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498-23-7

Name Citraconic acid
CAS 498-23-7
EINECS(EC#) 207-858-7
Molecular Formula C5H6O4
MDL Number MFCD00078086
Molecular Weight 130.1
MOL File 498-23-7.mol
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Chemical Properties

Appearance white to light beige crystalline powder
Melting point  88-94 °C (lit.)
Boiling point  160.75°C (rough estimate)
density  1,62 g/cm3
refractive index  1.4502 (estimate)
storage temp.  Hygroscopic, -20°C Freezer, Under inert atmosphere
solubility  DMSO (Sparingly, Sonicated), Water (Slightly)
form  Crystalline Powder
pka pK1:2.29(0);pK2:6.15(+1) (25°C)
color  White to light beige
Water Solubility  FREELY SOLUBLE
Sensitive  Hygroscopic
Merck  14,2321
BRN  1722679
Stability: Hygroscopic
CAS DataBase Reference 498-23-7(CAS DataBase Reference)
NIST Chemistry Reference 2-Butenedioic acid, 2-methyl-, (Z)-(498-23-7)

Safety Data

Hazard Codes  Xn
Risk Statements 
R22:Harmful if swallowed.
R36/37/38:Irritating to eyes, respiratory system and skin .
Safety Statements 
S36:Wear suitable protective clothing .
S37/39:Wear suitable gloves and eye/face protection .
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
RIDADR  2811
WGK Germany  3
RTECS  GE6650000
HazardClass  6.1(b)
PackingGroup  III
HS Code  29171900
Toxicity
LD50 in rats, mice (mg/kg): 1320, 2260 orally (Jenner)

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