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137-09-7

Basic Information
CAS No.: 137-09-7
Name: 2,4-Diaminophenol dihydrochloride
Article Data: 4
Molecular Structure:
Molecular Structure of 137-09-7 (2,4-Diaminophenol dihydrochloride)
Formula: C6H8N2O.2(HCl)
Molecular Weight: 197.064
Synonyms: Amidol(6CI);Phenol, 2,4-diamino-, dihydrochloride (8CI,9CI);2,4-Diaminophenol hydrochloride;Acrol;Diamidophenolhydrochloride;Dianol;
EINECS: 205-279-4
Density: 1.343 g/cm3
Melting Point: 222 °C (dec.)(lit.)
Boiling Point: 347.4 °C at 760 mmHg
Flash Point: 163.9 °C
Solubility: 27.5 g/100 mL (15 °C) in water
Appearance: Grey white powder
Hazard Symbols: HarmfulXn, IrritantXi
Risk Codes: 22-36/37/38
Safety: 26-36
Transport Information: UN 2811 6.1/PG 3
PSA: 72.27000
LogP: 3.32300
Synthetic route
51-28-5

2,4-Dinitrophenol

137-09-7

2,4-diaminophenol dihydrochloride

Conditions
ConditionsYield
With hydrogenchloride91.5%
With hydrogenchloride; tin faellt aus der filtrieren Fluessigkeit durch konz.Salzsaeure;
With tin In hydrogenchloride Yield given;
1878-66-6

4-chlorophenylacetic Acid

137-09-7

2,4-diaminophenol dihydrochloride

381200-35-7

2-(4-chlorobenzyl)-5-aminobenzoxazole

Conditions
ConditionsYield
With PPA at 195 - 198℃; for 1.5h;100%
With polyphosphoric acid at 200℃; for 1.5h;75%
With PPA Heating;
137-09-7

2,4-diaminophenol dihydrochloride

65-85-0

benzoic acid

41373-37-9

5-amino-2-phenyl-1,3-benzoxazole

Conditions
ConditionsYield
PPA at 110 - 180℃; for 3h;97%
With polyphosphoric acid at 110 - 180℃;97%
With PPA at 110 - 180℃; for 4h;63%
137-09-7

2,4-diaminophenol dihydrochloride

98-73-7

4-(1,1-dimethylethyl)benzoic acid

293738-21-3

2-(4-tert-butylphenyl)benzo[d]oxazole-5-amine

Conditions
ConditionsYield
With polyphosphoric acid (PPA) at 180℃;94%
With polyphosphoric acid (PPA) at 180℃;94%
In various solvent(s) for 2.5h; Heating;
13139-17-8

N-(Benzyloxycarbonyloxy)succinimide

137-09-7

2,4-diaminophenol dihydrochloride

1360875-58-6

dibenzyl 4-hydroxy-1,3-phenylenedicarbamate

Conditions
ConditionsYield
With pyridine for 18h;94%
137-09-7

2,4-diaminophenol dihydrochloride

99-94-5

p-Toluic acid

54995-50-5

2-(4-methylphenyl)-5-aminobenzoxazole

Conditions
ConditionsYield
With polyphosphoric acid at 170℃; for 1.5h;92%
With polyphosphoric acid at 170 - 200℃;
With polyphosphoric acid at 160 - 220℃; for 0.1h;
With polyphosphoric acid at 160 - 190℃; for 3h;
137-09-7

2,4-diaminophenol dihydrochloride

1878-68-8

2-(4-bromophenyl)-acetic acid

1016836-17-1

2-(4-bromobenzyl)-5-aminobenzoxazole

Conditions
ConditionsYield
With polyphosphoric acid at 200℃; for 1.5h;89%
With PPA Heating;
With polyphosphoric acid at 160 - 220℃; for 0.1h;
456-22-4

4-Fluorobenzoic acid

137-09-7

2,4-diaminophenol dihydrochloride

116248-10-3

2-(4-fluorophenyl)benzo[d]oxazol-5-amine

Conditions
ConditionsYield
With polyphosphoric acid at 200℃; for 2h;86%
With PPA for 2.5h; Heating;
In various solvent(s) for 2.5h; Heating;
137-09-7

2,4-diaminophenol dihydrochloride

535-80-8

3-chlorobenzoate

54995-52-7

2-(3-chlorophenyl)benzo[d]oxazol-5-amine

Conditions
ConditionsYield
With polyphosphoric acid at 120 - 170℃;86%

5,6-bis(2,6-diisopropylphenyloxy)-1,3-diiminoisoindoline

137-09-7

2,4-diaminophenol dihydrochloride

C102H113N7O7

Conditions
ConditionsYield
With N-ethyl-N,N-diisopropylamine at 120℃; for 5.5h;85%
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Specification

The CAS register number of Amidol is 137-09-7. It also can be called as Phenol, 2,4-diamino-, dihydrochloride and the IUPAC name about this chemical is 2,4-diaminophenol dihydrochloride. The molecular formula about this chemical is C6H8N2O.2(HCl) and the molecular weight is 197.06. It belongs to the Industrial/Fine Chemicals. This chemical is stable but it is incompatible with strong oxidizing agents, acids. It is heat sensitive and light sensitive.

Physical properties about Amidol are: (1)ACD/LogP: -1.29; (2)# of Rule of 5 Violations: 1; (3)ACD/LogD (pH 5.5): -1.54; (4)ACD/LogD (pH 7.4): -1.29; (5)ACD/BCF (pH 5.5): 1; (6)ACD/BCF (pH 7.4): 1; (7)ACD/KOC (pH 5.5): 2.68; (8)ACD/KOC (pH 7.4): 4.68; (9)#H bond acceptors: 3; (10)#H bond donors: 5; (11)#Freely Rotating Bonds: 3; (12)Polar Surface Area: 15.71Å2; (13)Flash Point: 163.9 °C; (14)Enthalpy of Vaporization: 61.51 kJ/mol; (15)Boiling Point: 347.4 °C at 760 mmHg; (16)Vapour Pressure: 2.68E-05 mmHg at 25°C.

The Amidol is a dihydrogen chloride salt and is used as a photographic developer. Prints developed in this chemical are typically a very warm brown-black colour, but overdevelopment can quickly lead to chemical fogging. This chemical can be produced by the reaction of 2,4 - dinitrophenol reduction.

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

You can still convert the following datas into molecular structure:
(1)SMILES: Cl.Cl.Oc1ccc(N)cc1N
(2)InChI: InChI=1/C6H8N2O.2ClH/c7-4-1-2-6(9)5(8)3-4;;/h1-3,9H,7-8H2;2*1H
(3)InChIKey: KQEIJFWAXDQUPR-UHFFFAOYAV
(4)Std. InChI: InChI=1S/C6H8N2O.2ClH/c7-4-1-2-6(9)5(8)3-4;;/h1-3,9H,7-8H2;2*1H
(5)Std. InChIKey: KQEIJFWAXDQUPR-UHFFFAOYSA-N

The toxicity data is as follows:

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
mouse LDLo intraperitoneal 50mg/kg (50mg/kg)   Revue Belge de Pathologie et de Medecine Experimentale. Vol. 22, Pg. 1, 1952.
rat LD50 oral 240mg/kg (240mg/kg) SENSE ORGANS AND SPECIAL SENSES: PTOSIS: EYE

BEHAVIORAL: ATAXIA

GASTROINTESTINAL: "HYPERMOTILITY, DIARRHEA"
Journal of the American College of Toxicology. Vol. 13, Pg. 330, 1994.

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