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Physodalic acid

B Physodalic acid radiating masses of fine needles... [Pg.50]

A number of depsidones in the meta series are aldehydes fumarprotoce-traric acid, stictic acid, norstictic acid (72), constictic acid, (73),pannarin, physodalic acid, protocetraric acid, psoromic acid, salazinic acid, and virensic acid. They react with / -phenylenediamine to give yellow to red condensation products (P+ substances). [Pg.510]

PD+,K+ Depsides alectorialic acid, atranorin, baeomycesic acid, barbatolic acid, chloroatranorin, decarboxythamnolic acid, haemathamno-lic acid, nephroarctin, thamnolic acid, Depsidones constictic acid, fumarprotocetraric acid, norstictic acid, physodalic acid, proto-cetraric acid, salazinic acid, stictic acid, virensic acid... [Pg.634]

Many /5-orcinol depsidones discolor and decompose slowly without melting at temperatures above 240°-250° C, the decomposition being dependent upon the heating rate. For physodalic acid a decomposition range of 230°-260° C has been given, for salazinic acid 260°-280° C, and for fumarpro-tocetraric acid 245°-260°C. Presence of the solvent of crystallization may alter the mp drastically. Alectoronic acid (from benzene) melts at 193° C,... [Pg.648]

See other pages where Physodalic acid is mentioned: [Pg.222]    [Pg.500]    [Pg.503]    [Pg.942]    [Pg.1272]    [Pg.5]    [Pg.40]    [Pg.50]    [Pg.83]    [Pg.84]    [Pg.119]    [Pg.319]    [Pg.346]    [Pg.11]    [Pg.18]    [Pg.128]    [Pg.130]    [Pg.156]    [Pg.159]    [Pg.160]    [Pg.558]    [Pg.228]    [Pg.229]   
See also in sourсe #XX -- [ Pg.346 ]

See also in sourсe #XX -- [ Pg.510 ]

See also in sourсe #XX -- [ Pg.228 , Pg.229 ]



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