51 
_ Tike pitch. It does not burn well, and melts together with paraffin, 
wax, and solid fats. It dissolves i in hot lucea oil, to which it imparts 
its brown colour. It is soluble in aleohol, bee chloroform, oil of 
eucalypt, but mot in benzol. H 80, dissolves some of it with decom- 
position and grey colouration. 
The solution in alcohol is reddish-brown. It isaltered to serele 
a by ferric ere, and then to pink on addition of ammonia. 
OH and NaOH stain the alcoholic salatiog first brown and et 
. Bee, which colour on addition of HCl is changed into 
red-brown d yello ow. Ammonia gives cls brown siantians: The 
solution in ‘oll of eucalypt gets violet with KOH, that in lucca oil gets 
yellow with KOH and violet only on addition of alcohol. If heated 
over 200, the e boiling resin is chap iar over without dpcompnetsi 
as the sublimate gives the same reactions as the resin. On stro onger 
heating the products of dry distillation are obtained, and between 
them can be recognised catechol and phen 
The alcoholic solution gives a precipitate with sugar of lead, 
Which on org elas by H,S yields a brown resin, to be called 
Alpha-Grevillia 
ANaLysis— 
Resin n not precipitated in the piekois solution by oa of aah 79°0 
; Resin precipitated by sugar o es 
! 100°0 0 
: The Grevillea resin can be used as a substitute for pitch 
so and even technically where toughness and stickiness is not 
: or, 
has analysed the resin (1889). Cold water has no effect . 
In aleoho elts in boiling water and dissolves entirely (my empie) 
- Yellow l, ether, and chloroform to a brown iquid, becoming mo 
: "Glee it alge lution. Benzol and the volatile oils (oil of rales 
: rae solntion i In alcohol is stained greyish green by ferric a 
g By B KO colour is turned back into brown b addition of ammon 
a Ss ~ € brown colour of the siéoholie solution is changed into 
Rie dissolves d this 
tlutic, the Myoporum resin (yellow-brown), an 
. a dissolves well in idoohar No eer reactions with acids or 
E oporum can in all proportions be easily melted 
sce eee ms, pa, oils, and sctid: fats The mixtures are 
be Lucea oil is coloured ee E red-brown by gs 
mi if dy parts of each are taken a good soft ointment is 
= * The solution in oil of eucalypt is dark-grey. 
fame, ao melts under 100° C., and burns with a smoking 
*8 neanly Part of the resin can at 300° C. be sublimated _ 
slog the curless resinous drops soluble in all the reagents which 
Wickly a) 788 of Myoporum. Especially chloroform takes it up 
oo and leaves it as concentric rings on evaporation, If heated 
