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NIOSH

3-PENTANONE

ICSC: 0874

Diethyl ketone
Dimethylacetone
Methacetone
C5H10O / CH3CH2COCH2CH3
Molecular mass: 86.1
ICSC # 0874 		CAS # 96-22-0
RTECS # SA8050000
UN # 1156
EC # 606-006-00-5
March 28, 1996 Validated

TYPES OF HAZARD/ EXPOSURE

ACUTE HAZARDS/ SYMPTOMS

PREVENTION

FIRST AID/
FIRE FIGHTING

FIRE Highly flammable.
NO open flames, NO sparks, and NO smoking.
Alcohol-resistant foam. powder, carbon dioxide.
EXPLOSION Vapour/air mixtures are explosive.
Closed system, ventilation, explosion-proof electrical equipment and lighting. Do NOT use compressed air for filling, discharging, or handling.
In case of fire: keep drums, etc., cool by spraying with water.
EXPOSURE


•INHALATION Cough. Shortness of breath.
Ventilation.
Fresh air, rest. Refer for medical attention.
•SKIN Dry skin. Redness.
Protective gloves.
Remove contaminated clothes. Rinse skin with plenty of water or shower.
•EYES Redness.
Safety spectacles.
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.

SPILLAGE DISPOSAL

STORAGE

PACKAGING & LABELLING

Ventilation. Collect leaking liquid in sealable metal (mild steel) containers. Absorb remaining liquid in sand or inert absorbent and remove to safe place. Do NOT wash away into sewer. (Extra personal protection: filter A for organic vapours).
Fireproof. Separated from oxidants.

F symbol
Xi symbol
R: 11-37-66-67
S: 2-9-16-25-33
UN Hazard Class: 3
UN Packing Group: II
ICSC: 0874 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities (C) IPCS CEC 1994. No modifications to the International version have been made except to add the OSHA PELs, NIOSH RELs and NIOSH IDLH values.

3-PENTANONE

ICSC: 0874

I

M

P

O

R

T

A

N

T


D

A

T

A

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 mixes well with air, explosive mixtures are easily formed.

CHEMICAL DANGERS:
Reacts violently with oxidants, causing fire and explosion hazard. Attacks many plastics.

OCCUPATIONAL EXPOSURE LIMITS:
TLV: 200 ppm as TWA; 300 ppm as STEL; (ACGIH 2008).
MAK not established.
OSHA PEL†: none
NIOSH REL: TWA 200 ppm (705 mg/m3)
NIOSH IDLH: N.D. See: IDLH INDEX


ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation of its vapour.

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

EFFECTS OF SHORT-TERM EXPOSURE:
The substance irritates the eyes, the skin and the respiratory tract.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
The liquid defats the skin.

PHYSICAL
PROPERTIES

Boiling point: 102°C
Melting point: -42°C
Relative density (water = 1): (25°C) 0.81
Solubility in water: moderate
Vapour pressure, kPa at 20°C: 2.0
Relative vapour density (air = 1): 3.0
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.01
Flash point: 13°C o.c.
Auto-ignition temperature: 452°C
Explosive limits, vol% in air: 1.6-3
Octanol/water partition coefficient as log Pow: 0.99 (estimated)

ENVIRONMENTAL
DATA


N O T E S

Transport Emergency Card: TEC (R)-30G30

NFPA Code: H1; F3; R0;
Card has been partially updated in November 2008: see Occupational Exposure Limits,

ADDITIONAL INFORMATION



ICSC: 0874 3-PENTANONE
(C) IPCS, CEC, 1994
IMPORTANT LEGAL NOTICE: Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH, the CEC or the IPCS is responsible for the use which might be made of this information. This card contains the collective views of the IPCS Peer Review Committee and may not reflect in all cases all the detailed requirements included in national legislation on the subject. The user should verify compliance of the cards with the relevant legislation in the country of use. The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.
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