1. Sodium sulfite has obvious reducing ability. It is easy to be oxidized when it encounters oxidant.2. Oxygen in the air can oxidize sodium sulfite:3. Other unknown oxidants in the air may also oxidize sulfurous acid.If conditions must be said, it is exposure in the air.The rate of oxidation is not too fast.The condition for sulphur dioxide to be oxidized by oxygen in the air is contact with cata...

Zinc oxide is an amphoteric compound and can be combined with acidic substances through its basicity. In the combination of low acid index, zinc oxide produces zinc soap, which improves the wettability of the pigment, makes dispersion easier, and at the same time promotes a slight increase in coating viscosity and reduces precipitation. In high acid index adhesives, it will extremely thicken in th...

1. Sodium metabisulfite is a reducing agent, which is used to treat chromium-containing wastewater in sewage treatment.2. Chromium-containing wastewater must be treated separately according to national standards, and it cannot be discharged to the integrated pool, and the hexavalent chromium concentration must not be higher than 0.1.3. Therefore, the dropping point of sodium metabisulfite is in th...

Sodium sulfite has a high melting point and will not decompose or hydrolyze when it is evaporated to dryness. If it can be hydrolyzed, it will react, and sulfur dioxide will be reabsorbed by sodium hydroxide, so it will not be hydrolyzed. Sodium sulfite is reductive and reacts with O2 to form sodium sulfate upon heating.

When sodium sulfite is oxidized, sodium sulphate is formed, and the unoxidized sulfite ion is reacted with hydrochloric acid to become sulphur dioxide, and cesium chloride is added. Only the sulphate ion which was originally oxidized reacts with cerium ion to form cerium sulfate. precipitation.

Its aqueous solution is unstable in nature and has strong reducibility and is a strong reducing agent. It is easy to absorb oxygen and oxidize when exposed to the air. It is also easy to absorb moisture and deteriorate, and it can take oxygen agglomeration in the air and emit a pungent sour taste. So store in a cool, ventilated warehouse. The relative humidity is kept below 75%. The package is sea...

If there are no other non-volatile substances, the distillation method can be used to take the fraction, and sodium metabisulfite can not be distilled. For example, the alcohol solution contains sodium metabisulfite, which can be distilled and condensed to obtain an alcohol solution containing no sodium metabisulfite.

Excessive free water. The drying temperature is too high.If there is agglomeration of zinc sulfate heptahydrate, there are two ways to solve it:First, in the production process, the free water in the dry product table, if the fluidity is good, of course, the probability of agglomeration will be low. It can be dried with hot air or dried with a roller.Second, add anti-caking agent to the product

One of the zinc sulfate grades, zinc sulfate can be divided into: industrial grade, chemical fiber grade, fertilizer grade (agricultural grade), feed grade, pharmaceutical grade, food grade, etc., according to its use.To achieve chemical fiber grade zinc sulphate, this level is not high, as long as it can be used for chemical fiber production, the most common level is medical grade.

Zinc sulphate can be used on pesticides as well as fertilizers.It can be used to prevent the disease of fruit tree nursery. It is also a common fertilizer for supplementing crop zinc micro-element fertilizer, which can be used as base fertilizer and foliar fertilizer.

Causes of burning: The heat generated by the water cannot be dissipated in time to reach the ignition point of the insurance powder.Sodium dithionite (commonly known as insurance powder) can spontaneously ignite at 250 degrees. It can be burnt when exposed to open flames. It can release a lot of heat and burn when it meets water and acid, and emits sulfur dioxide odor.The powder is not insured, in...

Generally, direct zinc oxide is heavy zinc oxide, and indirect zinc oxide is light. In general, direct method zinc oxide is used in ceramics, glass, enamel, and indirect zinc oxide is used in rubber, phosphating, light industry, EVA, foaming, etc.

The main component of the bleaching powder is calcium hypochlorite. Calcium hypochlorite reacts with CO2 and water vapor in the air to form hypochlorous acid and calcium carbonate (this reaction is actually the reaction of the bleaching powder). If it is not used, it will be light. The solution (which reacts in the dark for a long time) produces oxygen and hydrogen chloride gas (or hydrochloric ac...

