PRODUCT Properties
| 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) |
| FEMA | 3908 | (E)-2-BUTENOIC ACID |
| refractive index | 1.4228 |
| Flash point: | 190 °F |
| storage temp. | Store below +30°C. |
| solubility | H2O: soluble |
| pka | 4.69(at 25℃) |
| form | Crystalline Flakes |
| color | White to light yellow |
| PH | 3 (10g/l, H2O, 20℃) |
| Odor | at 1.00 %. milky |
| Odor Type | milky |
| explosive limit | 15.1%, 171°F |
| Water Solubility | 94 g/L (25 ºC) |
| Merck | 14,2597 |
| JECFA Number | 1371 |
| BRN | 1719943 |
| InChIKey | LDHQCZJRKDOVOX-NSCUHMNNSA-N |
| LogP | 0.85 at 25℃ |
Description and 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.
Safety
| Symbol(GHS) |  GHS05 |
| Signal word | Danger |
| Hazard statements | H318 |
| Precautionary statements | P280-P305+P351+P338 |
| Hazard Codes | C,N,Xi |
| Risk Statements | 21/22-34-50/53-36/37/38 |
| Safety Statements | 26-36/37/39-45-61-37/39 |
| 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) |
