8.00380
Maleic acid
for synthesis
Synonym(s):
cis-Butenedioic acid, Toxilic acid
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About This Item
Linear Formula:
HO2CCH=CHCO2H
CAS Number:
Molecular Weight:
116.07
UNSPSC Code:
12352106
NACRES:
NA.22
EC Index Number:
203-742-5
MDL number:
Beilstein/REAXYS Number:
605762
Assay:
≥99% (acidimetric)
Form:
powder
vapor pressure
<0.1 hPa ( 20 °C)
Quality Segment
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
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
Assay (HPLC, area%): ≥ 99.0 % (a/a)
Melting range (lower value): ≥ 130 °C
Melting range (upper value): ≤ 135 °C
Assay (acidimetric): ≥ 99.0 %
Identity (IR): passes test
Melting range (lower value): ≥ 130 °C
Melting range (upper value): ≤ 135 °C
Assay (acidimetric): ≥ 99.0 %
Identity (IR): passes test
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signalword
Danger
target_organs
Respiratory system
Storage Class
8A - Combustible corrosive hazardous materials
wgk
WGK 1
Hazard Classifications
Acute Tox. 4 Dermal - Acute Tox. 4 Oral - Eye Dam. 1 - Skin Corr. 1B - Skin Sens. 1 - STOT SE 3
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