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NIOSH

ISOBUTYL ACETATE

ICSC: 0494

2-Methylpropyl acetate
2-Methyl-1-propyl acetate
Acetic acid, 2-methylpropyl ester
beta-Methylpropyl ethanoate
C6H12O2 / CH3COOCH2CH(CH3)2
Molecular mass: 116.16
ICSC # 0494 		CAS # 110-19-0
RTECS # AI4025000
UN # 1213
EC # 607-026-00-7
November 26, 2003 Validated

TYPES OF HAZARD/ EXPOSURE

ACUTE HAZARDS/ SYMPTOMS

PREVENTION

FIRST AID/
FIRE FIGHTING

FIRE Highly flammable.
NO open flames, NO sparks, and NO smoking.
Foam, alcohol-resistant foam, dry 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. Sore throat. Dizziness. Headache.
Ventilation, local exhaust, or breathing protection.
Fresh air, rest. Refer for medical attention.
•SKIN Dry skin.
Protective gloves.
Remove contaminated clothes. Rinse and then wash skin with water and soap.
•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 Nausea.
Do not eat, drink, or smoke during work.
Rinse mouth. Do NOT induce vomiting. Refer for medical attention.

SPILLAGE DISPOSAL

STORAGE

PACKAGING & LABELLING

Ventilation. Remove all ignition sources. Collect leaking and spilled liquid in sealable containers as far as possible. Absorb remaining liquid in sand or inert absorbent and remove to safe place. Do NOT wash away into sewer. (Extra personal protection: filter respirator for organic gases and vapours.)
Fireproof. Separated from strong oxidants, strong bases and strong acids.

Note: C
F symbol
R: 11-66
S: 2-16-23-25-29-33
UN Hazard Class: 3
UN Packing Group: II
ICSC: 0494 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.

ISOBUTYL ACETATE

ICSC: 0494

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PHYSICAL STATE; APPEARANCE:
COLOURLESS LIQUID , WITH CHARACTERISTIC ODOUR.

PHYSICAL DANGERS:
The vapour mixes well with air, explosive mixtures are easily formed.

CHEMICAL DANGERS:
Reacts with strong oxidants , strong acids and strong bases causing fire and explosion hazard.

OCCUPATIONAL EXPOSURE LIMITS:
TLV: 150 ppm as TWA; (ACGIH 2003).
MAK: 100 ppm, 480 mg/m3;
Peak limitation category: I(2); Pregnancy risk group: C;
(DFG 2003).
OSHA PEL: TWA 150 ppm (700 mg/m3)
NIOSH REL: TWA 150 ppm (700 mg/m3)
NIOSH IDLH: 1300 ppm 10%LEL See: 110190


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

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

EFFECTS OF SHORT-TERM EXPOSURE:
The vapour is mildly irritating to the eyes and the respiratory tract . The substance may cause effects on the central nervous system . Exposure far above the OEL could cause lowering of consciousness.

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

PHYSICAL
PROPERTIES

Boiling point: 118°C
Melting point: -99°C
Relative density (water = 1): 0.87
Solubility in water, g/100 ml at 20°C: 0.67
Vapour pressure, kPa at 20°C: 1.73
Relative vapour density (air = 1): 4.0
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.05
Flash point: 18°C c.c.
Auto-ignition temperature: 421°C
Explosive limits, vol% in air: 1.3-10.5
Octanol/water partition coefficient as log Pow: 1.60

ENVIRONMENTAL
DATA


N O T E S

Transport Emergency Card: TEC (R)-30S1213

NFPA Code: H1; F3; R0

ADDITIONAL INFORMATION



ICSC: 0494 ISOBUTYL ACETATE
(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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