ICSC 0533 - 2,4-PENTADIONE

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

2,4-PENTADIONE

ICSC: 0533
_{August 1997}

Acetyl 2-propanone
Acetoacetone
Acetyl acetone
Pentane-2,4-dione

CAS No: 123-54-6
RTECS No: SA1925000
UN No: 2310
EC No: 606-029-00-0

C₅H₈O₂ / CH₃COCH₂COCH₃
Molecular mass: 100.13

TYPES OF HAZARD / EXPOSURE	ACUTE HAZARDS / SYMPTOMS	PREVENTION	FIRST AID / FIRE FIGHTING
FIRE	Flammable.	NO open flames, NO sparks, and NO smoking.	Powder, foam carbon dioxide.
EXPLOSION	Above 34°C explosive vapour/air mixtures may be formed.	Above 34°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	Ataxia. Dizziness. Drowsiness. Headache. Laboured breathing. Nausea. Vomiting.	Ventilation, local exhaust, or breathing protection.	Fresh air, rest. Artificial respiration if indicated. 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.	Safety goggles, face shield.	First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
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	PACKAGING & LABELLING
Ventilation. Collect leaking and spilled liquid in sealable containers as far as possible. Wash away remainder with plenty of water. Do NOT let this chemical enter the environment (extra personal protection: filter respirator for organic gases and vapours).	EU classification Xn Symbol R: 10-22 S: (2-)21-23-24/25 UN classification UN Hazard Class: 3 UN Subsidiary Risks: 6.1 UN Pack Group: III

EMERGENCY RESPONSE	SAFE STORAGE
NFPA Code: H2; F2; R0	Fireproof. Separated from strong oxidants. Keep in the dark.

IMPORTANT DATA

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.

Occupational exposure limits
TLV not established.
MAK: 20 ppm, 83 mg/m³, skin absorption (H); Peak limitation category: II(2) Pregnancy risk group: C (DFG 2006).

Routes of exposure
The substance can be absorbed into the body by inhalation of its vapour, 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 irritates the eyes, the skin and the respiratory tract. The substance may cause effects on the nervous system, resulting in tissue lesions.

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.

PHYSICAL PROPERTIES	ENVIRONMENTAL DATA
Boiling point: 140°C Melting point: -23°C Relative density (water = 1): 0.98 Solubility in water, g/100 ml: 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	The substance is harmful to aquatic organisms.

NOTES

Card has been partially updated in August 2007: see Fire fighting, Occupational Exposure Limits.

IPCS
International
Programme on
Chemical Safety

Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2006

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Updated by AS. Approved by GS. Last update: 29.01.2008