Sealed and preserved; because sodium hydroxide can absorb moisture in the air and deliquesce, but also absorb carbon dioxide in the air and deteriorate.

Sealed and preserved; because sodium hydroxide can absorb moisture in the air and deliquesce, but also absorb carbon dioxide in the air and deteriorate.

Different.Formic acid is one of the basic organic chemical raw materials, widely used in pesticides, leather, dyes, pharmaceuticals and rubber industries. Formic acid can be directly used in fabric processing, tanning, textile printing and silage storage, as well as metal surface treatment agents, rubber additives and industrial solvents. Used in the synthesis of various formic acid esters, acridi...

1. The raw coal desulfurization technology can remove about 40% to 60% of inorganic sulfur in coal.2. Give priority to low-sulfur fuels, such as low-sulfur coal and natural gas with low sulfur.3. Improve coal-fired technology to reduce emissions of sulfur dioxide and nitrogen oxides during coal combustion. For example, liquefied coal combustion technology is one of the new technologies that are we...

Closed operation, local exhaust. Prevent dust from being released into the air of the workshop. Operators must be specially trained to strictly follow the operating procedures. Operators are advised to wear self-priming filter dust masks, chemical safety glasses, rubber acid and alkali resistant clothing, and rubber acid and alkali resistant gloves. Avoid dust. Avoid contact with oxidants. Equippe...

Sodium fluorosilicate has a good whitening effect and acts as a whitening agent for clothes during washing. It is a commonly used whitening agent.

Different, the composition requirements are different, the specific provisions are as follows:Industrial grade zinc sulfate:Powders are generally used; the content of metal impurities such as iron and manganese is very strict.Mainly used:1, for the extraction of zinc ore from polymetallic minerals;2. As a raw material for direct use as a sewage treatment agent or as a sewage treatment agent;3. Che...

The direct method is a method of manufacturing zinc oxide invented by the Americans.The production method is to use the waste ash to remove the impurities to obtain the qualified zinc ash, and then add the qualified zinc ash to the coal and lime according to the technical requirements, mix and crush, and the crushed material is pressed by the briquetting machine, and the pressed zinc is pressed. T...

Store in a cool, ventilated warehouse. Keep away from fire and heat. The temperature of the reservoir does not exceed 30 ° C, and the relative humidity does not exceed 80%. Should be stored separately with reducing agent, active metal powder, acid, easy (combustible), etc., should not be mixed.

Zinc oxide ore beneficiation production line for the extraction of zinc oxide is better by the "boiler gas dry method" method. The flotation separation of gangue minerals containing calcium, magnesium, iron, etc., such as calcite, dolomite and limonite, is particularly difficult due to the interaction of the dissolved components with the surface of the mineral. At present, most of the flotation of...

Mainly used in chemistry. Glass, explosives, pyrotechnics, dyes, metallurgy, machinery, enamel and other industries can also be used for meat preservatives. It is very versatile.It is a raw material for the manufacture of potassium nitrate, mine explosives, picric acid, dyes, and the like. A nitrating agent for the manufacture of dye intermediates. The glass industry is used as a defoaming agent, ...

olid sulfur products are flammable solids and should be stored in a cool, ventilated warehouse. Keep away from fire and heat sources during storage and transportation to avoid burning, and do not mix and store with oxidants and phosphorus to prevent explosion. During transportation, bulk should be prevented to prevent the sulfur powder from forming an explosive mixture with air. Liquid sulfur is s...

Sodium sulfite has a high melting point and will not decompose or hydrolyze when it is evaporated to dryness. If it can be hydrolyzed, it will react, and sulfur dioxide will be reabsorbed by sodium hydroxide, so it will not be hydrolyzed. Sodium sulfite is reductive and reacts with O2 to form sodium sulfate upon heating.

One of the zinc sulfate grades, zinc sulfate can be divided into: industrial grade, chemical fiber grade, fertilizer grade (agricultural grade), feed grade, pharmaceutical grade, food grade, etc., according to their use.To achieve chemical fiber grade zinc sulfate, this level is not high, as long as it can be used for chemical fiber production, the most common level is medical grade.

Both polymeric ferric sulfate and ferric sulfate are inorganic and contain ferric ions.The difference is as follows: 1. Polyferric sulfate is a high molecular polymer, and iron sulfate is a low molecular inorganic substance. Therefore, the effects of chemical reactions will be different.

