617-48-1 - Names and IdentifiersNameDL-Malic acidSynonymsC00711Malic acidDL-Malic acidMALIC ACI
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| Name | DL-Malic acid |
| Synonyms | C00711 Malic acid DL-Malic acid MALIC ACID, DL- Malicacidpfelsure Musashi-no-Ringosan DL-Hydroxysuccinic acid 2-hydroxybutanedioic acid (2R)-2-hydroxybutanedioate |
| CAS | 617-48-1 6915-15-7 |
| EINECS | 210-514-9 |
| InChI | InChI=1/C4H6O5/c5-2(4(8)9)1-3(6)7/h2,5H,1H2,(H,6,7)(H,8,9)/p-2/t2-/m1/s1 |
| Molecular Formula | C4H6O5 |
| Molar Mass | 134.09 |
| Density | 1,609 g/cm3 |
| Melting Point | 131-133°C(lit.) |
| Boling Point | 150℃[at 101 325 Pa] |
| Specific Rotation(α) | [α]D20 -0.5～+0.5° (c=5, H2O) |
| Flash Point | 203°C |
| Water Solubility | 500g/L at 25℃ |
| Solubility | Soluble in water, alcohol, slightly soluble in ether, insoluble in benzene. |
| Vapor Presure | <0.1 mm Hg ( 20 °C) |
| Vapor Density | 4.6 (vs air) |
| Appearance | White crystal or crystalline powder |
| Color | White to Off-White |
| pKa | pK1:3.458;pK2:5.097 (25°C) |
| Storage Condition | Refrigerator |
| Stability | Stable. Incompatible with strong oxidizing agents, strong bases, amines, alkali metals, carbonates. |
| Sensitive | Sensitive to light |
| MDL | MFCD00064212 |
| Physical and Chemical Properties | Character malic acid is stable under normal conditions, and has hygroscopicity when humidity is high. Triclinic white crystals. melting point 130 ℃ relative density 1.601 soluble in methanol, ethanol, acetone and many other polar solvents. |
| Use | Food industry used as acidulants, color retention agents, preservatives and emulsion stabilizers such as egg yolk, also used in pharmaceutical |
| Hazard Symbols | Xn - Harmful |
| Risk Codes | R22 - Harmful if swallowed R37/38 - Irritating to respiratory system and skin. R41 - Risk of serious damage to eyes R42/43 - May cause sensitization by inhalation and skin contact. R34 - Causes burns |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S39 - Wear eye / face protection. |
| WGK Germany | 1 |
| RTECS | ON7175000 |
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