27606

DL-Apfelsäure

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

• Synonym(e): (±)-2-Hydroxysuccinsäure, DL-Hydroxybutandisäure
• Lineare Formel: HO₂CCH₂CH(OH)CO₂H
• CAS-Nummer: 6915-15-7
• Molekulargewicht: 134.09
• Beilstein: 1723539
• EG-Nummer: 230-022-8
• MDL-Nummer: MFCD00064212
• UNSPSC-Code: 12352106
• PubChem Substanz-ID: 57648231
• NACRES: NA.25

Eigenschaften

• Dampfdichte: 4.6 (vs air)
• Qualitätsniveau: 200
• Dampfdruck: <0.1 mmHg ( 20 °C)
• Assay: 99-100.5% (alkalimetric)
• Form: solid
• Optische Aktivität: [α]/D −0.10 to +0.10°
• Selbstzündungstemp.: 644 °F
• Qualität: meets analytical specification of FCC, E296
• Methode(n): IR spectroscopy: suitable
• Verunreinigungen: ≤0.05% maleic acid; ≤0.1% water insoluble matter; ≤1% fumaric acid
• Glührückstand: ≤0.1% (as SO₄)
• mp (Schmelzpunkt): 129-133 °C; 131-133 °C (lit.)
• Löslichkeit: 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
• Kationenspuren: As: ≤3 mg/kg; Hg: ≤1 mg/kg; Pb: ≤2 mg/kg
• Eignung: complies for identity (IR)
• Anwendung(en): pharmaceutical (small molecule)
• SMILES String: 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)
• InChIKey: BJEPYKJPYRNKOW-UHFFFAOYSA-N

Beschreibung

Anwendung

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. Wirkung

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.

Sicherheitshinweise

• Piktogramme: GHS07
• Signalwort: Warning
• H-Sätze: H319
• P-Sätze: P264 - P280 - P305 + P351 + P338 - P337 + P313
• Gefahreneinstufungen: Eye Irrit. 2
• Lagerklassenschlüssel: 11 - Combustible Solids
• WGK: WGK 1
• Flammpunkt (°F): 397.4 °F
• Flammpunkt (°C): 203 °C
• Persönliche Schutzausrüstung: dust mask type N95 (US), Eyeshields, Gloves