ICSC 0647 - DIACETONE ALCOHOL

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

DIACETONE ALCOHOL

ICSC: 0647
_{April 2005}

4-Hydroxy-4-methylpentan-2-one
2-Pentanone, 4-hydroxy-4-methyl-
4-Hydroxy-2-keto-4-methylpentane
4-Hydroxy-4-methyl-2-pentanone

CAS No: 123-42-2
RTECS No: SA9100000
UN No: 1148
EC No: 603-016-00-1

C₆H₁₂O₂ / (CH₃)₂C(OH)CH₂COCH₃
Molecular mass: 116.2

TYPES OF HAZARD / EXPOSURE	ACUTE HAZARDS / SYMPTOMS	PREVENTION	FIRST AID / FIRE FIGHTING
FIRE	Flammable. See Notes.	NO open flames, NO sparks, and NO smoking.	Water spray. Alcohol-resistant foam. Dry powder. Carbon dioxide.
EXPLOSION	Above 58°C explosive vapour/air mixtures may be formed. (See Notes.)	Above 58°C use a closed system, ventilation, and explosion-proof electrical equipment. Use non-sparking handtools.	In case of fire: keep drums, etc., cool by spraying with water.

EXPOSURE
Inhalation	Cough. Sore throat.	Ventilation, local exhaust, or breathing protection.	Fresh air, rest.
Skin	Redness. Dry skin. MAY BE ABSORBED!	Protective gloves. Protective clothing.	Remove contaminated clothes. Rinse and then wash skin with water and soap.
Eyes	Redness. Pain.	Safety goggles.	First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
Ingestion		Do not eat, drink, or smoke during work.	Rinse mouth. Do NOT induce vomiting. Give one or two glasses of water to drink. Refer for medical attention.

SPILLAGE DISPOSAL	PACKAGING & LABELLING
Remove all ignition sources. Personal protection: filter respirator for organic gases and vapours. Cover the spilled material with absorbent. Carefully collect remainder.	EU classification Xi Symbol R: 36 S: (2-)24/25 UN classification UN Hazard Class: 3 UN Pack Group: III

EMERGENCY RESPONSE	SAFE STORAGE
Transport Emergency Card: TEC (R)-30GF1-III NFPA Code: H1; F2; R0	Fireproof. Separated from acids, bases, amines and oxidants.

IMPORTANT DATA

Physical State; Appearance
COLOURLESS LIQUID, WITH CHARACTERISTIC ODOUR.

Chemical dangers
The substance decomposes on heating or on burning or on contact with acids, bases and amines producing acetone and mesityl alcohol. Reacts violently with oxidants forming flammable/explosive gas (hydrogen - see ICSC0001)

Occupational exposure limits
TLV: 50 ppm as TWA; (ACGIH 2005).
MAK: 20 ppm, 96 mg/m³; Peak limitation category: I(2); skin absorption (H); Pregnancy risk group: D; (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
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 short-term exposure
The substance is irritating to the eyes, the skin and the respiratory tract. If this liquid is swallowed, aspiration into the lungs may result in chemical pneumonitis. Exposure far above the OEL may result in lowering of consciousness.

Effects of long-term or repeated exposure
The liquid defats the skin.

PHYSICAL PROPERTIES

ENVIRONMENTAL DATA

Boiling point: 169-171°C
Melting point: -47°C
Relative density (water = 1): 0.93
Solubility in water: miscible
Vapour pressure, kPa at 20°C: 0.108
Relative vapour density (air = 1): 4.0
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.0048
Flash point: 58°C c.c.
Auto-ignition temperature: 640°C
Explosive limits, vol% in air: 1.8-6.9
Octanol/water partition coefficient as log Pow: -0.14 to 1.03 (calculated)

NOTES

This card is only valid for the pure substance.The technical product may contain up to 5% acetone (see ICSC 0087), resulting in high flammability.
Other UN Classification for technical product: UN hazard class 3, UN pack group II.
Card has been partially updated in August 2007: see Ingestion First Aid, 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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Neither the EC nor the IPCS nor any person acting on behalf of the EC or the IPCS is responsible for the use which might be made of this information.

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