519-34-6

Basic information

• Product Name: 2,3',4,4',6-Pentahydroxybenzophenone
• Synonyms: natural yellow 11;MACLURIN;2,4,6,3',4'-PENTAHYDROXY BENZOPHENONE;2,3',4,4',6-PENTAHYDROXYBENZOPHENONE;MACLURIN(P);morintannic acid;Maclurine;(3,4-Dihydroxyphenyl)(2,4,6-trihydroxyphenyl)methanone
• CAS NO: 519-34-6
• Molecular Formula: C₁₃H₁₀O₆
• Molecular Weight: 262.21
• EINECS: 208-268-2
• Product Categories: Colours, Dyes, Indicators & Pigments
• Mol File: 519-34-6.mol
• Article Data: 2

Chemical Properties

• Melting Point: 222°C
• Boiling Point: 325.46°C (rough estimate)
• Flash Point: 301.2 °C
• Appearance: /
• Density: 1.2831 (rough estimate)
• Refractive Index: 1.4580 (estimate)
• Storage Temp.: 2-8°C
• PKA: 6.75±0.40(Predicted)
• Water Solubility: 5g/L(14 oC)
• CAS DataBase Reference: 2,3',4,4',6-Pentahydroxybenzophenone(CAS DataBase Reference)
• NIST Chemistry Reference: 2,3',4,4',6-Pentahydroxybenzophenone(519-34-6)
• EPA Substance Registry System: 2,3',4,4',6-Pentahydroxybenzophenone(519-34-6)

Safety Data

• Hazardous Substances Data: 519-34-6(Hazardous Substances Data)

Usage

Uses

Different sources of media describe the Uses of 519-34-6 differently. You can refer to the following data:
1. Dyeing fabrics.
2. 2,3'',4,4'',6-Pentahydroxybenzophenone is a UV absorber.

Preparation

Preparation by reaction of 3,4-dihydroxybenzonitrile with phloroglucinol in the presence of zinc chloride and hydrochloric acid in ethyl ether (Hoesch reaction), first at r.t. for 1 h, then at 50–60° for 4 h (37%).

Upstream product

• 108-73-6 3,5-dihydroxyphenol 
• 17345-61-8 3,4-dihydroxybenzonitrile 
• 58262-60-5 2,3',4,4',6-pentamethoxybenzophenone 
• 59092-97-6 1,3,7-trihydroxy-6-methoxyxanthone 
• 3542-72-1 norathyriol 
• 10135-18-9 diethyl 2,4,6-trihydroxyisophthalate 
• 480-20-6 Aromadendrin 

Downstream Products

• 108-73-6 3,5-dihydroxyphenol 
• 99-50-3 3,4-Dihydroxybenzoic acid 
• 124-38-9 carbon dioxide 
• 120-80-9 benzene-1,2-diol 
• 4773-96-0 mangiferin 
• 92631-83-9 3-glucosyl-2,3′,4,4′,6-pentahydroxybenzophenone 
• 1620631-23-3 [methylenebis(2,4,6-trihydroxy-3,1-phenylene)]bis[(3,4-dihydroxyphenyl)methanone] 
• 3542-72-1 norathyriol 

Relevant articles and documents

Method for dyeing keratinous fibres using a monohydroxyindole or dihydroxyindole and a non-oxidizing aromatic carbonyl derivative and dyeing agent

The present invention relates to a method for dyeing keratinous fibers, characterized in that the following are applied to the fibers: a) a composition (A) containing, in a medium appropriate for dyeing, at least one monohydroxyindole or dihydroxyindole, this application being preceded or followed by the application of b) a composition (B) containing, in a medium appropriate for dyeing, at least one aromatic carbonyl derivative chosen from hydroxyacetophenones, hydroxybenzophenones, 2-hydroxy-1,4-benzoquinones, hydroxy-1,4-naphthoquinones,amino-1,4-naphthoquinones,hydroxy-9,10-anthraquinones and amino-9,10-anthraquinones. It also relates to the dyeing agents for carrying it out.