TRANS-2-BUTENOIC ACID
- CAS NO.:107-93-7
- Empirical Formula: C4H6O2
- Molecular Weight: 86.09
- MDL number: MFCD00002701
- EINECS: 203-533-9
- SAFETY DATA SHEET (SDS)
- Update Date: 2024-05-09 18:06:31
What is TRANS-2-BUTENOIC ACID?
Chemical properties
White to light yellow crystalline flakes
Chemical properties
2-Butenoic acid is a crystalline compound with a pungent odor.
The Uses of TRANS-2-BUTENOIC ACID
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.
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.
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.
General Description
Crotonic acid undergoes esterification with butan-2-ol by following second order reaction kinetics.
Flammability and Explosibility
Not classified
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.]
Properties of TRANS-2-BUTENOIC ACID
Melting point: | 70-72 °C (lit.) |
Boiling point: | 180-181 °C (lit.) |
Density | 1.027 g/mL at 25 °C (lit.) |
vapor density | 2.97 (vs air) |
vapor pressure | 0.19 mm Hg ( 20 °C) |
refractive index | 1.4228 |
FEMA | 3908 | (E)-2-BUTENOIC ACID |
Flash point: | 190 °F |
storage temp. | Store below +30°C. |
solubility | H2O: soluble |
form | Crystalline Flakes |
pka | 4.69(at 25℃) |
color | White to light yellow |
PH | 3 (10g/l, H2O, 20℃) |
Odor | at 1.00 %. milky |
explosive limit | 15.1%, 171°F |
Water Solubility | 94 g/L (25 ºC) |
Merck | 14,2597 |
JECFA Number | 1371 |
BRN | 1719943 |
CAS DataBase Reference | 107-93-7(CAS DataBase Reference) |
NIST Chemistry Reference | Crotonic acid(107-93-7) |
EPA Substance Registry System | 2-Butenoic acid, (2E)- (107-93-7) |
Safety information for TRANS-2-BUTENOIC ACID
Signal word | Danger |
Pictogram(s) |
Corrosion Corrosives GHS05 |
GHS Hazard Statements |
H318:Serious eye damage/eye irritation |
Precautionary Statement Codes |
P280:Wear protective gloves/protective clothing/eye protection/face protection. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
Computed Descriptors for TRANS-2-BUTENOIC ACID
InChIKey | LDHQCZJRKDOVOX-NSCUHMNNSA-N |
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