Chemical Properties of 3,5-dihydroxybenzoic acid (CAS 99-10-5)

3,5-dihydroxybenzoic acid

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InChI Key
Molecular Weight1
Other Names
  • 3,5-Dihydroxybenzoic acid
  • 5-Carboxyresorcinol
  • «alpha»-Resorcylic acid

Physical Properties

Property Value Unit Source
Δf -454.51 kJ/mol Joback Calculated Property
Δfgas -570.71 kJ/mol Joback Calculated Property
Δfus 25.18 kJ/mol Joback Calculated Property
Δsub 143.20 ± 1.80 kJ/mol NIST
Δvap 82.91 kJ/mol Joback Calculated Property
logPoct/wat 0.796 Crippen Calculated Property
Pc 8175.04 kPa Joback Calculated Property
Tboil 693.53 K Joback Calculated Property
Tc 922.45 K Joback Calculated Property
Tfus 529.26 K Joback Calculated Property
Vc 0.277 m3/kg-mol Joback Calculated Property

Temperature Dependent Properties

Property Value Unit Temperature (K) Source
Cp,gas 267.80 J/mol×K 693.53 Joback Calculated Property
η 0.0000008 Pa×s 693.53 Joback Calculated Property
ΔfusH 38.30 kJ/mol 508.3 NIST
ΔsubH 139.80 ± 1.80 kJ/mol 354.0 NIST

Molecular Descriptors

Joback and Reid Groups
=C< (ring) 3
-OH (alcohol) 1
>C=O (nonring) 1
-OH (phenol) 2
=CH- (ring) 3

Similar Compounds

Benzoic acid, 3-hydroxy-. Benzoic acid, 3,4,5-trihydroxy-. 3,5-Dimethoxybenzoic acid. 3,4-dihydroxybenzoic acid. 3-HO-C6H4-COOCH3. Benzoic acid, 3-methoxy-. 3-Hydroxy-4-methylbenzoic acid. gentisic acid. Ethyl 3-hydroxybenzoate. Benzoic acid, 3,5-dimethoxy-, methyl ester. 4-Methoxy-3,5-dihydroxybenzoic acid. Benzoic acid, 3,4-dihydroxy-, methyl ester. Benzoic acid, 4-chloro-3-hydroxy-. Benzoic acid, 3-hydroxy-, isopropyl ester. 3-CH3O-C6H4-COOCH3.

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