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526-84-1

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Basic Information
CAS No.: 526-84-1
Name: DIHYDROXYFUMARIC ACID
Molecular Structure:
Molecular Structure of 526-84-1 (DIHYDROXYFUMARIC ACID)
Formula: C4H4 O6
Molecular Weight: 148.072
Synonyms: 2-Butenedioicacid, 2,3-dihydroxy-, (Z)-; Maleic acid, dihydroxy- (6CI,7CI,8CI);Dihydroxymaleic acid
Density: 1.4734 (rough estimate)
Melting Point: 155°C (rough estimate)
Boiling Point: 188.61°C (rough estimate)
Flash Point: 210.2oC
Safety: A storage hazard. It may explode in a sealed container. Slowly decomposes to release carbon dioxide. When heated to decomposition it emits acrid smoke and fumes.
PSA: 115.06000
LogP: -0.51680
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Chemistry

Chemistry informtion about Dihydroxymaleic Acid (CAS NO.526-84-1) is:
IUPAC Name: 3,4,4-Trihydroxy-2-Oxobut-3-Enoic Acid
Synonyms: Dihydroxybutenedioic Acid ; Dihydroxyfumaric Acid ; Dihydroxymaleic Acid ; (E)-Dihydroxybutenedioic Acid ; 2,3-Dihydroxymaleic Acid ; (Z)-2,3-Dihydroxy-2-Butenedioic Acid
MF: C4H4O6
MW: 148.07
EINECS: 208-397-4 
Density: 1.767 g/cm3
Melting Point: 156 °C (dec.)(lit.)
Flash Point: 210.2 °C
Boiling Point: 400.5 °C at 760 mmHg
Vapour Pressure: 4.44E-08 mmHg at 25°C 
Enthalpy of Vaporization: 75.29 kJ/mol
Refractive Index: 2-8°C
Following is the molecular structure of Dihydroxymaleic Acid (CAS NO.526-84-1) is:

Safety Profile

A storage hazard. It may explode in a sealed container. Slowly decomposes to release carbon dioxide. When heated to decomposition it emits acrid smoke and fumes. 
Safety Statements:
S22:Do not breathe dust. 
S24/25:Avoid contact with skin and eyes.
WGK Germany: 3