Maleic acid(110-16-7) IR1
Product NameMaleic acid
CAS110-16-7
Molecular FormulaC4H4O4
Molecular Weight116.07
InChIInChI=1S/C4H4O4/c5-3(6)1-2-4(7)8/h1-2H,(H,5,6)(H,7,8)/b2-1-
InChIKey VZCYOOQTPOCHFL-UPHRSURJSA-N
SmilesC(O)(=O)/C=C\C(O)=O
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MassMS-IW-4644 maleic acid C4H4O4 (Mass of molecular ion: 116)
Source Temperature: 150 °C Sample Temperature: 130 °C Direct, 75 eV
15.0 1.5 17.0 3.2 18.0 16.6 24.0 1.2 25.0 6.5 26.0 46.2 27.0 36.5 28.0 9.7 29.0 8.1 37.0 1.0 41.0 4.7 42.0 3.6 43.0 5.8 44.0 12.5 45.0 66.6 46.0 16.8 52.0 1.9 53.0 16.9 54.0 34.0 55.0 32.8 56.0 1.3 69.0 2.0 70.0 1.8 71.0 14.5 72.0 100.0 73.0 4.3 81.0 1.5 82.0 1.9 98.0 22.7 99.0 30.9 100.0 1.6 116.0 2.2 117.0 1.2
400 MHz in DMSO-d6
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1H NMR 399.65 MHz C4 H4 O4 0.041 g : 0.5 ml DMSO-d6 maleic acid 
Assign. Shift(ppm)
A 11. B 6.285
Hz ppm Int.2511.95 6.286 1000
in DMSO-d6
nujol mull
