2. Perfumes These solutions have pleasent odour and invariably consist of three ingredients: a vehicle( ethanol + H20), fixative e. g., sandalwood oil, benzoin, glyceryl diacetate etc.) and odour producing substance( e. g., terpenoids like linalool, anisaldehyde( p-methoxy-benzaldehyde etc.)
3. Talcum Powder It is used to reduce irritation of skin. Talc( Mg3( OH) 2Si4O10), chalk, Zno, zinc sterate and a suitable perfume are the constituents of talcum powder.
4. Deodorants These are applied to mask the body odour. These possess antibacterial properties. Aluminium salts, ZnO, Zn02,( C17H35COO) 2Zn can be used in deodorant preparation.
Rocket Propellants Substances used for launching rockets are called rocket propellants. These are the combination of an oxidiser and a fuel.
Depending upon the physical states of oxidiser and fuels, rocket propellants are classified as
Solid Propellants These are further divided into two classes
( i) Composite propellants In these propellants, fuel is polymeric binder such as polyurethane or polybutadiene and oxidiser is ammonium per chlorate or potassium perchlorate.