Chinese name: sodium
English name: sodium
Water soluble: soluble
monoclinic crystal or powder
chemical formula Na2SO3, common sulfite, white, monoclinic crystal or powder.
It has a stimulating effect on eyes, skin and mucous membranes and can pollute
water sources. Decomposed by high heat to produce toxic sulfide fumes. Industrially
used mainly for the production of cellulose sulfite, sodium thiosulfate,
organic chemicals, bleaching fabrics, etc., also used as reducing agents,
preservatives, dechlorination agents.
Function and use
microanalytical determination of ruthenium and osmium and the preparation of
developer, also used as a reducing agent;
Used for man-made
fiber stabilizers, fabric bleaches, photographic developers, dyeing and
bleaching deoxidizers, perfumes and dye reducing agents, papermaking lignin removers,
Used as a common
analytical reagent and photoresistor material;
agent, which has a bleaching effect on foods and a strong inhibitory effect on
oxidases in plant foods. Our regulations can be used for candied fruit. The
large amount is 2.0g/kg; it can also be used for glucose, liquid glucose, sugar,
rock sugar, sugar, candy, bamboo shoots, mushroom and mushroom canned, grape,
blackcurrant concentrated juice. 0.60 g/kg. Residues of bamboo shoots,
mushrooms and canned mushrooms, preserves, grapes and blackcurrant concentrate
(in terms of SO2) ≤ 0.05g / kg; potato starch residues ≤ 0.03g
/ kg; residues of biscuits, sugar, fans and other varieties The amount is less
than 0.1g/kg; the residual amount of liquid glucose should not exceed 0.2g/kg;
As a deoxidizer and
bleaching agent, the printing and dyeing industry is used for the scouring of
various cotton fabrics, which can prevent the local oxidation of cotton fibers,
affect the fiber strength, and improve the whiteness of the scouring materials.
The photographic industry is used as a developer, the paper industry. Used as a
lignin remover, as a stabilizer for man-made fibers in the textile industry, as
a photoresistor in the electronics industry, and as a treatment for
electroplating wastewater and drinking water in the water treatment industry;
The food industry
is used as a bleaching agent, preservative, bulking agent, and antioxidant.
Also used in pharmaceutical synthesis, as a reducing agent when producing
Used for making
cellulose sulfite, sodium thiosulfate, organic chemicals, bleaching fabrics,
etc., also used as reducing agent, preservative, dechlorination agent, etc.
The laboratory is
used to prepare sulfur dioxide.
storage and transportation: The packaging should be complete at the time of
shipment and the loading should be secure. Ensure that there is no leakage, no
collapse, no fall, no damage during transportation.
It is strictly
forbidden to mix and store with acid, food chemicals, etc.
Transportation and storage
should be protected from exposure, rain and high temperature.