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131-55-5

Basic Information
CAS No.: 131-55-5
Name: 2,2',4,4'-Tetrahydroxybenzophenone
Article Data: 26
Molecular Structure:
Molecular Structure of 131-55-5 (2,2',4,4'-Tetrahydroxybenzophenone)
Formula: C13H10O5
Molecular Weight: 246.219
Synonyms: Benzophenone, 2,2,4,4-tetrahydroxy-;2,2',4,4'-Tetrahydroxybenzophenone (UV-2);Eusorb UV-246;di(2,4-dihydroxyphenyl)methanone;BP-2;Sumisorb 150;Uvinul D-50;Methanone, bis (2,4-dihydroxyphenyl)-;2,2',4,4'-Tetrahydroxy benzophenone (Benzophenone 2);bis(2,4-dihydroxyphenyl)methanone;Methanone,bis(2,4-dihydroxyphenyl)-;Seesorb 106;2,2',4,4'-Tetrahydroxy Benzophenone;2,2',4,4'-Tetrahydroxybenzophenone (BP-2);2,2'4,4'Tetrahydroxy Benzophenone (UV Absorber D50);
EINECS: 205-028-9
Density: 1.526 g/cm3
Melting Point: 198-200 °C(lit.)
Boiling Point: 531.2 °C at 760 mmHg
Flash Point: 289.2 °C
Solubility: Slightly soluble in water.
Appearance: yellow to brown crystalline powder
Hazard Symbols: HarmfulXn,IrritantXi
Risk Codes: 22-36/37/38
Safety: 26-36-37/39
PSA: 97.99000
LogP: 1.74000
Synthetic route

carbonylbis(benzene-4,1,3-triyl) tetraacetate

131-55-5

2,2',4,4'-tetrahydroxybenzophenone

Conditions
ConditionsYield
With hydrogenchloride In water at 20 - 100℃; for 6h; Temperature; Autoclave; Large scale;82.1%
89-86-1

4-hydroxysalicylic acid

108-46-3

recorcinol

131-55-5

2,2',4,4'-tetrahydroxybenzophenone

Conditions
ConditionsYield
With zinc(II) chloride; trichlorophosphate at 65℃; for 3h; Inert atmosphere;73%
With zinc(II) chloride; trichlorophosphate
With zinc(II) chloride at 125 - 140℃;
151-10-0

1,3-Dimethoxybenzene

131-55-5

2,2',4,4'-tetrahydroxybenzophenone

Conditions
ConditionsYield
With aluminium trichloride; 1,2-dichloro-ethane
2.4-dioxy-2'.4'-diacetoxy-benzophenone-imide

2.4-dioxy-2'.4'-diacetoxy-benzophenone-imide

131-55-5

2,2',4,4'-tetrahydroxybenzophenone

Conditions
ConditionsYield
With sulfuric acid
With sodium hydroxide
fluorescein chloride

fluorescein chloride

A

131-55-5

2,2',4,4'-tetrahydroxybenzophenone

B

benzoic acid , 2',4'-dioxy-benzophenone-carboxylic acid-(2), resorcinol

benzoic acid , 2',4'-dioxy-benzophenone-carboxylic acid-(2), resorcinol

Conditions
ConditionsYield
With sodium hydroxide
131-54-4

bis(2-hydroxy-4-methoxyphenyl)-methanone

68-12-2, 33513-42-7

N,N-dimethyl-formamide

131-55-5

2,2',4,4'-tetrahydroxybenzophenone

Conditions
ConditionsYield
AlCl3
131-54-4

bis(2-hydroxy-4-methoxyphenyl)-methanone

131-55-5

2,2',4,4'-tetrahydroxybenzophenone

Conditions
ConditionsYield
With urea; AlCl3
3555-85-9

2,2',4,4'-tetramethoxybenzophenone

95-50-1

1,2-dichloro-benzene

131-55-5

2,2',4,4'-tetrahydroxybenzophenone

Conditions
ConditionsYield
AlCl3 In water
108-46-3

recorcinol

131-55-5

2,2',4,4'-tetrahydroxybenzophenone

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1.1: chloroform / 4 h / 20 - 65 °C / Large scale
1.2: Large scale
2.1: aluminum (III) chloride / N,N-dimethyl-formamide; cis-1,2-Dichloroethylene / 30 - 85 °C / Large scale
3.1: hydrogenchloride / water / 6 h / 20 - 100 °C / Autoclave; Large scale
View Scheme
131-55-5

