Uses of Formaldehyde
(i) The 40% solution of formaldehyde (formalin) is used as germicide, disinfectant and antiseptic. It is needed for the preservation of biological specimens.
(ii) It is used in the manufacturing of hexamethylene tetramine (urotropine) which is used as an antiseptic and germicide.
(iii) It is needed in silvering of mirror.
(iv) It is employed in creation of synthetic dyes such as para-rosaniline, indigo, etc.
(v) It is used in the preparation of formamint (by mixing formaldehyde with lactose) - a throat lozenges.
(vi) It is used for creating synthetic plastics like bakelite, urea-formaldehyde resin, etc.
(vii) Rongalite - a product found by reducing formaldehyde sodium bisulphite derivative with zinc dust and ammonia and is used as a reducing agent in vat dyeing.
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