2,4-dihydroxybenzophenone

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Structural formula
Structural formula of 2,4-dihydroxybenzophenone
General
Surname 2,4-dihydroxybenzophenone
other names

Benzoresorcinol

Molecular formula C 13 H 10 O 3
Brief description

colorless to yellowish solid

External identifiers / databases
CAS number 131-56-6
EC number 205-029-4
ECHA InfoCard 100.004.574
PubChem 8572
ChemSpider 8254
Wikidata Q209209
properties
Molar mass 214.22 g mol −1
Physical state

firmly

density

1.32 g cm −3

Melting point

143-146 ° C

boiling point

194 ° C

solubility
safety instructions
GHS labeling of hazardous substances
07 - Warning 08 - Dangerous to health 09 - Dangerous for the environment

Caution

H and P phrases H: 319-361-411
P: 305 + 351 + 338-308 + 313-280-261
Toxicological data

8600 mg kg −1 ( LD 50 ,  rat ,  oral )

As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

2,4-Dihydroxybenzophenone (also benzoresorcinol ) is an organic compound . It belongs to the compound classes of the ketones or phenols .

properties

2,4-Dihydroxybenzophenone is a colorless to yellowish, finely crystalline powder. 2,4-Dihydroxybenzophenone has a flash point of 125 ° C.

Manufacturing

The synthesis takes place in an aqueous solution of benzotrichloride and resorcinol in the presence of an emulsifier .

Synthesis of 2,4-dihydroxybenzophenone

use

2,4-dihydroxybenzophenone is used for fluorimetric boron - analytics as well as absorber for ultraviolet light in plastics used.

safety instructions

The compound causes irritation on contact with eyes and skin . The lethal dose LD 50 for rats after oral ingestion is over 5 g / kg body weight.

Individual evidence

  1. ↑ a b c d Entry on 2,4-dihydroxybenzophenone. In: Römpp Online . Georg Thieme Verlag, accessed on September 29, 2014.
  2. ↑ a b c Data Sheet 2,4-dihydroxybenzophenone (PDF) at Merck , accessed March 9, 2010 .
  3. ↑ a b Entry on 2,4-dihydroxybenzophenone in the GESTIS substance database of the IFA , accessed on July 23, 2016(JavaScript required) .
  4. ↑ Data sheet 2,4-dihydroxybenzophenone from AlfaAesar, accessed on March 9, 2010 ( PDF )(JavaScript required) .
  5. ↑ US Patent 4990680