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Name	2,2',4,4'-Tetrahydroxybenzophenone	EINECS	205-028-9
CAS No.	131-55-5	Density	1.526 g/cm³
PSA	97.99000	LogP	1.74000
Solubility	Slightly soluble in water.	Melting Point	198-200 °C(lit.)
Formula	C₁₃H₁₀O₅	Boiling Point	531.2 °C at 760 mmHg
Molecular Weight	246.219	Flash Point	289.2 °C
Transport Information	N/A	Appearance	yellow to brown crystalline powder
Safety	26-36-37/39	Risk Codes	22-36/37/38
Molecular Structure		Hazard Symbols	Xn,Xi
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);	Article Data	26

2,2',4,4'-Tetrahydroxybenzophenone Synthetic route

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

: 131-55-5
2,2',4,4'-tetrahydroxybenzophenone

Conditions

Conditions	Yield
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

Conditions	Yield
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

Conditions	Yield
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

Conditions	Yield
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

Conditions	Yield
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

Conditions	Yield
AlCl3

: 131-54-4
bis(2-hydroxy-4-methoxyphenyl)-methanone

: 131-55-5
2,2',4,4'-tetrahydroxybenzophenone

Conditions

Conditions	Yield
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

Conditions	Yield
AlCl3 In water

: 108-46-3
recorcinol

: 131-55-5
2,2',4,4'-tetrahydroxybenzophenone

Conditions

Conditions	Yield
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

Conditions	Yield
In water at 220℃; under 1900 Torr;	100%
In water at 190℃; for 48h;	100%
In water at 200℃; for 6h; Sealed tube;	100%

2,2',4,4'-Tetrahydroxybenzophenone Chemical Properties

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

2,2',4,4'-Tetrahydroxybenzophenone Uses

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

2,2',4,4'-Tetrahydroxybenzophenone 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.

2,2',4,4'-Tetrahydroxybenzophenone Safety Profile

Hazard Codes: Harmful Xn,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

2,2',4,4'-Tetrahydroxybenzophenone 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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