Precautions for sodium nitrate, is sodium nitrate edible?

Sodium nitrate precautions and emergency treatment methods:

1. Emergency treatment of leakage.

Isolate leakage contaminated areas and restrict access. Emergency responders are advised to wear self-contained breathing apparatus and general work clothes. Do not come into direct contact with spills.

Small leakage: Rinse with plenty of water, dilute the wash water and put it into the wastewater system. Massive leaks:

Collect** or transport to a waste disposal site for disposal.

2. Protective measures.

Respiratory protection: When you may be exposed to dust, it is recommended to wear a self-priming filtering dust mask.

Eye protection: Wear chemical safety glasses.

Body protection: Wear polyethylene protective clothing.

Hand protection: Wear neoprene gloves.

Others: Smoking, eating and drinking are prohibited on the work site. After work, shower and change clothes. Practice good hygiene.

3. First aid measures.

**Contact: Remove contaminated clothing and rinse with plenty of running water.

Eye contact: Lift the eyelid and rinse with running water or saline. Medical treatment.

Inhalation: Quickly remove from the scene to fresh air. Keep your airways open. If you have difficulty breathing, give oxygen. If breathing stops, artificial respiration is performed immediately. Medical treatment.

Ingestion: Rinse your mouth with water and give milk or egg whites. Medical treatment.

Fire extinguishing method: Firefighters must wear gas masks and full-body firefighting suits. Extinguish the fire with mist water and sand. Never shoot water directly into the melt to avoid causing a serious flowing fire or causing a violent boiling splash.

It can be eaten in small amounts.

Sodium nitrite is an industrial salt, which is a white opaque crystal that resembles table salt. Nitrite has sodium nitrite in humans.

It can oxidize the low hemoglobin in the blood to methemoglobin, lose the ability to transport oxygen and cause tissue hypoxic damage. Nitrite is not only a carcinogen, but it can cause food poisoning when ingested, and 3g can be fatal. Nitrite is a kind of food additive, which plays a role in coloring and preservative, and is widely used in animal foods such as cooked meat, enemas and canned food.

In view of the many beneficial functions of nitrite for meat curing, it is still allowed to be used to marinate meat in countries around the world, but the amount used is strictly limited.

Don't eat it if you have nothing to do, it will produce nitrite, which is a carcinogen.

Sodium nitrite is toxic, and it is mentioned in junior high school chemistry. Because it tastes delicious, this will be added, and it is not good to eat more.

Sodium nitrate is toxic and is not recommended to consume!

No! Salt for industrial use....It is often used by many illegal vendors

Things always change from quantity to quality, and eating a small amount is not a big problem.

Sodium nitrate in table salt is mainly produced by the oxidation of sodium salts by pollutants during processing and preservation. To remove sodium nitrate from table salt, the following methods can be used:

1.Water soaking method: Soak the food album only salt in clean water for 10-15 minutes, and then rinse it several times with clean water to remove the nitrate content in the water, so as to remove the sodium nitrate in it.

2.Cleaning method: Put the salt into the pot and boil, then pour off the water, repeat more than 3-4 times, and then wash it with water.

3.Drying: Salt is dried in the sun to expose it to the air to help remove sodium nitrate.

It is important to note that you should choose clean table salt when using the above methods. In addition, although sodium nitrate is harmful to human health, the content of salt in table salt usually does not exceed a certain safety standard, so there is no need to worry too much.

Sodium nitrate can be removed from table salt by filtration

Take a clean glass container and add table salt to the smiley boy.

Slowly dilute the table salt with clean water until completely dissolved.

Take a piece of filter paper, fold it into a strainer, and place the nazheng over the funnel.

Pour the table salt solution from the container into a funnel and filter. As a result of filtration, a table salt solution with sodium nitrate removed.

The filtered salt solution can be volatilized and dried to pure salt.

Precipitate the excess silver ions, filter them, and heat the filtered solution out of the excess HCl.

1. Sodium nitrate.

Store in a cool, ventilated warehouse sedan room. Keep away from fire and heat sources. The storage temperature does not exceed 30, and the relative humidity is auspicious.

no more than 80%;

2. Sodium nitrate should be stored separately from reducing agents, active metal powders, acids, and flammable (combustible) materials, and should not be mixed. The storage area should be equipped with suitable materials for the closure banquet to contain the spillage.

3. Sodium nitrate is a colorless transparent or white microblot yellow diamond-shaped crystal. So we must pay more attention when storing.

1. Instability Concentrated nitric acid will decompose nitrogen dioxide under light and turn yellow, so concentrated nitric acid is often placed in a brown reagent bottle and placed in a dark place.

2. Strong oxidation In the reaction, non-metals are oxidized into the most ** oxide or its corresponding oxygen-containing acid.

3. Passivate aluminum and iron Cold concentrated nitric acid can passivate iron and aluminum. Hot concentrated nitric acid does not passivate it.

4. Danger and strong acidity Danger: decomposition when heated, producing toxic smoke; Strong oxidizing agent, reacts violently with combustibles and reducing substances,**. Strongly acidic, it reacts violently with macro-bond bases, corrodes most metals (except aluminum and its alloys), generates spring and nitrogen oxides, and reacts very violently with many commonly used organic compounds, causing disasters and dangers.

Answer: Sodium nitrate (nano3) is white or light gray, yellow-brown crystalline in appearance. It contains nitrogen (N) 15% to 16%, sodium (Na) 26%, very soluble in water, and strong hygroscopicity, easy to form hard lumps.

Sodium nitrate is a physiological alkaline fast-acting fertilizer, which is combustible, so it should never be mixed with flammable substances. Sodium nitrate formed into hard lumps should be gently ground with wooden sticks before application, and must not be violently hit with iron, otherwise it will occur, causing accidents and unnecessary losses.

Sodium nitrate is more suitable for neutral or acidic soils than for salinized soils. For crops, it is often used in sugar beet crops.

The application methods of sodium nitrate are mainly as follows:

1) It is most suitable for top dressing. After sodium nitrate is applied to the soil, it can be quickly dissolved and dissociated into sodium ions and nitrate ions, which can be absorbed and utilized by crops. It is important to highlight that:

When sodium nitrate is used as top dressing, it should be applied in small amounts in fractions, so as to avoid the leaching of nitrate nitrogen.

2) Sodium nitrate can be used as basal fertilizer in arid areas, but it should be applied deeply, and it is best to mix it with well-rotted organic fertilizer, so that the effect will be better.

3) Long-term application of sodium nitrate is easy to cause soil compaction, in order to prevent this problem, sodium nitrate should be applied together with organic fertilizer or calcareous fertilizer such as superphosphate.

The following issues should be noted when using sodium nitrate:

1) Paddy fields and saline-alkali land should not be applied.

2) Tea plantations in the south are also not suitable for application, because tea trees are suitable for acidic soil, sodium nitrate is a physiological alkaline fertilizer, and it is rainy in the south, which is easy to leach.