CAS mumber
4170-30-3

Molecular formula
C4H6O

SMILES
C/C=C/C=O

Retention indicies (RI)

• DB5: 657.0
• Carbowax: 1012.0

XLogP3-AA
0.5 Well soluble in MMB, TEC, DEP

Molecular weight
70.09 g/mol

Melting points

• -105 °F (EPA, 1998)
• -101 °F (EPA, 1998)
• -69 °C
• -76.6 °C
• -69 °C
• -76.5 °C (trans), -69 °C (cis)
• -101 °F
• -101 °F

Boiling points

• 219 °F at 760 mmHg (EPA, 1998)
• 219.2 °F at 760 mmHg (EPA, 1998)
• 102.2 °C
• 102.2 °C
• 104.00 °C. @ 760.00 mm Hg
• 104 °C
• 219 °F
• 219 °F

Flash points

• 55 °F (EPA, 1998)
• 55.4 °F (EPA, 1998)
• The Guide from the Emergency Response Guidebook is for "crotonaldehyde, inhibited." 13 °C
• 13 °C (55 °F) Closed cup
• 9 °C (48 °F) - closed cup
• 13 °C c.c.
• 55 °F
• 45 °F

Solubilities

• less than 0.1 mg/mL at 65.3 °F (NTP, 1992)
• Heat capacity: 0.7 ca/g ... Dimerizes under strong acid conditions, slowly oxidizes to crotonic acid. Solubility of water in crotonaldehyde (g/100g) at 20 °C: 9.5; at 5 °C: 19.2
• In water (g/100 g): 18.1 at 20 °C; 19.2 at 5 °C
• In water, 1.81X10+5 mg/L at 20 °C
• Soluble in chloroform; very soluble in ethanol, ethyl ether, acetone; miscible in benzene
• Miscible with all proportions with alcohol, ether, toluene, kerosesne, gasolene, solvent naphtha
• In water, 1.5X10+5 mg/L at 20 °C
• In water, 1.56X10+5 mg/L at 25 °C
• Soluble in water
• In water, 181,000 ppm at 20 °C
• Soluble in chloroform; very soluble in ethanol, ethyl ether, acetone; miscible with benzene
• 150 mg/mL at 2 °C
• Solubility in water, g/100ml at 20 °C: 15-18 (freely soluble)
• 18%

• CROTONALDEHYDE
• 2-Butenal
• Crotonal
• Crotylaldehyde
• (2E)-but-2-enal
• 123-73-9
• trans-Crotonaldehyde
• (E)-Crotonaldehyde
• Methylpropenal
• Crotonic aldehyde
• trans-2-Butenal
• 1-Formylpropene
• (E)-but-2-enal
• 2-Butenal, (2E)-
• Propylene aldehyde
• beta-Methylacrolein
• 2-Butenaldehyde
• Aldehyde crotonique
• Krotonaldehyd
• trans-but-2-enal
• Topanel
• trans- Crotonal
• trans-2-butenaldehyde
• Topanel CA
• 4170-30-3
• 2-Butenal, (E)-
• E-2-Butenal
• beta-Methyl acrolein
• RCRA waste number U053
• CROTONALDEHYDE, (E)-
• 2-Butenal, inhibited
• CCRIS 909
• NSC 56354
• (E)-Crotonaldehyde (IUPAC)
• HSDB 252
• CHEBI:41607
• Crotonaldehyde, inhibited
• NCI-C56279
• but-2-enal
• 3-Methylacrolein, inhibited
• AI3-18303 (USDA)
• EINECS 224-030-0
• UNII-9G72074TUW
• (E)-2-Butenal
• UN 1143
• AI3-18303
• RCRA waste no. U053
• DTXCID404864
• CHEMBL1086445
• DTXSID8024864
• EC 224-030-0
• 9G72074TUW
• 6PUW625907
• Butenal
• Krotonaldehyd [Czech]
• trans-Crotonaldehyde; trans-2-Butenal
• (E)-2-Butenal (~0.1% MEHQ)
• (Z)-2-Butenal
• .beta.-Methylacrolein
• (2Z)-2-Butenal
• Aldehyde crotonique [French]
• CCRIS 4501
• Crotonaldehyde, cis-
• HSDB 2871
• EINECS 204-647-1
• UN1143
• Crotenaldehyde
• Krotonaldehyde
• Topenel
• Croton aldehyde
• NSC-56354
• 3-Methylacrolein
• UNII-6PUW625907
• Aldehido crotonico
• t-2-Butenal
• nchem.215-comp8
• (2E)-crotonaldehyde
• 2-Buten-1-al
• (2E)-2-Butenal
• But-(E)-2-enal
• Crotonaldehyde, stabilized
• Epitope ID:143635
• Crotonaldehyde, stabilized [UN1143] [Poison]
• CROTONALDEHYDE (IARC)
• (E)-CROTONIC ALDEHYDE
• GTPL6288
• CROTONALDEHYDE, (2E)-
• DTXSID6020351
• Crotonaldehyde, predominantly trans
• (E)-.BETA.-METHYLACROLEIN
• (E)-CROTONALDEHYDE [HSDB]
• CROTONALDEHYDE E-FORM [MI]
• STR00019
• Tox21_200316
• BBL011428
• BDBM50318489
• MFCD00007003
• STL146535
• AKOS005720774
• DB04381
• 2-BUTENAL (TRANS) CROTONALDEHYDE
• NCGC00090830-01
• NCGC00090830-02
• NCGC00257870-01
• Crotonaldehyde, predominantly trans, 98%
• CAS-4170-30-3
• CS-0015768
• NS00068728
• C19377
• Crotonaldehyde, stabilized [UN1143] [Poison]
• A805141
• Q416036
• 95:5 MIXTURE OF TRANS:CIS CROTONALDEHYDE ISOMERS
• 224-030-0
• Crotonaldehyde, predominantly trans, >=99%, contains 0.1-0.2% BHT as stabilizer, 1% H2O as stabilizer