| Identification | More | [Name]
DL-Malic acid | [CAS]
617-48-1 | [Synonyms]
(+/-)-2-HYDROXYSUCCINIC ACID
dl-2-hydroxybutanedioic acid
DL-APPLE ACID
DL-HYDROXYBUTANEDIOIC ACID
DL-HYDROXYSUCCINIC ACID
DL-HYDROXYSUCOINIC ACID
DL-HYROXYBUTANEDIOIC ACID
DL-MALATE
DL(+/-)-MALIC ACID
DL-MALIC ACID
(+/-)-HYDROXYBUTANEDIOIC ACID
(+/-)-HYDROXYSUCCINIC ACID
(+/-)-MALIC ACID
MALIC ACID
MALIC ACID, DL-
(+/-)-butanedioicaci
1-Hydroxy-1,2-ethanedicarboxylicacid
DL-MALIC ACID BIOSYNTH
DL-MALIC ACID 99%
DL-MALIC ACID 99-100.5% FCC | [EINECS(EC#)]
210-514-9 | [Molecular Formula]
C4H6O5 | [MDL Number]
MFCD00064212 | [Molecular Weight]
134.09 | [MOL File]
617-48-1.mol |
| Chemical Properties | Back Directory | [Appearance]
white crystalline powder | [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 | [Fp ]
203°C | [storage temp. ]
Refrigerator | [solubility ]
methanol: 0.1 g/mL, clear, colorless
| [form ]
Solid | [pka]
pK1:3.458;pK2:5.097 (25°C) | [color ]
White to Off-White | [Stability:]
Stable. Incompatible with strong oxidizing agents, strong bases, amines, alkali metals, carbonates. | [Water Solubility ]
500g/L at 25℃ | [LogP]
-1.3 at 24℃ | [CAS DataBase Reference]
617-48-1(CAS DataBase Reference) | [EPA Substance Registry System]
617-48-1(EPA Substance) |
| Safety Data | Back Directory | [Hazard Codes ]
Xn | [Risk Statements ]
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 Statements ]
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
|
| Hazard Information | Back Directory | [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. | [Flammability and Explosibility]
Nonflammable | [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.] |
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