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| Product Name: | Malic acid | Other Name: | Butanedioic acid,2-hydroxy-;Malic acid;Butanedioic acid,hydroxy-;2-Hydroxybutanedioic acid;α-Hydroxysuccinic acid;Hydroxysuccinic acid;2-Hydroxyethane-1,2-dicarboxylic acid;Pomalus Acid;Deoxytetraric acid;2-Hydroxysuccinic acid;Musashi-no-Ringosan;Hydroxybutanedioic acid;dl-Malic acid;FDA 2018;(±)-Malic acid;DL-Malic acid;R,S(±)-Malic acid;E 296;NSC 25941;Nanoveson M;Xeros;Monohydroxybutanedioic acid;Purac Powder MA;Purac MA;617-48-1;41308-42-3;623158-98-5;879715-44-3;1334703-48-8 |
| CAS No.: | 6915-15-7 | Molecular Formula: | C4H6O5 |
| InChIKeys: | InChIKey=BJEPYKJPYRNKOW-UHFFFAOYSA-N | Molecular Weight: | 134.09 |
| Exact Mass: | 134.09 | BRN: | 1723539 |
| EC Number: | 210-514-9 | NSC Number: | 25941 |
| DSSTox ID: | DTXSID0027640 | Color/Form: | Colorless crystals|White, crystalline triclinic crystals |
| HScode: | 29181980 | Categories: | Acidity Regulators |
| PSA: | 94.8 | XLogP3: | -1.26 |
| Appearance: | DryPowder; OtherSolid, Liquid | Density: | 1.601 g/ cu cm at 20 deg C |
| Melting Point: | 131 °C | Boiling Point: | 167.16°C (rough estimate) |
| Flash Point: | 203 °C | Water Solubility: | H2O: 558 g/L (20 ºC);methanol: 0.1 g/mL, clear, colorless |
| Storage Conditions: | 2-8°C | Vapor Pressure: | <0.1 mm Hg ( 20 °C) |
| Vapor Density: | 4.6 (vs air) | Toxicity: | 3200 mg/kg”>LD50 orally in Rabbit: > 3200 mg/kg |
| Odor: | Characteristic | Taste: | Smoothly tart |
| PH: | pH of a 0.001% aqueous solution is 3.80, that of 0.1% solution is 2.80, and that of a 1.0% solution is 2.34 | Henrys Law Constant: | Henry’s Law constant = 8.4X10-13 atm-cu m/mol at 25 °C (est) |
| Dissociation Constants: | Ionization constants: K1 = 4X10-4; K2 = 9X10-6|pKa1 = 3.51; pKa2 = 5.03 at 20 °C /OECD Guideline 112 (Dissociation Constants in Water)/ | Collision Cross Section: | 115.9 Ų [M-H]- [CCS Type: DT, Method: single field calibrated with ESI Low Concentration Tuning Mix (Agilent)] |
| Experimental Properties: | Nearly odorless (sometimes a faint, acrid odor) /L-Malic Acid/|Exhibits isomeric forms (dl, l, and d)|Density: 1.601 (d or l form); MP: 128 °C (d or l form); BP: 140 °C with decomposition (d or l form)|Crystals from acetone, or acetone + chloroform; mp 100 °C; Decomposes at about 140 °C; specific optical rotation: -2.3 deg (conc = 8.5 g 1100 ml water); Solubilities at 20 °C: 60.66 g/100 g acetone, 74.35 g/100 g dioxane, 36.35 g/100 g water, practically insoluble in benzene, 197.22 g/100 g methanol, 2.70 g/100 g diethyl ether, 86.60 g/100 ethanol; L-(-)-Form/|BUFFERING INDEX: 3.26|SPECIFIC OPTICAL ROTATION: -5.7 DEG /L-FORM/, +5.2 DEG /D-FORM/ @ 18 °C (IN ACETONE) | Heat of Combustion: | -1.340 MJ/mol at 20 °C |
Classification of the substance or mixture
Eye irritation, Category 2
GHS label elements, including precautionary statements
| Pictogram(s) |  |
|---|---|
| Signal word |
Warning |
| Hazard statement(s) |
H319 Causes serious eye irritation |
| Precautionary statement(s) | |
| Prevention |
P264 Wash … thoroughly after handling. P280 Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/… |
| Response |
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. |
| Storage |
none |
| Disposal |
none |
Other hazards which do not result in classification
no data available
Precautions for safe handling
Handling in a well ventilated place. Wear suitable protective clothing. Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use non-sparking tools. Prevent fire caused by electrostatic discharge steam.
Conditions for safe storage, including any incompatibilities
Keep container tightly closed in a dry and well-ventilated place. Storage class (TRGS 510): Non Combustible Solids.