Maleic acid , Medicine level, EP, USP , 110-16-7
Synonym(s):
Butenedioic Acid;Toxilic acid;(2Z)-2-Butenedioic acid;(2Z)-But-2-enedioic acid;cis-Butenedioic acid
CAS NO.：110-16-7
Empirical Formula: C4H4O4
Molecular Weight: 116.07
MDL number: MFCD00063177
EINECS: 203-742-5
| Pack Size | Price | Stock | Quantity |
| 500G | RMB135.20 | In Stock |
|
| others | Enquire |
PRODUCT Properties
| Melting point: | 130-135 °C (lit.) |
| Boiling point: | 275°C |
| Density | 1.59 g/mL at 25 °C (lit.) |
| vapor pressure | 0.001Pa at 20℃ |
| refractive index | 1.5260 (estimate) |
| Flash point: | 127 °C |
| storage temp. | Store below +30°C. |
| solubility | 478.8g/l |
| form | Powder/Solid |
| pka | 1.83(at 25℃) |
| Specific Gravity | 1.59 |
| color | White |
| PH | 3.05(1 mM solution);2.21(10 mM solution);1.54(100 mM solution); |
| Water Solubility | 790 g/L (25 ºC) |
| Merck | 14,5703 |
| BRN | 605762 |
| Stability: | Stable. Combustible. Incompatible with strong oxidizing agents, bases. |
| InChIKey | VZCYOOQTPOCHFL-OWOJBTEDSA-N |
| LogP | -1.3 at 20℃ |
Description and Uses
Maleic acid is an organic compound that is a dicarboxylic acid, a molecule with two carboxyl groups. Its chemical formula is HO2CCHCHCO2H. Maleic acid is the cis-isomer of butenedioic acid, where as fumaric acid is the trans-isomer. It is mainly used as a precursor to fumaric acid, and relative to its parent maleic anhydride, maleic acid has few applications.
Maleic acid is used as a precursor to fumaric acid, dimethyl maleate and glyoxalic acid. It is an electrophile and acts as dienophine in Diels-Alder reactions. It reacts with drugs to form more stable addition salts like indacaterol maleate, carfenazine, chlorpheniramine, pyrilamine, methylergonovine and thiethylperazine. Its maleate ion is useful in biochemistry as an inhibitor of transaminase reactions.
Safety
| Symbol(GHS) |   GHS05,GHS07 |
| Symbol(GHS) | GHS05,GHS07 |
| Symbol(GHS) | GHS05,GHS07 |
| Symbol(GHS) | GHS05,GHS07 |
| Symbol(GHS) | GHS05,GHS07 |
| Signal word | Danger |
| Signal word | Danger |
| Signal word | Danger |
| Signal word | Danger |
| Signal word | Danger |
| Hazard statements | H302+H312-H315-H317-H318-H335 |
| Hazard statements | H302+H312-H315-H317-H318-H335 |
| Hazard statements | H302+H312-H315-H317-H318-H335 |
| Hazard statements | H302+H312-H315-H317-H318-H335 |
| Hazard statements | H302+H312-H315-H317-H318-H335 |
| Precautionary statements | P261-P264-P280-P301+P312-P302+P352+P312-P305+P351+P338 |
| Precautionary statements | P261-P264-P280-P301+P312-P302+P352+P312-P305+P351+P338 |
| Precautionary statements | P261-P264-P280-P301+P312-P302+P352+P312-P305+P351+P338 |
| Precautionary statements | P261-P264-P280-P301+P312-P302+P352+P312-P305+P351+P338 |
| Precautionary statements | P261-P264-P280-P301+P312-P302+P352+P312-P305+P351+P338 |
| Hazard Codes | Xn |
| Risk Statements | 22-36/37/38-43 |
| Safety Statements | 26-28-37-28A-46-24 |
| RIDADR | 3261 |
| WGK Germany | 1 |
| RTECS | OM9625000 |
| TSCA | Yes |
| HazardClass | 8 |
| PackingGroup | III |
| HS Code | 29173990 |
