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89-86-1

Basic Information
CAS No.: 89-86-1
Name: 2,4-Dihydroxybenzoic acid
Article Data: 104
Molecular Structure:
Molecular Structure of 89-86-1 (2,4-Dihydroxybenzoic acid)
Formula: C7H6O4
Molecular Weight: 154.122
Synonyms: beta-Resorcylicacid (8CI);4-Carboxyresorcinol;4-Hydroxysalicylicacid;Coupler 320;NSC 13564;NSC 4740;p-Hydroxysalicylic acid;beta-Resorcylic acid;
EINECS: 201-946-9
Density: 1.56 g/cm3
Melting Point: 225-227 °C
Boiling Point: 414.833 °C at 760 mmHg
Flash Point: 218.835 °C
Solubility: soluble in ethanol, diethyl ether and hot water
Appearance: cream to slightly beige or pink crystalline powder
Hazard Symbols: IrritantXi
Risk Codes: 36/37/38
Safety: 26-36-37/39
PSA: 77.76000
LogP: 0.79600
Synthetic route
108-46-3

recorcinol

89-86-1

4-hydroxysalicylic acid

Conditions
ConditionsYield
With hydrogenchloride; CO2; potassium carbonate In water96.7%
With potassium dicarbonate; water
With sodium hydrogencarbonate anschliessendes Einleiten von Kohlendioxid;
2517-43-3

3-methoxy butanol

108-46-3

recorcinol

89-86-1

4-hydroxysalicylic acid

Conditions
ConditionsYield
With hydrogenchloride; sodium hydroxide; CO2 In water95.4%
With CO2; potassium carbonate In water87.4%
95-01-2

2,4-Dihydroxybenzaldehyde

89-86-1

4-hydroxysalicylic acid

Conditions
ConditionsYield
With sodium chlorite; sodium methylate In dimethyl sulfoxide95%
With tert.-butylhydroperoxide; copper(ll) bromide In water; acetonitrile at 20℃; for 9h; Inert atmosphere; chemoselective reaction;91%
With dihydrogen peroxide; silver nitrate In acetonitrile at 50℃; for 1h; chemoselective reaction;90%
With potassium carbonate beim Schmelzen;
69-72-7

salicylic acid

89-86-1

4-hydroxysalicylic acid

Conditions
ConditionsYield
With dihydrogen peroxide In water at 20℃; for 1h; UV-irradiation; Green chemistry; regioselective reaction;92%
33617-59-3

1,3-dihydroxy-4-dihydroxymethyl benzene

89-86-1

4-hydroxysalicylic acid

Conditions
ConditionsYield
With tert.-butylhydroperoxide; copper(ll) bromide In water; dimethyl sulfoxide for 22h; Inert atmosphere; Reflux; chemoselective reaction;89%
89-84-9

2',4'-dihydroxy-4-acetophenone

89-86-1

4-hydroxysalicylic acid

Conditions
ConditionsYield
With N-bromophthalimide; mercury(II) diacetate In chloroform at 20℃; for 2h;86%
Multi-step reaction with 2 steps
1: iodine
2: aq.-ethanolic NaOH-solution
View Scheme
With dihydrogen peroxide In water at 22 - 25℃; for 11688h;
107-98-2

1-methoxy-2-propanol

89-86-1

4-hydroxysalicylic acid

Conditions
ConditionsYield
With hydrogenchloride; CO2; potassium carbonate In water85%
124-38-9

carbon dioxide

108-46-3

recorcinol

89-86-1

4-hydroxysalicylic acid

Conditions
ConditionsYield
With 1,8-diazabicyclo[5.4.0]undec-7-ene In acetonitrile at 30℃; under 15001.5 Torr; for 28h; Solvent; Reagent/catalyst; Kolbe-Schmidt Synthesis; Autoclave;84%
With water; sodium hydrogencarbonate at 100℃; for 3h; Kolbe-Schmidt Synthesis;64%
With potassium hydrogencarbonate In water for 4h; Reflux;
614-82-4

(2,4-dihydroxyphenyl)acetic acid

89-86-1

4-hydroxysalicylic acid

Conditions
ConditionsYield
With iodine; dimethyl sulfoxide at 120℃; for 28h; Sealed tube; Green chemistry;83%
108-24-7

acetic anhydride

89475-40-1

2,4,4'-Triacetoxy-3'-methoxy-chalkon

A

89-86-1

4-hydroxysalicylic acid

B

121-34-6

3-methoxy-4-hydroxybenzoic acid

Conditions
ConditionsYield
With ruthenium(IV) oxide; sodium periodate 1) 5 h, room temp., pyridine; 2) acetone, water, 20 min : decomposition reaction;A 54%
B 73%
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Reported in EPA TSCA Inventory.

