stannate

= -- After the treatment with stannate of soda and sulphuric acid the prepared cotton is ready for dyeing.

The Dyeing of Cotton Fabrics A Practical Handbook for the Dyer and Student Franklin Beech

The tin contained in the stannate is deposited on the cotton in the form of stannic oxide, or, more strictly, stannic acid.

The Dyeing of Cotton Fabrics A Practical Handbook for the Dyer and Student Franklin Beech

In dyeing with this class of colours stannate of soda, acetate of lead or alum may be used as mordants.

The Dyeing of Cotton Fabrics A Practical Handbook for the Dyer and Student Franklin Beech

After this treatment the cotton is ready for dyeing with any kind of acid, azo and even eosine dyes, and this is done in the same manner as is used in dyeing the eosines on a stannate mordant.

The Dyeing of Cotton Fabrics A Practical Handbook for the Dyer and Student Franklin Beech

Further, owing to the decomposition of the stannate by exposure to the air, it is important that the substance should be used while fresh, and that only fresh baths should be used.

The Dyeing of Cotton Fabrics A Practical Handbook for the Dyer and Student Franklin Beech

The method adopted for the production of eosine pinks and scarlets on cotton involves three operations: (1) impregnating the cloth with sodium stannate; (2) fixing oxide of tin by a bath of weak sulphuric acid; and

The Dyeing of Cotton Fabrics A Practical Handbook for the Dyer and Student Franklin Beech

The precipitate is then washed and dried, whereupon it takes a green colour tinged with blue, but without the brightness or durability of the preceding stannate.

Field's Chromatography or Treatise on Colours and Pigments as Used by Artists George Field

The following is, the usual method of treatment, except with goods intended for very light shades: Pass the goods through a strong decoction of sumac or other tannin solution for an hour, and afterwards for an hour or two through a weak solution of stannate of soda; wring out, dip into a dilute solution of sulphuric acid, and rinse well in water.

Scientific American, Volume XXXVI., No. 8, February 24, 1877 A Weekly Journal of Practical Information, Art, Science, Mechanics, Chemistry, and Manufactures. Various

However that may be, in these days both names signify cobalt compounds, coeruleum being a stannate of cobalt, and cyanine a mixture of cobalt and Prussian blue.

Field's Chromatography or Treatise on Colours and Pigments as Used by Artists George Field

The stannate of soda is employed in the same manner as when the eosines are used, and, therefore, does not require to be further dealt with.

The Dyeing of Cotton Fabrics A Practical Handbook for the Dyer and Student Franklin Beech