See also:

• RETENE (methyl isopropyl phenanthrene), C18H

RETENE (methyl isopropyl phenanthrene), C18H  ,8, a hydro-See also:

• CARBON (symbol C, atomic weight 12)

carbon See also:

• PRESENT

present in the See also:

• COAL

coal-See also:

• TAR

tar fraction, boiling above 36o° C.; it also occurs in the tars obtained by the See also:

• DISTILLATION (from the Lat. distillare, more correctly destillare, to drop or trickle down)

distillation of resinous See also:

• WOODS, LEONARD (1774-1854)
• WOODS, SIR ALBERT (1816-1904)

woods . It crystallizes in large plates, which melt at 98.5° C. and See also:

• BOIL

boil at 390° C . It is readily soluble in warm See also:

• ETHER, (C2H5)2O

ether and in hot glacial acetic See also:

• ACID (from the Lat. root ac-, sharp; acere, to be sour)

acid . See also:

• SODIUM [symbol Na, from Lat. natrium; atomic weight 23.00 (0=16)]

Sodium and boiling amyl See also:

• ALCOHOL

alcohol reduce it to a tetrahydroretene, whilst if it be heated with See also:

• PHOSPHORUS (Gr. 4ws, light, sPEpety, to bear)

phosphorus and hydriodic acid to 26o° C. a dodecahydride is formed . Chromic acid oxidizes it to See also:

• RETENE (methyl isopropyl phenanthrene), C18H

retene quinone, See also:

• PHTHALIC

phthalic acid and acetic acid . It forms a picrate which melts at 123–124° C .