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110-16-7

Name Maleic acid
CAS 110-16-7
EINECS(EC#) 203-742-5
Molecular Formula C4H4O4
MDL Number MFCD00063177
Molecular Weight 116.07
MOL File 110-16-7.mol

Chemical Properties

Appearance Maleic acid is a white crystalline solid. Faint, acid like odor.
Melting point  130-135 °C (lit.)
Boiling point  275°C
density  1.59 g/mL at 25 °C(lit.)
vapor pressure  0.001Pa at 20℃
refractive index  1.5260 (estimate)
Fp  127 °C
storage temp.  Store at RT.
solubility  478.8g/l
form  Powder/Solid
pka 1.83(at 25℃)
color  White
Specific Gravity 1.59
PH 1.3 (100g/l, H2O, 20℃)
Stability: Stable. Combustible. Incompatible with strong oxidizing agents, bases.
Water Solubility  790 g/L (25 ºC)
Merck  14,5703
BRN  605762
InChIKey VZCYOOQTPOCHFL-OWOJBTEDSA-N
LogP -1.3 at 20℃
Uses
Maleic acid is an industrial raw material for the production of glyoxylic acid by ozonolysis.
Maleic acid may be used to form acid addition salts with drugs to make them more stable, such as indacaterol maleate.
CAS DataBase Reference 110-16-7(CAS DataBase Reference)
NIST Chemistry Reference 2-Butenedioic acid (Z)-(110-16-7)
EPA Substance Registry System Maleic acid (110-16-7)

Safety Data

Hazard Codes  Xn
Risk Statements 
R22:Harmful if swallowed.
R36/37/38:Irritating to eyes, respiratory system and skin .
Safety Statements 
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S28:After contact with skin, wash immediately with plenty of ... (to be specified by the manufacturer) .
S37:Wear suitable gloves .
RIDADR  3261
WGK Germany  1
RTECS  OM9625000
TSCA  Yes
HazardClass  8
PackingGroup  III
HS Code  29171900
Safety Profile
Moderately toxic by ingestion and skin contact. Passes through intact skin. A skin and severe eye irritant and a corrosive. Believed to be more toxic than its isomer, fumeric acid. Combustible when exposed to heat or flame. When heated to decomposition it emits acrid smoke and irritating fumes.
Hazardous Substances Data 110-16-7(Hazardous Substances Data)

Hazard Information

Material Safety Data Sheet(MSDS)

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