| Identification | More | [Name]
Crotonic acid | [CAS]
107-93-7 | [Synonyms]
1-PROPENE-1-CARBOXYLIC ACID
2-BUTENOIC ACID
3-METHYLACRYLIC ACID
BETA-METHYLACRYLIC ACID
BUT-2-ENOIC ACID
BUTENOIC ACID
CROTONIC ACID
(E)-2-BUTENOIC ACID
ETHYLIDENEACETIC ACID
FEMA 3908
TRANS-2-BUTENOIC ACID
TRANS-CROTONIC ACID
(2E)-2-Butenoic acid
(e)-2-butenoicaci
(E)-CH3CH=CHCOOH
(E)-Crotonic acid
(e)-crotonicaci
(e)-crotonicacid
1-Carboxypropylene
2-Butenoic acid, (E)- | [EINECS(EC#)]
203-533-9 | [Molecular Formula]
C4H6O2 | [MDL Number]
MFCD00002701 | [Molecular Weight]
86.09 | [MOL File]
107-93-7.mol |
| Chemical Properties | Back Directory | [Appearance]
White to light yellow crystalline flakes | [Melting point ]
70-72 °C (lit.) | [Boiling point ]
180-181 °C (lit.) | [bulk density]
543kg/m3 | [density ]
1.027 g/mL at 25 °C(lit.)
| [vapor density ]
2.97 (vs air)
| [vapor pressure ]
0.19 mm Hg ( 20 °C)
| [FEMA ]
3908 | (E)-2-BUTENOIC ACID | [refractive index ]
1.4228 | [Fp ]
190 °F
| [storage temp. ]
Store below +30°C. | [solubility ]
H2O: soluble | [form ]
Crystalline Flakes | [pka]
4.69(at 25℃) | [color ]
White to light yellow | [Odor]
at 1.00 %. milky | [PH]
3 (10g/l, H2O, 20℃) | [explosive limit]
15.1%, 171°F | [Odor Type]
milky | [Water Solubility ]
94 g/L (25 ºC) | [JECFA Number]
1371 | [Merck ]
14,2597 | [BRN ]
1719943 | [InChIKey]
LDHQCZJRKDOVOX-NSCUHMNNSA-N | [LogP]
0.85 at 25℃ | [CAS DataBase Reference]
107-93-7(CAS DataBase Reference) | [NIST Chemistry Reference]
Crotonic acid(107-93-7) | [EPA Substance Registry System]
107-93-7(EPA Substance) |
| Safety Data | Back Directory | [Hazard Codes ]
C,N,Xi | [Risk Statements ]
R21/22:Harmful in contact with skin and if swallowed .
R34:Causes burns.
R50/53:Very Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment .
R36/37/38:Irritating to eyes, respiratory system and skin . | [Safety Statements ]
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
S61:Avoid release to the environment. Refer to special instructions safety data sheet .
S37/39:Wear suitable gloves and eye/face protection . | [RIDADR ]
UN 2823 8/PG 3
| [WGK Germany ]
3
| [RTECS ]
GQ2900000
| [Autoignition Temperature]
744 °F | [HazardClass ]
8 | [PackingGroup ]
III | [HS Code ]
29161940 | [Toxicity]
LD50 orally in rats: 1.0 g/kg (Smyth, Carpenter) |
| Hazard Information | Back Directory | [Chemical Properties]
2-Butenoic acid is a crystalline compound with a pungent odor. | [Chemical Properties]
White to light yellow crystalline flakes | [Uses]
trans-Crotonic acid is used in the copolymerization of crotonic acid hydrogel systems by using gamma-rays. The crosslinked copolymeric crotonic acid hydrogels release fertilizers and drugs that help to prevent environmental pollution. | [Definition]
ChEBI: Crotonic acid is a but-2-enoic acid with a trans- double bond at C-2. It has been isolated from Daucus carota. It has a role as a plant metabolite. It is a conjugate acid of a crotonate. | [Preparation]
(E)-2-Butenoic acid may be formed by oxidation of crotonaldehyde, 2-butenal. If (Z)-butenoic acid is heated at 180°C, it
is converted to (E)-2-butenoid acid. | [General Description]
Crotonic acid undergoes esterification with butan-2-ol by following second order reaction kinetics. | [Flammability and Explosibility]
Notclassified | [storage]
Store at RT | [Purification Methods]
Distil the acid under reduced pressure and/or recrystallise it from pet ether (b 60-80o) or water, or by partial freezing of the melt. [Beilstein 2 IV 1498.] |
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