Liquid hydrogen, liquid ammonia, Hydrazine, nitro methane, methyl nitrate,
Polybutadiene, acrylic acid, nitro-glycerine + nitrocellulose
N2O4 + Acrylic rubber.
Types of Colloidal Systems
Some coloured glasses
Cheese, butter, jellies
Milk, Hair Cream
Pumice stone, foam rubber
Froth, whipped cream
Less important as the colours are not fast
Azo (-N=N-) group is chromosphere.
Mautius yellow, Naphtha yellow, Congo red etc.
The quality of possessing colour is particularly noticeable in compounds containing well defined chemically unsaturated groupings. These groups are known as chromospheres. Auxochromes are chemical radicals having the property of anchoring the desired dye effectively.
Copper (80%) & Zinc (20%)
Copper (90%) & Tin (1%)
Copper (60%), Zinc (20%) & Nickel (20%)
Aluminium & Copper
Aluminium, Nickel, Cobalt & Iron
Aluminium (95%) & Magnesium (5%)
Tin, Antimony, Copper & Lead. Used in ball bearings to reduce friction.
Iron & Nickel. Used in precision instruments
Copper & tin.
Copper, Tin & Zinc
Nickel (67%), Copper & Iron.
Tin (80-90%), Copper & Lead
Tin, Lead & Antimony.