2,2',4,4'-tetrahydroxybenzophenone

1214-24-0

3,6-dihydroxy-xanthen-9-one

Conditions
ConditionsYield
In water at 220℃; under 1900 Torr;100%
In water at 190℃; for 48h;100%
In water at 200℃; for 6h; Sealed tube;100%
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    Product Description Other name: 2,2',4,4'-Tetrahydroxybenzophenone; Bis(2,4-dihydroxyphenyl)methanone; 2,2',4,4'-Tetrahydroxy Benzophenone; bis(2,4-dihydroxyphenyl)methanone CAS Number: 131-55-5 Molecular Formul

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    Product Name: 2,2',4,4'-Tetrahydroxybenzophenone CAS: 131-55-5 MF: C13H10O5 MW: 246.22 EINECS: 205-028-9 Mol File: 131-55-5.mol 2,2',4,4'-Tetrahydroxybenzophenone Structure 2,2',4,4'-Tetrahydroxybenzophenon

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    Product name: 2,2’,4,4’-Tetrahydroxy Benzophenone CAS No.:131-55-5 Molecule Formula:C13H10O5 Molecule Weight:246.21 Purity: 99% Package: 25kg/bag Description:Light yellow crystalline powder Manufacture Standards:Enterprise Standard

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Chemistry

Molecular structure of Benzophenone-2 (CAS NO.131-55-5) is:

Product Name: Benzophenone-2
CAS Registry Number: 131-55-5
IUPAC Name: bis(2,4-dihydroxyphenyl)methanone
Molecular Weight: 246.2155 [g/mol]
Molecular Formula: C13H10O5
XLogP3-AA: 2.4
H-Bond Donor: 4
H-Bond Acceptor: 5 
EINECS: 205-028-9
Melting Point: 198-200 °C(lit.)
Surface Tension: 83.1 dyne/cm
Density: 1.526 g/cm3
Flash Point: 289.2 °C
Enthalpy of Vaporization: 83.7 kJ/mol
Boiling Point: 531.2 °C at 760 mmHg
Vapour Pressure: 6.69E-12 mmHg at 25°C
Product Categories: Industrial/Fine Chemicals;Aromatic Benzophenones & Derivatives (substituted);Benzophenones (for High-Performance Polymer Research);Functional Materials;Reagent for High-Performance Polymer Research;C13 to C14;Carbonyl Compounds;Ketones

Uses

 Benzophenone-2 (CAS NO.131-55-5) is used for pharmaceutical intermediates, photographic materials, cosmetics anti-uv additive, etc.

Toxicity Data With Reference

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
rat LD50 oral 1220mg/kg (1220mg/kg)   Journal of the American College of Toxicology. Vol. 2(5), Pg. 35, 1983.

Safety Profile

Hazard Codes: HarmfulXn,Xi
Risk Statements: 22-36/37/38 
R22:Harmful if swallowed. 
R36/37/38:Irritating to eyes, respiratory system and skin.
Safety Statements: 26-36-37/39 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S36:Wear suitable protective clothing. 
S37/39:Wear suitable gloves and eye/face protection.
WGK Germany: 3
RTECS: DJ1892000

Specification

 Benzophenone-2 , its cas register number is 131-55-5. It also can be called 2,2',4,4'-Tetrahydroxybenzophenone ; Di(2,4-dihydroxyphenyl)methanone ; Bis(2,4-dihydroxyphenyl)methanone ; Benzophenone, 2,2',4,4'-tetrahydroxy- ; Methanone, bis(2,4-dihydroxyphenyl)- .It is a yellow to brown crystalline powder.

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