亚硫酸钠

Sodium sulfite is used in the photography industry to protect developing solutions from oxidation; in the pulp and paper industry; in water treatment as an oxygen scavenger agent, as a desulfurizing and dechlorinating agent in the leather industry and as a bleaching agent in the textile industry. It is used as a preservative to prevent dried fruit from discoloring. It finds application as a sulfonation and sulfomethylation agent in the chemical industry. It is involved in the production of sodium thiosulfate. Other applications include forth flotation ores, oil recovery and manufacture of dyes.

Hygroscopic. Moisture and air sensitive. Keep the container tightly closed in a dry and well-ventilated place. Incompatible with acids and strong oxidizing agents.

MFCD00003503

231-821-4

Na₂SO₃

126.04

>500° dec.

2.633

Moisture Sensitive. Air Sensitive. Store under Nitrogen. Ambient temperatures.

Granular

Soluble in water and glycerol. Insoluble in alcohol, liquid chlorine and liquid ammonia.

14,8682

31
Contact with acids liberates toxic gas.

Maximum level of impurities: Insoluble matter 0.005%, Free acid P.T., Titratable free base 0.03meq/g, Cl 0.02%, Heavy Metals (as Pb) 0.001%, Fe 0.001%

60
This material and its container must be disposed of as hazardous waste

WE2150000

是

H303
May be harmful if swallowed.