sodium bisulfite

The chemical, which is extremely hazardous, has been replaced by sodium bisulfite.

Sodium bisulfite is a common reducing agent in the chemical industries.

It can be obtained from sodium bisulfite by the following reaction:

Sodium bisulfite is also the key ingredient in the Bucherer reaction.

Sodium bisulfite is a food additive with E number E222.

In organic chemistry sodium bisulfite has several uses.

This can be accomplished via dechlorination towers with acid and sodium bisulfite addition.

The enamine eliminates sodium bisulfite with formation of naphthylamine 6.

CS contamination can be removed by washing with an alkaline solution of water and 5% sodium bisulfite.

The first step in this reaction is an addition reaction of sodium bisulfite to an aromatic double bond.

In presence of oxygen, it decomposes to sodium bisulfate and sodium bisulfite.

In the case of wine making, sodium bisulfite releases sulfur dioxide gas when added to water or products containing water.

No sewage is pumped into the ocean, although a chlorine and sodium bisulfite sanitizing treatment was used to accomplish this in the past.

Moreover, the sodium bisulfite in commercially available preparations of physostigmine may cause life-threatening allergic responses.

The garments are then transferred to other machines, were an "antichlor," sodium bisulfite, is applied to remove any remaining bleach.

On addition of sodium bisulfite the copper sulfate solution turns from blue to green, at which point the sodium cyanide is added.

In fruit canning, sodium bisulfite is used to prevent browning (caused by oxidation) and to kill microbes.

Sodium bisulfate and sodium bisulfite decrease the pH and therefore accelerate the reaction.

Low-odor stop baths use citric acid or sodium bisulfite in place of acetic acid.

The other main use of sodium bisulfite is as a mild reducing agent in organic synthesis in particular in purification procedures.

Sodium bisulfite should not be confused with sodium bisulfate which is used as a pH lowering chemical for swimming pools.

Genomic DNA of interest is treated with sodium bisulfite, which introduces methylation-dependent sequence differences.

For example, sodium bisulfite is NaHSO.

Sodium bisulfite is used in the analysis of methylation status of cytosines in DNA.

Sodium metabisulfite can be prepared by evaporating a solution of sodium bisulfite saturated with sulfur dioxide: