DECIMAL CLASSIFICATION 
546.9 
91 
.92 
93 
94 
95 
96 
97 
.98 
00 
547 
© a 
ey 
21 
22 
23 
24 
25 
26 
27 
28 
20) 
Nf 
IN 
A 
0 
oA 
F 
- 
- 
{ 
- 
” 
{ 
n 
| 
0 
Platinum group 
Gold 
Platinum 
Iridium 
Osmium 
Ruthenium group 
Ruthenium 
Rhodium 
Palladium 
False and putativ elements 
Arrange alfabeticly 
Organic chemistry 
Cyanogen and its compounds 
Hydrocarbons Fatty series 
For occurrence as minerals see 549.8 
Paraffins 
Olefins 
Acetylenes 
Valylene Dipropargyl, etc. 
Aromatic series 
Benzenes 
Diphenyl group 
Naphthalene Anthracene Phenanthrene 
Higher series 
Alcohols Phenols 
Ethers: simple, compound; haloid 
Aldehydes 
Ketones Quinones 
Acids: acid halids, acid anhydrids, sulfo-acids 
Nitroderivates: amins, compound ammoniums, amids, 
amic acids, azo-bodies, azoxy-bodies, hydrazo-bodies. 
diazo-bodies 
Compounds with metals