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CAS No 139-85-5 , 3,4-dihydroxybenzaldehyde

  • Name: 3,4-dihydroxybenzaldehyde
  • Synonyms: Benzaldehyde; 139-85-5;3,4-Dihydroxybenzaldehyde;3,4-dihydroxybenzaldehyde; Rancinamycin IV; 3,4-Dihydroxybenzenecarbonal; PROTOCATECHUIC ALDEHYDE; Protocatechualdehyde; 3,4-dihydroxy-;
  • CAS Registry Number:
  • Transport: 25kgs
  • Melting Point: 152-157 ºC
  • Flash Point: 146.7°C
  • Boiling Point: 295.4°Cat760mmHg
  • Density: 1.409g/cm3
  • Refractive index: 1.674
  • Water Solubility: 50 G/L (20 ºC)
  • Safety Statements: R36/37/38
  • Hazard Symbols: Xi: Irritant;
  • HS Code: 29124900
  • Flash Point: 146.7°C
  • EINECS: 205-377-7
  • Molecular Weight: 138.12074
  • InchiKey: IBGBGRVKPALMCQ-UHFFFAOYSA-N
  • InChI: InChI=1S/C7H6O3/c8-4-5-1-2-6(9)7(10)3-5/h1-4,9-10H
  • Risk Statements: S26;S37/39
  • Molecular Formula: C7H6O3
  • Molecular Structure:CAS No:139-85-5 3,4-dihydroxybenzaldehyde

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References of 3,4-dihydroxybenzaldehyde
Title: Protocatechualdehyde
CAS Registry Number: 139-85-5
CAS Name: 3,4-Dihydroxybenzaldehyde
Synonyms: 3,4-dihydroxybenzenecarbonal; protocatechuic aldehyde; rancinamycin IV
Molecular Formula: C7H6O3
Molecular Weight: 138.12
Percent Composition: C 60.87%, H 4.38%, O 34.75%
Literature References: Prepn from catechol: Reimer, Tiemann, Ber. 9, 1268 (1876); Tiemann, Koppe, ibid. 14, 2015 (1881); from vanillin: Tiemann, Haarmann, ibid. 7, 620 (1874); from veratric aldehyde: Dreyfus, DE 193958; Frdl. 9, 161 (1908-10); from piperonal: Hoering, Baum, Ber. 41, 1914 (1908); Barger, J. Chem. Soc. 93, 563 (1908); Buck, Zimmerman, Org. Synth. coll. vol. II, 549 (1943).
Properties: Platelets from water or toluene. Dimorphic. Dec 153-154°. pK (25°) 7.55. Soly in water (g/100 ml): 5 (20°); 33 (99°); in ethanol: 79 (78°). Freely sol in ether.
pKa: pK (25°) 7.55