Sodium hydrosulfite slurries

Details Sodium hydrosulfite slurries Sodium hydrosulfite slurries

1984-03-08

1985-08-13

Straub, Gary P.

Chemistry of inorganic compounds

Sulfur or compound thereof

Oxygen containing

423265, 25218823, 8110, C01B 1766, D06L 310

Patent

active

045349541

ABSTRACT:
Aqueous sodium dithionite slurries, which are non-settling during shipment thereof and are thereafter pumpable, and a method for their manufacture are provided. The slurries contain at least 25% by weight of crystalline pure sodium dithionite and at least about 0.13% by weight of a xanthan gum. As textile bleaching compositions, the slurries comprise, on a weight basis, at least about 36% of commercial sodium dithionite, at least about 3% of sodium hydroxide, at least about 0.25% of a chelate, and at least about 0.25% of a xanthan gum. As woodpulp bleaching compositions, the slurries comprise, on a weight basis, about 28% of commercial sodium dithionite, at least about 2% of sodium carbonate, at least about 2% of sodium tripolyphosphate, and at least about 0.13% of a xanthan gum.

REFERENCES:
patent: 3839217 (1974-10-01), Owen et al.
patent: 3939210 (1974-10-01), Owen et al.
patent: 3960649 (1976-06-01), Sullivan
patent: 3985674 (1976-10-01), Ellis et al.
patent: 4218327 (1980-08-01), Wellington
patent: 4283303 (1981-08-01), Ellis
patent: 4357256 (1982-11-01), Yamasuchi

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