Crotonaldehyde

About Crotonaldehyde

Crotonaldehyde is a carbonyl building block carrying the CAS registry number 4170-30-3. Its molecular formula is C4H6O and its molecular weight is 70.09 g/mol. The IUPAC name is (E)-but-2-enal. It is also known as Crotonaldehyde (cis/trans isomers) or Crotonaldehyde (GCS).

Keep the container tightly sealed and store it in a cool, dry area. Under GHS it is labelled “Danger”, so handle it with suitable PPE and consult the SDS.

Typical applications include organic synthesis, condensation and reductive amination and API intermediates. Buyers come mainly from pharmaceutical manufacturing and academic and industrial research.

Standard pack sizes are 100 mg, 250 mg, 1 g and 5 g, and every batch ships with a Certificate of Analysis (COA) and we export worldwide. SDS and detailed specification sheets can be requested with your quotation.

Typical applications

Organic synthesis
Condensation & reductive amination
API intermediates

Industries

Specifications & identifiers

Chemical identifiers
Product name	Crotonaldehyde
Catalogue No.	VQ-039023
CAS Number	4170-30-3
IUPAC name	(E)-but-2-enal
Molecular formula	C₄H₆O
Molecular weight	70.09 g/mol
Exact mass	70.0419
InChIKey	MLUCVPSAIODCQM-NSCUHMNNSA-N
SMILES	C/C=C/C=O
PubChem CID	447466

Physical properties
Physical form	Other
LogP (XLogP3)	0.5
H-bond donors / acceptors	0 / 1
TPSA	17.1 Å²
Synonyms	Crotonaldehyde (cis/trans isomers), Crotonaldehyde (GCS), Crotonaldehyde (Mixture Of Cis/trans Isomers), 2-Butenal, Crotonal, (2E)-but-2-enal, Crotonic aldehyde, Methylpropenal, 1-Formylpropene, beta-Methylacrolein, Propylene aldehyde, 2-Butenaldehyde

Safety & hazard information (GHS)

Flammable

Corrosive

Toxic

Health hazard

Environmental hazard

Signal word: Danger

Hazard statements

H225Highly flammable liquid and vapor
H301Toxic if swallowed
H311Toxic in contact with skin
H315Causes skin irritation
H318Causes serious eye damage
H330Fatal if inhaled
H335May cause respiratory irritation
H341Suspected of causing genetic defects
H400Very toxic to aquatic life

Precautionary statements: P203, P210, P233, P240, P241, P242, P243, P260, P261, P262, P264, P264 + P265, P270, P271, P273, P280, P284, P301 + P316, P302 + P352, P303 + P361 + P353, P304 + P340, P305 + P354 + P338, P316, P317

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Frequently asked questions

What is the CAS number of Crotonaldehyde?

The CAS Registry Number of Crotonaldehyde is 4170-30-3. It is also known as Crotonaldehyde (cis/trans isomers), Crotonaldehyde (GCS), Crotonaldehyde (Mixture Of Cis/trans Isomers).

What is the molecular formula and molecular weight of Crotonaldehyde?

Crotonaldehyde has the molecular formula C4H6O and a molecular weight of 70.09 g/mol. Its IUPAC name is (E)-but-2-enal.

Which grade and pack sizes of Crotonaldehyde can I order?

We supply Crotonaldehyde, in 100 mg, 250 mg, 1 g, 5 g packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Crotonaldehyde?

Yes. Every lot of Crotonaldehyde is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Crotonaldehyde be shipped internationally?

Yes. Crotonaldehyde is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.