应用
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.

Grade Specifications
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%

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

基本信息

MDL
MFCD00003503

EINECS
231-821-4

分子式
Na₂SO₃

分子量
126.04

熔点
>500° dec.

密度
2.633

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

形态
Granular

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

Merck
14,8682

GHS危害和防范说明

Hazard Statements
H303
May be harmful if swallowed.

安全信息

危险类别
31
Contact with acids liberates toxic gas.

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

RTECS
WE2150000

TSCA
是