapour, through the skin 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 nervous system. This may result in tissue lesions.	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 Repeated or prolonged contact may cause skin sensitization. The substance may have effects on the thymus, lungs, central nervous system and nasal passage.

EXPOSURE & HEALTH EFFECTS

Routes of exposure
The substance can be absorbed into the body by inhalation of its vapour, through the skin 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 nervous system. This may result in tissue lesions.

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
Repeated or prolonged contact may cause skin sensitization. The substance may have effects on the thymus, lungs, central nervous system and nasal passage.

OCCUPATIONAL EXPOSURE LIMITS
TLV: 25 ppm as TWA; (skin). MAK: 83 mg/m³, 20 ppm; peak limitation category: II(2); skin absorption (H); pregnancy risk group: C

ENVIRONMENT
The substance is harmful to aquatic organisms.

NOTES

ADDITIONAL INFORMATION

EC Classification
Symbol: Xn; R: 10-22; S: (2)-21-23-24/25

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