8.14737

DL-Malic acid

for synthesis

• Synonym(s): DL-Malic acid, DL-Hydroxysuccinic acid, Hydroxybutanedioic acid
• Empirical Formula (Hill Notation): C₄H₆O₅
• CAS Number: 6915-15-7
• Molecular Weight: 134.09
• MDL number: MFCD00064212
• UNSPSC Code: 12352106
• EC Index Number: 230-022-8
• NACRES: NA.22

Properties

• Quality Level: 200
• assay: ≥99.0% (acidimetric)
• form: solid
• autoignition temp.: 349 °C
• potency: >3200 mg/kg LD₅₀, oral (Rat)
• pH: 2.3 (20 °C, 10 g/L in H₂O)
• mp: 128-132 °C
• transition temp: flash point 203 °C
• solubility: 558 g/L
• density: 1.60 g/cm³ at 20 °C
• bulk density: 800 kg/m³
• storage temp.: 2-30°C
• InChI: 1S/C4H6O5/c5-2(4(8)9)1-3(6)7/h2,5H,1H2,(H,6,7)(H,8,9)
• InChI key: BJEPYKJPYRNKOW-UHFFFAOYSA-N

Description

Application

• Study on the inhibitory effect of DL‐malic acid on the phase structure and combustion characteristics of coal: This study examines the potential of DL-malic acid as an antioxidant inhibitor in the prevention of coal fires (Sun et al., 2024).

Analysis Note

Assay (acidimetric): ≥ 99.0 %
Melting range (lower value): ≥ 128 °C
Melting range (upper value): ≤ 132 °C
Identity (IR): passes test

Safety Information

• pictograms: GHS07
• signalword: Warning
• hcodes: H319
• pcodes: P264 - P280 - P305 + P351 + P338 - P337 + P313
• Hazard Classifications: Eye Irrit. 2
• Storage Class: 11 - Combustible Solids
• wgk_germany: WGK 3
• flash_point_f: 397.4 °F
• flash_point_c: 203 °C