C4H6O
70.09 g/mol
Industrial ChemicalDanger
Methacrylaldehyde
CAS78-85-3EC201-150-1
Category
Industrial Chemical
Compound Class
Other
Primary Use
Chemical intermediate for resin production
Methacrylaldehyde is a colorless liquid that is less dense than water and may be toxic by ingestion, inhalation, and skin absorption. It is severely irritating to the skin and eyes and is used primarily as a chemical intermediate in the production of resins.
Chemical intermediate for resin productionComonomer in resin productionIntermediate for methacrylonitrile or methacrylic acid production
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
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Related Compounds
ApplicationSame Use
1,3-bis(2-hydroxyethoxy)benzene
CAS102-40-9
Chemical intermediate for resin production
ReferenceSame Category
2-chlorobutane
CAS78-86-4
Organic synthesis intermediate
ReferenceSame Category
1,2-dichloropropane
CAS78-87-5
Chemical intermediate for chlorinated chemicals
ReferenceSame Category
1,2-propanediamine
CAS78-90-0
chemical intermediate for medicines and dyes
ReferenceSame Category
2-butanol
CAS78-92-2
Solvent and chemical intermediate
Safety Reference
Danger
H225Highly flammable liquid and vapour
H301Toxic if swallowed
H311Toxic in contact with skin
H314Causes severe skin burns and eye damage
H318Causes serious eye damage
H330Fatal if inhaled
H341Suspected of causing genetic defects
H400Very toxic to aquatic life
H410Very toxic to aquatic life with long lasting effects
H335May cause respiratory irritation
Regulatory Compliance1
- CN Catalogue of Hazardous ChemicalsCNRegulation
Customs Tariff Classification
The international HS code for Methacrylaldehyde (CAS 78-85-3) is 2912.19.
HS code (international, 6-digit)
2912.19
EU CN code (8-digit)
2912 19 00
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
2-methylprop-2-enal
InChIKey
STNJBCKSHOAVAJ-UHFFFAOYSA-N
SMILES
CC(=C)C=O
Synonyms (31)
- 2-FORMYL-1-PROPENE
- 2-Methyl-2-propenal
- 2-Methylacrolein
- 2-Methylacrylaldehyde
- 2-Methylenepropanal
- 2-Methylprop-2-enal
- 2-Methylpropenal
- 2-Methylpropenal [Czech]
- 2-Propenal, 2-methyl-
- Acrolein, 2-methyl-
- Isobutenal
- Methacraldehyde
- Methacrolein
- Methacrylaldehyde
- Methacrylaldehyde, inhibited
- Methacrylic aldehyde
- Methakrylaldehyd
- Methakrylaldehyd [Czech]
- Methylacrylaldehyde
- alpha-Methacrolein
- alpha-Methylacrolein
- alpha-methylacrylaldehyde
- methacroleine
- methyl propenal
- methylacrolein
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