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NIOSH

3-METHYLBUTANAL

ICSC: 1748
Isovaleraldehyde
Isopentaldehyde
Isopentanal
C5H10O/(CH3)2CHCH2CHO
Molecular mass: 86.1
3 Flammable Liquid placard ICSC # 1748		CAS # 590-86-3
RTECS # ES3450000
UN # 2058
November 24, 2009 Validated
De, GHS rechecked

TYPES OF HAZARD/ EXPOSURE

ACUTE HAZARDS/ SYMPTOMS

PREVENTION

FIRST AID/
FIRE FIGHTING

FIRE Highly flammable.
NO open flames, NO sparks, and NO smoking.
Dry sand. Carbon dioxide. Dry powder. NO water ,
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 Sore throat. Cough.
Ventilation. Avoid inhalation of mist
Fresh air, rest.
•SKIN Redness.
Protective gloves.
Rinse and then wash skin with water and soap.
•EYES Redness.
Safety spectacles
Rinse with plenty of water (remove contact lenses if easily possible).
•INGESTION
Do not eat, drink, or smoke during work.
Rinse mouth. Do NOT induce vomiting. risk peer review decision

SPILLAGE DISPOSAL

STORAGE

PACKAGING & LABELLING

Evacuate danger area! Consult an expert! Personal protection: filter respirator for organic gases and vapours adopted to the airborne concentration of the substance. Remove all ignition sources. Collect leaking liquid in sealable containers. Absorb remaining liquid in sand or inert absorbent and remove to safe place. Do NOT wash away into sewer. Do NOT let this chemical enter the environment.
Fireproof. Well closed. Store in an area without drain or sewer access. Provision to contain effluent from fire extinguishing.
UN Hazard Class: 3
UN Packing Group: II
Signal: Danger
Flame-Health haz
Highly flammable liquid and vapour
Causes mild skin irritation
Causes eye irritation
May be harmful if swallowed and enters airways
Toxic to aquatic life
ICSC: 1748 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-METHYLBUTANAL

ICSC: 1748

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PHYSICAL STATE; APPEARANCE:
COLOURLESS LIQUID , WITH PUNGENT 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 formed easily.

CHEMICAL DANGERS:
The substance decomposes on heating producing irritating fumes.

OCCUPATIONAL EXPOSURE LIMITS:
TLV not established.
MAK not established.


ROUTES OF EXPOSURE:


INHALATION RISK:
A harmful contamination of the air can be reached very quickly 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.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:

PHYSICAL
PROPERTIES

Boiling point: 92.5°C
Melting point: -51°C
Relative density (water = 1): 0.8
Solubility in water, g/100 ml: 2
(poor)
Vapour pressure, kPa at 20°C: 6.1
Relative vapour density (air = 1): 3.0
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.1
Flash point: -3 °C c.c.
Auto-ignition temperature: 175°C
Explosive limits, vol% in air: 1.0-6.8
Octanol/water partition coefficient as log Pow: 1.31
Viscosity, mm2/s at 20 °C: 0.725

ENVIRONMENTAL
DATA

The substance is toxic to aquatic organisms. It is strongly advised that this substance does not enter the environment.

N O T E S

Health effects of exposure to the substance have not been investigated adequately.
NFPA Code: H1; F3; R0;

ADDITIONAL INFORMATION



ICSC: 1748 3-METHYLBUTANAL
(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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