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LC1458 Crotonaldehyde

for synthesis


Order number Packaging Quantity Price €
AC28458 Glass bottle 100 ml 12.06
AC28458 Glass bottle 1 l 29.48


Product information
Synonyms 2-Butenal
Hill Formula C4H6O
HS Code 2912 19 90
EC number 224-030-0
Molar mass 70.09 g/mol
EC index number 605-009-00-9
CAS number 4170-30-3


Chemical and physical data
Ignition temperature 230 °C
Solubility 181 g/l (20 °C)
Melting point -74 °C
Molar mass 70.09 g/mol
Density 0.85 g/cm3 (20 °C)
Boiling point 104 °C (1013 hPa)
Vapor pressure 40 hPa (20 °C)
Explosion limit 2.1 – 15.5 %(V)
Flash point 13 °C
Refractive index 1.4312 (20 °C, 589 nm)


Safety information according to GHS
Hazard Statement(s) H225: Highly flammable liquid and vapour.
H341: Suspected of causing genetic defects.
H330: Fatal if inhaled.
H311: Toxic in contact with skin.
H301: Toxic if swallowed.
H373: May cause damage to organs through prolonged or repeated exposure.
H335: May cause respiratory irritation.
H315: Causes skin irritation.
H318: Causes serious eye damage.
H400: Very toxic to aquatic life.
Precautionary Statement(s) P280: Wear protective gloves/protective clothing/eye protection/face protection.
P273: Avoid release to the environment.
P304 + P340: IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing.
P302 + P352: IF ON SKIN: Wash with plenty of soap and water.
P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P403 + P235: Store in a well-ventilated place. Keep cool.
Signal Word Danger
Hazard Pictogram(s)

RTECS GP9499000
Storage class 3 Flammable Liquids
WGK WGK 3 highly water endangering
Disposal 9
Carcinogenic compounds and flammable compounds labelled “Highly toxic” or “Toxic”: container F. Alkyl sulfates are carcinogenic; Take particular care to avoid inhalation and skin contact. To neutralize alkyl sulfates, add dropwise (from a dropping funnel) to concentrated ice-cool Ammonia solution (Cat.No. 105426) with vigorous stirring. Before placing in container D, check the pH with pH Universal indicator strips (Cat.No. 109535).


Safety information
R Phrase R 11-24/25-26-37/38-41-48/22-50-68
Highly flammable.Toxic in contact with skin and if swallowed.Very toxic by inhalation.Irritating to respiratory system and skin.Risk of serious damage to eyes.Harmful: danger of serious damage to health by prolonged exposure if swallowed.Very toxic to aquatic organisms.Possible risk of irreversible effects.
S Phrase S 26-28-36/37/39-45-61
In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.After contact with skin, wash immediately with plenty of soap and water.Wear suitable protective clothing, gloves and eye/face protection.In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible).Avoid release to the environment. Refer to special instructions/ Safety data sheets.
Categories of danger highly flammable, very toxic, irritant, dangerous for the environment, mutagenic
Hazard Symbol


Very toxic

Dangerous for the environment


Transport information
Declaration (transport by sea) IMDG-Code UN 1143 CROTONALDEHYDE, STABILIZED, 6.1 (3), I, Marine Pollutant: P
Declaration (transport by air) IATA-DGR UN 1143 CROTONALDEHYDE, STABILIZED, 6.1 (3),


Toxicological data
LD 50 oral LD50 rat 80 mg/kg
LD 50 dermal LD50 rabbit 128 – 324 mg/kg


Assay (GC, area%) ≥ 99 %
Density (d 20 °C/ 4 °C) 0.851 – 0.853
Identity (IR) passes test


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