DL-Malic acid
SIGMA/27606 - meets analytical specification of FCC, E296, 99-100.5% (alkalimetric)
Synonym: (±)
CAS Number: 6915-15-7
Empirical Formula (Hill Notation): C4H6O5
Molecular Weight: 134.09
EC Number: 230-022-8
MDL Number: MFCD00064212
Linear Formula: HO2CCH2CH(OH)CO2H
Product Type: Chemical
| application(s) | pharmaceutical (small molecule) |
| assay | 99-100.5% (alkalimetric) |
| autoignition temp. | 644 °F |
| cation traces | As: ≤3 mg/kg |
| Hg: ≤1 mg/kg | |
| Pb: ≤2 mg/kg | |
| form | solid |
| ign. residue | ≤0.1% (as SO4) |
| impurities | ≤0.05% maleic acid |
| ≤0.1% water insoluble matter | |
| ≤1% fumaric acid | |
| InChI | 1S/C4H6O5/c5-2(4(8)9)1-3( |
| InChI key | BJEPYKJPYRNKOW-UHFFFAOYSA |
| mp | 129-133 °C |
| 131-133 °C (lit.) | |
| optical activity | [α]/D −0.10 to +0.10° |
| quality | meets analytical specification of FCC, E296 |
| Quality Level | 200  |
| SMILES string | OC(CC(O)=O)C(O)=O |
| solubility | acetone: soluble 17.75 g/ 100 gm at 20 °C |
| benzene: insoluble | |
| diethyl ether: soluble 0.84 g/100 gm at 20 °C | |
| dioxane: soluble 22.70 g/100 gm at 20 °C | |
| ethanol: soluble 45.53 g/100 gm at 20 °C | |
| methanol: soluble 82.70 g/100 g at 20 °C | |
| water: soluble 55.8 g/100 gm at 20 °C | |
| suitability | complies for identity (IR) |
| technique(s) | IR spectroscopy: suitable |
| vapor density | 4.6 (vs air) |
| vapor pressure | <0.1 mmHg ( 20 °C) |
| Application: | DL-Malic acid is an organic acid used for studying the impact on ultrasound pasteurization. It has also been used to culture Pichia membraneafaciens. |
| Biochem/physiol Actions: | Malic acid is a dicarboxylic acid and an important regulatory metabolite. It has been implicated in process of fruit ripening. Malic acid is important for the starch metabolism; low malic acid content results in transient accumulation of starch. Mitochondrial-malate metabolism modulates ADP-glucose pyrophosphorylase activity and redox status of plastids. |
| Symbol |  GHS07 |
| Signal word | Warning |
| Hazard statements | H319 |
| Precautionary statements | P264 - P280 - P305 + P351 + P338 - P337 + P313 |
| Hazard Codes | Xi |
| Risk Statements | 36 |
| Safety Statements | 26 |
| RIDADR | NONH for all modes of transport |
| WGK Germany | WGK 3 |
| Flash Point(F) | 397.4 °F |
| Flash Point(C) | 203 °C |
| Purity | 99-100.5% (alkalimetric) |
| mp | 129-133 °C; 131-133 °C (lit.) |
| UNSPSC | 12352106 |