Whether sodium carbonate must be kept in isolation from air

Anhydrous sodium carbonate is water absorbent, forming hydrated sodium carbonate, and finally sodium chloride is formed. Therefore, anhydrous sodium carbonate and water less than 10 need to be isolated from air storage, and sodium chlorahydrate does not need to be isolated from air storage.

Sodium carbonate absorbs water from the air and becomes a compound containing crystalline water.

Sodium carbonate reacts with water and CO2 in the air to form sodium bicarbonate.

It is necessary to seal and preserve.

Closed operation with enhanced ventilation. Operators must be specially trained and strictly follow operating procedures. It is recommended that operators wear self-priming filtering dust masks, chemical safety glasses, anti-poison penetration overalls, and rubber gloves.

Avoid dust generation. Avoid contact with acids. When handling, it is necessary to load and unload lightly to prevent damage to the packaging and containers.

Equipped with emergency equipment for spill treatment. Empty containers may leave harmful substances behind. When diluting or preparing the solution, the alkali should be added to the water to avoid boiling and splashing.

Precautions for storage.

Store in a cool, ventilated warehouse. Keep away from fire and heat sources. It should be stored separately from acids, etc., and should not be mixed. The storage area should be equipped with suitable materials to contain the spill.

Prohibited substances] strong acid, aluminum, fluorine.

Shipping precautions.

The packaging should be complete and the loading should be secure when it is shipped. During transportation, it is necessary to ensure that the container does not leak, collapse, fall, or damage. It is strictly forbidden to mix with acids, edible chemicals, etc.

During transportation, it should be protected from exposure to sun, rain and high temperature. Vehicles should be thoroughly cleaned after transportation.

No, sodium carbonate is stable in the air.

Yes, water vapor and carbon dioxide in the air react with it to form sodium bicarbonate.

Yes. Otherwise, it will become sodium carbonate hydrate.

Sodium bicarbonate. It should be kept in a brown reagent bottle to prevent easy decomposition in light of light"

The above sentence is false, sodium bicarbonate only decomposes when heated, and the temperature of sunlight is not high enough.

Liquid bromine. It is volatile and highly toxic, and should be contained in a fine-mouthed bottle, and water should be added to the liquid surface (water is lighter than liquid bromine, and can float on top of liquid bromine to form a "water seal"), and the bottle mouth should be sealed with wax and placed in a cold and dark place.

Nitric acid. Generally, it should be placed in a brown reagent bottle, or wrapped in black paper, sealed and stored in a cold and dark place.

Sodium percarbonate is unstable and easy to decompose when exposed to heat and water, so it should be sealed and preserved.

Sodium percarbonate is a white crystalline particle that, when dissolved in water, decomposes to produce sodium carbonate and hydrogen peroxide.

Sodium percarbonate is mainly used as a bleaching agent and oxidant, as well as a detergent, cleaning agent and fungicide in chemical, papermaking, textile, dyeing and finishing, food, medicine, health and other departments.

Precautions for storage.

The room temperature is below 40°C and the relative humidity is kept below 75%.

Pay attention to moisture and rain. Keep the container tightly sealed and make sure that the label is intact. When handling, it is necessary to load and unload lightly to prevent damage to the packaging and container, and pay attention to maintaining the normal pressure discharge of the container. It is not suitable for transportation in rainy days.

It should be stored separately from flammable or combustible materials, reducing agents, sulfur, phosphorus, etc., and should not be mixed storage and transportation. Avoid contact with other substances that can easily cause the product to decompose.

Precautions for use.

Avoid contact with eyes, ** and clothing. Keep the ambient air flowing during operation.

Avoid contact with flammable and organic substances.

The container should be labeled and kept tightly sealed when not in use.

Wash hands and other body contact parts after the procedure.

Store in a dry, clean and well-ventilated warehouse. Keep away from fire, heat and direct sunlight. The room temperature is below 40°C and the relative humidity is kept below 75%.

Pay attention to moisture and rain. Keep the container tightly sealed and make sure that the label is intact. When handling, it is necessary to load and unload lightly to prevent damage to the packaging and container, and pay attention to maintaining the normal pressure discharge of the container.

It is not suitable for transportation in rainy days. It should be stored separately from flammable or combustible materials, reducing agents, sulfur, phosphorus, etc., and should not be mixed storage and transportation. Avoid contact with other substances that can easily cause the product to decompose.

Use to avoid contact with eyes, ** and clothing. Keep the ambient air flowing during operation. Do not swallow, do not inhale dust, mist, gas.

Do not eat, drink or smoke in the working environment. Avoid contact with flammable and organic substances. The container should be labeled and kept tightly sealed when not in use.

Wash hands and other body contact parts after the procedure.

Disposal method.

Handled in accordance with relevant laws and regulations.

Outer packaging disposal method.

Empty and wash the container, then dispose of it in accordance with the relevant regulations.

Shipping Information. The general transport product name .........Sodium percarbonate.

UN No. .........un3378

Dangerous goods are ......... class

The packaging logo .........oxidant).

Packaging category .........iii

Sodium percarbonate is non-toxic, odorless, and has strong corrosiveness, decomposes when heated, produces oxygen, aggravates the combustion of flammable substances, and releases hydrogen peroxide and soda ash after being dissolved in water. It is mainly used as a bleach and oxidant, as well as a detergent, cleaning agent and fungicide in chemical, papermaking, textile, dyeing and finishing, food, medicine, health and other departments.

Sodium percarbonate, chemical formula: 2Na2CO3·3H2O2 (or Na2CO4), also known as sodium peroxide, commonly known as solid hydrogen peroxide, is an inorganic salt, white granular powder, its aqueous solution is alkaline, can be decomposed into sodium carbonate and hydrogen peroxide.

Sodium percarbonate is usually used as an adjuvant for laundry detergent, aerobic bleaching, and can effectively increase dissolved oxygen in fish pond management, and in commercial use, it is usually wrapped with substances such as sulfate and silicate to obtain coated sodium percarbonate to improve the storage stability requirements in laundry detergent formulations. Compared with the traditional laundry bleaching aid for sodium perborate, the advantage of sodium percarbonate is the stability of storage and good compatibility with other laundry detergent ingredients, which is incomparable and irreplaceable with sodium perborate. In terms of chemical structure, their essential difference is that sodium percarbonate is an adduct, while sodium perborate is a bonded product.

Sodium percarbonate is placed for a long time to absorb moisture in the air and release hydrogen peroxide, which in turn will release oxygen na co + h o = na co + h o

h₂o₂=h₂o+o₂î