Ammonium Sulfite

Exposure to air for a long time is susceptible to oxidation to ammonium sulfite. Has a strong reduction. The solution was light to light brown with sulfur dioxide odor. Relative density of cs096 solution) 1.3. It can interact with acid and alkali. In the air is easy to be oxidized, heat de

Nature
Pure ammonium sulfite is a white or light yellow rhomboid crystal. Relative density 2. 03C, 150 sublimation. Slightly sulfur dioxide. It is easy to absorb moisture in the air. Very soluble in water, lOOmL 10 deg C water dissolved 2679,60 deg C dissolved 6209. Soluble in ethanol. In case of acid and heat uniform decomposition and release of sulfur dioxide. Exposure to air for a long time is susceptible to oxidation to ammonium sulfite. Has a strong reduction. The solution was light to light brown with sulfur dioxide odor. Relative density of cs096 solution) 1.3. It can interact with acid and alkali. In the air is easy to be oxidized, heat decomposition and release of sulfur dioxide.

Use
In the field of water treatment, it can be used as an oxygen scavenger for boiler water, drilling mud and closed-loop circulating water cooling to prevent corrosion of equipment by dissolved oxygen. Especially suitable for small and medium-sized low-pressure boilers. In the drilling industry, ammonium sulfite formula and crystalline phase Fe304 (as catalyst) are added to the drilling mud containing montmorillonite, which can effectively remove the dissolved oxygen in the mud and prevent the corrosion of the well pipe. In addition, ammonium sulfite can be used for the production of pure liquid sulfur dioxide, sodium hydrosulfite, hanging block and some dyes and medicines; In the manufacture of synthetic fiber is the raw material for the production of caprolactam; in the pulp and paper industry for pulp cooking and bleaching treatment.

Safety
ammonium sulfite is a low toxicity compound. The concentrated solution has mild irritation to the skin, but short-term contact does not cause harm. After contact with the solution, rinse with water for a moment. The product itself has no risk of fire and explosion. If there is a fire, it can be put out with water. Should be stored in a cool and dry warehouse. The container must be sealed to prevent oxidation in contact with air. Not co-stored with acids or bases.

Niche
For cosmetics, ammonium sulfite formula is used as a hair straightening agent and a hair waving agent. Ammonium based hair products have been made to replace sodium hydroxide-based products due to the destructive nature of sodium hydroxide on hair.
The most common food product with ammonium sulfite is caramel coloring E150d. According to the FDA, caramel coloring contains ammonium, potassium, or sodium sulfite.
Ammonium sulfite is used as a preservative for fixers in photography. When film photographs are being developed ammonium sulfite formula can be one of the reducing agents used to preserve the hypo (sodium thiosulfate or ammonium thiosulfate).
Ammonium sulfite can also be used in the making of bricks. The bricks made using ammonium sulfite formula are mainly used for blast furnace linings.
Ammonium sulfite can be included in lubricants for cold metal working. The lubricants are intended to reduce friction to keep heat production down and keep impurities out of the metals.


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