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Sodium Sulfite

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  • Price:

    Negotiable

  • minimum:

  • Total supply:

  • Delivery term:

    The date of payment from buyers deliver within days

  • seat:

    Liaoning

  • Validity to:

    Long-term effective

  • Last update:

    2018-08-29 22:29

  • Browse the number:

    97

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Dalian Sky Chemical Co.,Ltd
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Contact:

dlshengkun(Mr.)  

Email:

Telephone:

Phone:

Area:

Liaoning

Address:

Room 102, Unit 3, Building 17, Puya Ziyu Road, Ganjingzi District, Dalian City, Liaoning Province, China

Website: http://www.dlskychem.com/ http://dlshengkun.lvxiangruaa.com/
Product details




























Melting point


500 °C


Density


2.63


Refractive index


1,484


Storage conditions


Store at RT.


Solubility


H2O: 1 M at 20 °C, clear, colorless


form


Solid


colour


White to slightly yellow


PH value


9.0-10.5 (25℃, 1M in H2O)


Water solubility


23 g/100 mL (20 ºC)


Sensitivity


Hygroscopic


Merck


14,8682


stability


Stable. Incompatible with strong acids. Moisture and air sensitive.


CAS database


7757-83-7(CAS DataBase Reference)





Synonyms: Sodium sulfite anhydrous; SODIUM SULFITE, EXSICCATED; SODIUM SULPHITE; anhydroussodiumsulfite; disodiumsulfite; exsiccatedsodiumsulfite; natriisulphis; natriumsulfid






Overview Sodium sulfite (English Sodium formula: Na2SO3) is an inorganic compound. It is a white granule powder at room temperature with a sulphur dioxide odor, stable on drying and sensitive to moisture. Soluble in water and glycerin, insoluble in ethanol, aqueous solution is alkaline, its aqueous solution is alkaline to litmus paper and phenolphthalein, and produces toxic sulfur dioxide gas with acid. The pH of 1% aqueous solution is 8.3~9.4, strong reduction Sex. It decomposes into sodium sulfide and sodium sulfate when heated, and gradually oxidizes to sodium sulfate when placed in air. In nature, there are three forms of anhydrous sodium sulfite, sodium sulfite and sodium sulfite, among which anhydrous sodium sulfite is the least susceptible to oxidation. Sodium sulfite can be obtained by passing sulfur dioxide into a sodium hydroxide solution, and when the sulfur dioxide is excessive, sodium hydrogen sulfite is formed. Alternatively, sulfur dioxide gas is introduced into the sodium carbonate solution, and after saturation, a sodium carbonate solution is added, and crystallized to obtain a hemihydrate crystal, which is heated and dehydrated to obtain an anhydride.



Sodium sulfite can be used as a developer, preparation of cellulose sulfite, preparation of sodium thiosulfate, preservatives for dried fruits and meats, deoxidizers in the printing and dyeing industry, and as a reducing chemical agent for chemical and laboratory applications. Production and synthesis.




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