There are many reasons for causing agglomeration of zinc sulfate, mainly:1. The raw materials are not rinsed during production, the chloride ion content is too high, the product particles are too fine, the surface area is large, and it is easy to absorb moisture and agglomerate;2. The temperature of zinc sulphate produced is very high. Many manufacturers prematurely fill the zinc sulphate because ...

Sulfite is generally used as an inhibitor, including sodium sulfite, sulfur dioxide, sulfite and so on. Sodium sulfite and sulfur dioxide, though weaker than sodium cyanide, are less toxic, easily oxidized by air, and wastewater is easy to be treated. When sodium sulfite or sulfite is used as an inhibitor for gold, silver and other precious metals, the precious metals will not be lost. Minerals th...

soda ash light and soda ash dense are soda ash, sodium carbonate is commonly known as soda ash , sodium carbonate is white powder, easily soluble in water, with salt permeability, sodium carbonate without crystal water is soda ash light ,which is white fine particles ; sodium carbonate with crystalline water is soda ash dense, which is white crystal powder . The main difference of soda ash ligh...

Zinc standard solutions formulated with reference oxidizing (dryed) do not require calibration;The zinc solution prepared with zinc sulfate heptahydrate must be calibrated because zinc sulfate heptahydrate may absorb or absorb part of the water, and its composition is not certain, resulting in an inaccurate zinc content, so calibration is required.

The difference between light zinc oxide and heavy zinc oxide is that the method of generating zinc oxide is different. The zinc oxide produced by the direct method is heavy zinc oxide; the zinc oxide produced by the indirect method is light zinc oxide.An example of direct method: obtained by calcining zinc carbonate.The indirect method is to react zinc obtained by electrolysis with oxygen at a hig...

The zinc oxide and the acid or base in the dust ash are reacted with the raw material, and then zinc carbonate or zinc hydroxide is precipitated. After filtration, washing, drying and calcination at 800 ° C, a high-purity light zinc oxide having a particle diameter of 1 to 100 nm is finally obtained.

Sodium metabisulfite is a white or yellow crystalline powder or small crystal with a strong SO2 odor, a specific gravity of 1.4, soluble in water, and the aqueous solution is acidic. When it is in contact with a strong acid, it releases SO2 to form a corresponding salt. When it is left in the air, it oxidizes. It is Na2S2O6, so the product cannot be stored for a long time. Above 150 degrees Celsiu...

When sodium sulfite is oxidized, sodium sulphate is formed, and the unoxidized sulfite ion is reacted with hydrochloric acid to become sulphur dioxide, and cesium chloride is added. Only the sulphate ion which was originally oxidized reacts with cerium ion to form cerium sulfate. precipitation.

Its aqueous solution is unstable in nature and has strong reducibility and is a strong reducing agent. It is easy to absorb oxygen and oxidize when exposed to the air. It is also easy to absorb moisture and deteriorate, and it can take oxygen agglomeration in the air and emit a pungent sour taste. So store in a cool, ventilated warehouse. The relative humidity is kept below 75%. The package is sea...

Sodium carbonate, which does not react with Yuanming powder (sodium sulfate), op-10 is a surfactant and does not react between them. Op-10 is a surfactant used to configure detergents, such as laundry detergent. Sodium carbonate is alkaline and can be used to remove oil. Yuanming powder (sodium sulfate) is a filler used to reduce product costs. Just adding weight doesn't do anything.

Sodium metabisulfite is a white or yellow crystalline powder or small crystal with a strong SO2 odor, a specific gravity of 1.4, soluble in water, and the aqueous solution is acidic. When it is in contact with a strong acid, it releases SO2 to form a corresponding salt. When it is left in the air, it oxidizes. It is Na2S2O6, so the product cannot be stored for a long time. Above 150 degrees Celsiu...

Sodium metabisulfite is a white or yellow crystalline powder or small crystal with a strong SO2 odor, a specific gravity of 1.4, soluble in water, and the aqueous solution is acidic. When it is in contact with a strong acid, it releases SO2 to form a corresponding salt. When it is left in the air, it oxidizes. It is Na2S2O6, so the product cannot be stored for a long time. Above 150 degrees Celsiu...