Introduction：Basic information about DL-Malic acid CAS 617-48-1, including its chemical name, molecular formula, synonyms, physicochemical properties, and safety information, etc.
DL-Malic acid Basic information
| Product Name: | DL-Malic acid |
| Synonyms: | (+/-)-2-HYDROXYSUCCINIC ACID;MALIC ACID, DL-;(+/-)-butanedioicaci;Musashi-no-Ringosan;DL-Malic acid, 98% (DL-felsre);C00711;(+/-)-HYDROXYBUTANEDIOIC ACID;(+/-)-HYDROXYSUCCINIC ACID |
| CAS: | 617-48-1 |
| MF: | C4H6O5 |
| MW: | 134.09 |
| EINECS: | 210-514-9 |
| Product Categories: | MalicAcidSeries;Food additive and acidulant |
| Mol File: | 617-48-1.mol |
|
DL-Malic acid Chemical Properties
| Melting point | 131-133 °C(lit.) |
| Boiling point | 150℃[at 101 325 Pa] |
| density | 1,609 g/cm3 |
| vapor density | 4.6 (vs air) |
| vapor pressure | <0.1 mm Hg ( 20 °C) |
| FEMA | 2655 | L-MALIC ACID |
| Fp | 203°C |
| storage temp. | Refrigerator |
| solubility | methanol: 0.1 g/mL, clear, colorless |
| pka | pK1:3.458;pK2:5.097 (25°C) |
| form | Solid |
| color | White to Off-White |
| Water Solubility | 500g/L at 25℃ |
| Stability: | Stable. Incompatible with strong oxidizing agents, strong bases, amines, alkali metals, carbonates. |
| LogP | -1.3 at 24℃ |
| CAS DataBase Reference | 617-48-1(CAS DataBase Reference) |
| EPA Substance Registry System | Butanedioic acid, hydroxy-(617-48-1) |
Safety Information
| Hazard Codes | Xn |
| Risk Statements | 22-37/38-41-42/43-34 |
| Safety Statements | 26-39 |
| WGK Germany | 1 |
| RTECS | ON7175000 |
DL-Malic acid Usage And Synthesis
| Description | White or nearly white, crystalline powder or granules having a strongly acid taste. One g dissolves in 0.8 mL of water and in 1.4 mL of alcohol. Its solutions are optically inactive. It melts at about 130°. |
| Chemical Properties | white crystalline powder |
| Uses | DL-malic acid is primarily used in the food and beverage industry. |
| Definition | ChEBI: Malic acid is a 2-hydroxydicarboxylic acid that is succinic acid in which one of the hydrogens attached to a carbon is replaced by a hydroxy group. It has a role as a food acidity regulator and a fundamental metabolite. It is a 2-hydroxydicarboxylic acid and a C4-dicarboxylic acid. It is functionally related to a succinic acid. It is a conjugate acid of a malate(2-) and a malate. |
| Application | DL-Malic acid is used as a food additive. It is a component of some artificial vinegar flavors. Further, it is used in the preparation of chiral compounds, including κ-opioid rece. It is utilized for chiral resolution by ligand-exchange capillary electrophoresis. |
| Flammability and Explosibility | Non flammable |
| Purification Methods | Crystallise the acid from acetone, then from acetone/CCl4, or from ethyl acetate by adding pet ether (b 60-70o). Dry it at 35o under 1mm pressure to avoid formation of the anhydride. [Beilstein 3 IV 1124.] |
DL-Malic acid Preparation Products And Raw materials
| Raw materials | Calcium carbonate-->Maleic anhydride-->Maleic acid-->Fumaric acid |
| Preparation Products | Fluorescent Brightener 135-->Oxaloacetic acid-->3-oxopropanoic acid-->Isocytosine-->7,8-Dihydroxycoumarin-->2-dihydroxyphosphinoyloxyacrylic acid-->CHLOROSUCCINIC ACID-->2-Hydroxypropanoic acid-->Diethyl malate-->2,4-Diaminopyrimidine-->Glycolic acid |
