8.00380 EMD Millipore

Maleic acid

Maleic acid for synthesis. CAS 110-16-7, EC Number 203-742-5, chemical formula HOOCCH=CHCOOH., for synthesis

Synonym: cis-Butenedioic acid

  • CAS Number 110-16-7

  • Linear Formula C₄H₄O₄

  • Molecular Weight 116.07 g/mol

  •  EC Number 203-742-5



Related Categories Acids, Acids & Bases, Chemical Synthesis, Synthetic Reagents
packaging   25 kg in Fibre carton (8003809025)
vapor pressure   <0.1 hPa (20 °C)
solubility   478.8 g/l
density   1.59 g/cm3 (20 °C)
mp   130 - 135 °C
pH   1.3 (100 g/l, H₂O, 20 °C)
bulk density   750 - 800 kg/m3
LD 50 oral   LD50 Rat 708 mg/kg
LD 50 dermal   LD50 Rabbit 1560 mg/kg
shipped in   ambient
storage temp.   Store below +30°C.
specifications   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

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Safety Information

HS Code 
2917 19 80
Hazard Statement(s) 
H302 + H312: Harmful if swallowed or in contact with skin
H315: Causes skin irritation.
H317: May cause an allergic skin reaction.
H318: Causes serious eye damage.
H335: May cause respiratory irritation.
Precautionary Statement(s) 
P280: Wear protective gloves.
P280: Wear eye protection.
P302 + P352: IF ON SKIN: Wash with plenty of soap and water.
P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P313: Get medical advice/ attention.
Storage class 
10 - 13 Other liquids and solids
WGK 1 slightly water endangering
Relatively unreactive organic reagents should be collected in container A. If halogenated, they should be collected in container B. For solid residues use container C.
Hazard Pictogram(s) 
GHS05  GHS05
Hazard Pictogram(s) 
GHS07  GHS07
Hazard Symbols 
Harmful  Harmful
Declaration (railroad and road) ADR, RID 
Kein Gefahrgut
Declaration (transport by air) IATA-DGR 
No Dangerous Good
Declaration (transport by sea) IMDG-Code 
No Dangerous Good
Categories of danger 
harmful, irritant, sensitizing
R Phrase 
R 21/22-37/38-41-43
Harmful in contact with skin and if swallowed.Irritating to respiratory system and skin.Risk of serious damage to eyes.May cause sensitisation by skin contact.
S Phrase 
S 24/25-26-36/37/39
Avoid contact with skin and eyes.In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.Wear suitable protective clothing, gloves and eye/face protection.
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