Malonate , Analysis standard , 141-82-2
Synonym(s):
13C Labeled malonic acid;Propanedioic acid;Propanedioic acid-13C3
CAS NO.：141-82-2
Empirical Formula: C3H4O4
Molecular Weight: 104.06
MDL number: MFCD00002707
EINECS: 205-503-0
| Pack Size | Price | Stock | Quantity |
| 1G | RMB159.20 | In Stock |
|
| others | Enquire |
PRODUCT Properties
| Melting point: | 132-135 °C (dec.) (lit.) |
| Boiling point: | 140℃（decomposition） |
| Density | 1.619 g/cm3 at 25 °C |
| vapor pressure | 0-0.2Pa at 25℃ |
| refractive index | 1.4780 |
| Flash point: | 157°C |
| storage temp. | Sealed in dry,Room Temperature |
| solubility | 1 M NaOH: soluble100mg/mL, clear to slightly hazy, colorless to faintly yellow |
| form | Liquid |
| pka | 2.83(at 25℃) |
| color | White |
| PH | 3.17(1 mM solution);2.5(10 mM solution);1.94(100 mM solution) |
| Water Solubility | 1400 g/L (20 ºC) |
| Merck | 14,5710 |
| BRN | 1751370 |
| Stability: | Stable. Incompatible with oxidizing agents, reducing agents, bases. |
| InChIKey | OFOBLEOULBTSOW-UHFFFAOYSA-N |
| LogP | -0.81 |
| CAS DataBase Reference | 141-82-2(CAS DataBase Reference) |
| NIST Chemistry Reference | Malonic acid(141-82-2) |
| EPA Substance Registry System | Propanedioic acid (141-82-2) |
Description and Uses
Malonic acid (MA), also known as propanedioic acid, is a dicarboxylic acid with structure CH2(COOH)2. It have three kinds of crystal forms, of which two are triclinic, and one is monoclinic. That crystallized from ethanol is white triclinic crystals.It decomposes to acetic acid and carbon dioxide at 140℃. It does not decompose at 1.067×103~1.333×103Pa vacuum, but directly sublimates. The ionised form of malonic acid, as well as its esters and salts, are known as malonates. For example, diethyl malonate is malonic acid's ethyl ester. The name originates from Latin malum, meaning apple.
Malonic acid is used as an intermediate in the manufacture of barbiturates and other pharmaceuticals. It is a component used as a stabilizer in many high-end cosmetic and pharmaceutical products. Malonic acid is also used as building block in chemical synthesis, specifically to introduce the molecular group -CH2-COOH. It is used for the introduction of an acetic acid moiety under mild conditions by Knoevenagel condensation and subsequent decarboxylation.
Safety
| Symbol(GHS) |  GHS05 |
| Signal word | Danger |
| Hazard statements | H318 |
| Precautionary statements | P280-P305+P351+P338 |
| Hazard Codes | Xn,Xi |
| Risk Statements | 20/22-41-36/37/38-22 |
| Safety Statements | 26-36/39-37/39-36 |
| RIDADR | 3261 |
| WGK Germany | 1 |
| RTECS | OO0175000 |
| TSCA | Yes |
| PackingGroup | III |
| HS Code | 29171910 |
| Hazardous Substances Data | 141-82-2(Hazardous Substances Data) |
| Toxicity | mouse,LD50,intraperitoneal,300mg/kg (300mg/kg),National Technical Information Service. Vol. AD277-689, |
