ICSC 1748 - 3-METHYLBUTANAL

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3-METHYLBUTANAL	ICSC: 1748 (November 2009)
Isovaleraldehyde Isopentaldehyde Isopentanal

CAS #: 590-86-3

UN #: 2058

EC Number: 209-691-5

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


	SYMPTOMS	PREVENTION	FIRST AID
Inhalation	Sore throat. Cough.	Use ventilation. Avoid inhalation of mist.	Fresh air, rest.
Skin	Redness.	Protective gloves.	Rinse and then wash skin with water and soap.
Eyes	Redness.	Wear 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.

SPILLAGE DISPOSAL	CLASSIFICATION & LABELLING
Remove all ignition sources. Evacuate danger area! Consult an expert! Personal protection: filter respirator for organic gases and vapours adapted to the airborne concentration of the substance. Do NOT let this chemical enter the environment. Collect leaking liquid in sealable containers. Absorb remaining liquid in sand or inert absorbent. Then store and dispose of according to local regulations. Do NOT wash away into sewer.	According to UN GHS Criteria Highly flammable liquid and vapour Causes mild skin irritation Causes eye irritation May be harmful if swallowed and enters airways Toxic to aquatic life Transportation UN Classification UN Hazard Class: 3; UN Pack Group: II
STORAGE
Fireproof. Well closed. Store in an area without drain or sewer access. Provision to contain effluent from fire extinguishing.
PACKAGING

3-METHYLBUTANAL

ICSC: 1748

PHYSICAL & CHEMICAL INFORMATION
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 easily formed. Chemical dangers Decomposes on heating. This produces irritating fumes.	Formula: C₅H₁₀O/(CH₃)₂CHCH₂CHO Molecular mass: 86.1 Boiling point: 92.5°C Melting point: -51°C Relative density (water = 1): 0.8 Solubility in water, g/100ml: 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: 0.725 mm²/s at 20°C

PHYSICAL & CHEMICAL INFORMATION

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 easily formed.

Chemical dangers
Decomposes on heating. This produces irritating fumes.

Formula: C₅H₁₀O/(CH₃)₂CHCH₂CHO
Molecular mass: 86.1
Boiling point: 92.5°C
Melting point: -51°C
Relative density (water = 1): 0.8
Solubility in water, g/100ml: 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: 0.725 mm²/s at 20°C

EXPOSURE & HEALTH EFFECTS
Routes of exposure Effects of short-term exposure The substance is irritating to the eyes and respiratory tract. The substance is mildly irritating to the skin. If swallowed the substance may cause vomiting and could result in aspiration pneumonitis.	Inhalation risk No indication can be given about the rate at which a harmful concentration of this substance in the air is reached on evaporation at 20°C. Effects of long-term or repeated exposure

EXPOSURE & HEALTH EFFECTS

Routes of exposure

Effects of short-term exposure
The substance is irritating to the eyes and respiratory tract. The substance is mildly irritating to the skin. If swallowed the substance may cause vomiting and could result in aspiration pneumonitis.

Inhalation risk
No indication can be given about the rate at which a harmful concentration of this substance in the air is reached on evaporation at 20°C.

Effects of long-term or repeated exposure

OCCUPATIONAL EXPOSURE LIMITS

ENVIRONMENT
The substance is toxic to aquatic organisms. It is strongly advised not to let the chemical enter into the environment.

NOTES
Health effects of exposure to the substance have not been investigated adequately.

ADDITIONAL INFORMATION

EC Classification

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