?????
????? ??
- ???
- 88-94 °C (lit.)
- ?? ?
- 160.75°C (rough estimate)
- ??
- 1,62 g/cm3
- ???
- 1.4502 (estimate)
- ?? ??
- Hygroscopic, -20°C Freezer, Under inert atmosphere
- ???
- DMSO(??, ??? ??), ?(?? ???)
- ?? ?? (pKa)
- pK1:2.29(0);pK2:6.15(+1) (25°C)
- ??? ??
- ??? ??
- ??
- ??~?? ???
- ???
- ???? ????
- ??
- Hygroscopic
- Merck
- 14,2321
- BRN
- 1722679
- ???
- ???
- CAS ??????
- 498-23-7(CAS DataBase Reference)
- NIST
- 2-Butenedioic acid, 2-methyl-, (Z)-(498-23-7)
??
- ?? ? ?? ??
- ?? ? ???? ?? (GHS)
| ??? ?? |
Xn |
|
|
| ?? ???? ?? |
22-36/37/38 |
|
|
| ????? |
36-37/39-26 |
|
|
| ????(UN No.) |
2811 |
|
|
| WGK ?? |
3 |
|
|
| RTECS ?? |
GE6650000 |
|
|
| ?? ?? |
6.1(b) |
|
|
| ???? |
III |
|
|
| HS ?? |
29171900 |
|
|
| ?? |
LD50 in rats, mice (mg/kg): 1320, 2260 orally (Jenner) |
|
|
| ????(GHS): |
 
|
| ?? ?: |
Warning |
| ??·?? ??: |
| ?? |
??·?? ?? |
?? ?? |
?? |
?? ? |
?? ?? |
P- ?? |
| H301 |
??? ??? |
?? ?? ?? - ?? |
?? 3 |
?? |
|
P264, P270, P301+P310, P321, P330,P405, P501 |
| H302 |
??? ??? |
?? ?? ?? - ?? |
?? 4 |
?? |
|
P264, P270, P301+P312, P330, P501 |
|
| ??????: |
| P264 |
?? ??? ?? ??? ????. |
| P264 |
?? ??? ?? ??? ????. |
| P270 |
? ??? ??? ??? ???, ???? ???? ???. |
| P321 |
(…) ??? ???. |
| P405 |
???? ?????. |
| P501 |
...? ??? / ??? ?? ???. |
|
| NFPA 704 |
|
|
|
????? C??? ??, ??, ??
??? ??
white to light beige crystalline powder
??
Citraconic acid is used in synthetic or copolymer oils,
in treating metals for adhesion of polyolefins, and in
thermoplastics.
Purification Methods
Steam distil and crystallise it from EtOH/ligroin. [Beilstein 2 H 768, 2 I 309, 2 II 652, 2 III 1938, 2 IV 2230.]
????? ?? ?? ? ???
???
?? ??
????? ?? ??
???( 167)?? ??
