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vapor pressure
<0.1 hPa ( 20 °C)
Quality Level
Assay
≥99% (acidimetric)
form
powder
potency
708 mg/kg LD50, oral (Rat)
1560 mg/kg LD50, skin (Rabbit)
pH
1.3 (20 °C, 100 g/L in H2O)
mp
130-135 °C (lit.)
solubility
478.8 g/L
density
1.59 g/mL at 25 °C (lit.)
bulk density
750‑800 kg/m3
storage temp.
2-30°C
SMILES string
OC(=O)\C=C/C(O)=O
InChI
1S/C4H4O4/c5-3(6)1-2-4(7)8/h1-2H,(H,5,6)(H,7,8)/b2-1-
InChI key
VZCYOOQTPOCHFL-UPHRSURJSA-N
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Application
- Food industry metabolomics: Maleic acid is identified as a key metabolite in the profiling of jelly fungi, aiding in the determination of biomarkers for different flesh colors, which is vital for quality assessment in the food industry (Ye et al., 2024).
- Chromatography device innovation: Maleic acid contributes to the design and characterization of an electrochemically-modulated membrane chromatography device, enhancing the precision and functionality of separation technologies in analytical chemistry (Röcker et al., 2024).
Analysis Note
Melting range (lower value): ≥ 130 °C
Melting range (upper value): ≤ 135 °C
Assay (acidimetric): ≥ 99.0 %
Identity (IR): passes test
Signal Word
Danger
Hazard Statements
Precautionary Statements
Hazard Classifications
Acute Tox. 4 Dermal - Acute Tox. 4 Oral - Eye Dam. 1 - Skin Corr. 1 - Skin Sens. 1 - STOT SE 3
Target Organs
Respiratory system
WGK
WGK 1
Certificates of Analysis (COA)
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