27606

DL-Malic acid

meets analytical specification of FCC, E296, 99-100.5% (alkalimetric)

• Synonyme(s) : (±)-2-Hydroxysuccinic acid, DL-Hydroxybutanedioic acid
• Formule linéaire : HO₂CCH₂CH(OH)CO₂H
• CAS Number: 6915-15-7
• Poids moléculaire : 134.09
• Beilstein: 1723539
• Numéro CE : 230-022-8
• Numéro MDL: MFCD00064212
• Code UNSPSC : 12352106
• ID de substance PubChem : 57648231
• Nomenclature NACRES : NA.25

Propriétés

• Densité de vapeur: 4.6 (vs air)
• Niveau de qualité: 200
• Pression de vapeur: <0.1 mmHg ( 20 °C)
• Essai: 99-100.5% (alkalimetric)
• Forme: solid
• Activité optique: [α]/D −0.10 to +0.10°
• Température d'inflammation spontanée: 644 °F
• Qualité: meets analytical specification of FCC, E296
• Technique(s): IR spectroscopy: suitable
• Impuretés: ≤0.05% maleic acid; ≤0.1% water insoluble matter; ≤1% fumaric acid
• Résidus de calcination: ≤0.1% (as SO₄)
• Pf: 129-133 °C; 131-133 °C (lit.)
• Solubilité: acetone: soluble 17.75 g/ 100 gm at 20 °C; 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; benzene: insoluble
• Traces de cations: As: ≤3 mg/kg; Hg: ≤1 mg/kg; Pb: ≤2 mg/kg
• Adéquation: complies for identity (IR)
• Application(s): pharmaceutical (small molecule)
• Chaîne SMILES: OC(CC(O)=O)C(O)=O
• InChI: 1S/C4H6O5/c5-2(4(8)9)1-3(6)7/h2,5H,1H2,(H,6,7)(H,8,9)
• Clé InChI: BJEPYKJPYRNKOW-UHFFFAOYSA-N

Description

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.

Actions biochimiques/physiologiques

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.

Informations sur la sécurité

• Pictogrammes: GHS07
• Mention d'avertissement: Warning
• Mentions de danger: H319
• Conseils de prudence: P264 - P280 - P305 + P351 + P338 - P337 + P313
• Classification des risques: Eye Irrit. 2
• Code de la classe de stockage: 11 - Combustible Solids
• Classe de danger pour l'eau (WGK): WGK 1
• Point d'éclair (°F): 397.4 °F
• Point d'éclair (°C): 203 °C
• Équipement de protection individuelle: dust mask type N95 (US), Eyeshields, Gloves