Specification

The 2,4-Dihydroxybenzoic acid, with the CAS registry number 89-86-1, is also known as beta-Resorcylic acid. It belongs to the product categories of Intermediates of Dyes and Pigments; Fine Chemical & Intermediates; Aromatic Carboxylic Acids, Amides, Anilides, Anhydrides & Salts; Benzoic Acid Derivative; Organic acids; Building Blocks; C7; Carbonyl Compounds; Carboxylic Acids; Chemical Synthesis; Organic Building Blocks. Its EINECS number is 201-946-9. This chemical's molecular formula is C7H6O4 and molecular weight is 154.12. What's more, its systematic name is 2,4-Dihydroxybenzoic acid. Its classification code is Reproductive Effect. This chemical should be sealed and stored in a cool and dry place. It is used as an intermediate for dyestuffs and drugs. is a dihydroxybenzoic acid. As a resorcyclic acid, it is one of the three isomeric crystalline acids that are both carboxyl derivatives of resorcinol and dihydroxy derivatives of benzoic acid. It is a degradation product of cyanidin glycosides from tart cherries in cell cultures. It is also a metabolite found in human plasma after cranberry juice consumption. 

Physical properties of 2,4-Dihydroxybenzoic acid are: (1)ACD/LogP: 1.765; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): -1.08; (4)ACD/LogD (pH 7.4): -1.39; (5)ACD/BCF (pH 5.5): 1.00; (6)ACD/BCF (pH 7.4): 1.00; (7)ACD/KOC (pH 5.5): 1.00; (8)ACD/KOC (pH 7.4): 1.00; (9)#H bond acceptors: 4; (10)#H bond donors: 3; (11)#Freely Rotating Bonds: 3; (12)Polar Surface Area: 77.76 Å2; (13)Index of Refraction: 1.671; (14)Molar Refractivity: 36.946 cm3; (15)Molar Volume: 98.823 cm3; (16)Polarizability: 14.647×10-24cm3; (17)Surface Tension: 84.3 dyne/cm; (18)Density: 1.56 g/cm3; (19)Flash Point: 218.835 °C; (20)Enthalpy of Vaporization: 70.412 kJ/mol; (21)Boiling Point: 414.833 °C at 760 mmHg; (22)Vapour Pressure: 0 mmHg at 25°C.

Preparation: this chemical can be prepared by 2,4-dihydroxy-benzaldehyde. This reaction will need reagents NaClO2, CH3ONa and solvent dimethylsulfoxide. The yield is about 95%.

2,4-Dihydroxybenzoic acid can be prepared by 2,4-dihydroxy-benzaldehyde

Uses of 2,4-Dihydroxybenzoic acid: it can be used to produce 2,4-dihydroxy-benzoic acid methyl ester by heating. It will need reagent H2SO4 with the reaction time of 72 hours. The yield is about 100%.

2,4-Dihydroxybenzoic acid can be used to produce 2,4-dihydroxy-benzoic acid methyl ester by heating

When you are using this chemical, please be cautious about it as the following:
This chemical is irritating to eyes, respiratory system and skin. In case of contact with eyes, you should rinse immediately with plenty of water and seek medical advice. When using it, you need wear suitable protective clothing, gloves and eye/face protection.

You can still convert the following datas into molecular structure:
(1)SMILES: c1cc(c(cc1O)O)C(=O)O
(2)Std. InChI: InChI=1S/C7H6O4/c8-4-1-2-5(7(10)11)6(9)3-4/h1-3,8-9H,(H,10,11)
(3)Std. InChIKey: UIAFKZKHHVMJGS-UHFFFAOYSA-N

The toxicity data is as follows:  

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
mouse LD50 intraperitoneal > 800mg/kg (800mg/kg)   Journal of Pharmacology and Experimental Therapeutics. Vol. 196, Pg. 478, 1976.