Limited is one of the leading manufacturers of Pure Sodium Hydrosulphite
(popularly known as Hydros) in India. We adopt a unique process for
the manufacture of Sodium Hydrosulphite, known as 'Sodium Formate Process',
as against the conventional method of Zinc or Amalgam Process. The advantage
of Sodium Formate Process is that the end product does not contain even
traces of Zinc Iron or Mercury. TCP has collaboration with M/s Mitsubishi
Corporation of Japan, who have supplied both the imported equipment
and the process know how for the plant. This is the only plant in India
and among the five in the world, using this unique. 'Sodium Formate
Sodium Hydrosulphite conforms to ISI Standard in purity - 84-88%. TCP
also manufacture Sodium Hydrosulphite of higher purity. Quality system
of TCP's process is as per ISO 9002.
Reducing Agent, Dyeing Auxiliary in Vat Dyeing, in 'Reduction Clearing'
of Disperse Dyes and in the 'Stripping' of direct colour and as a reduction
Bleaching Agent for wool, nylon and cotton.
purification as a Bleaching Agent in the removal of organic and other
impurities, thereby imparting attractive colour and sweetness to the
end product. Jaggery produced by hydros will not become black and will
not become semi solid on long storage.
used in reducing reaction and as a Bleaching Agent in the Manufacture
of certain Antibiotics and Analgesics.
as a Bleaching Agent in Paper and Pulp Industry, for bleaching of mechanised
pulps, single stage or for split bleaching.
bleaching of clay removes of iron impurities and allows clay to be bleached
to perfect whiteness. Sodium Hydrosulphite transforms trivalent iron
to bivalent which, on subsequent acid treatment, dissolves and removes
iron from the clay.
Vat Dyes: Hydrosulphite
is used in the manufacture of Vat Dyes.
is used in the bleaching of Crude Soap, particularly, in the manufacture
of Washing Soaps.
Tanning of Leather: Used
as a 'Reducing agent' in the preparation of Chrome Tanned Leather'.
It is also used as a 'Bleaching Agent' in the manufacture of 'Vegetable
OF IMPORTANT INDUSTRIAL SECTORS
II. LIQUID SULPHUR DI-OXIDE
Liquid Sulphur Dioxide is used in (Refineries for Kerosene Refining.)
Lab Chemicals manufacturing, Paper bleaching, Rayon pulp Bleaching.
Leather chemical manufacturing etc. It is being supplied in cylinder tonners.
SODIUM FORMALDEHYDE SULPHOXYLATE - PRODUCT DATA - TANGOLITE
Sodium Formaldehyde Sulphoxylate
as NaHSO2, CH2O, 2H2O-97% to 102%
lumps - chips
Formaldehyde Bisulphite - 4.0% max.
(NaHSO3, CH2O, H2O)
NaHSO2, CH2O, 2H2O
Sulphite (Na2SO3)-3.0% max.
pH of 1% Soln - 9.0 to 10.0