what is sodium bicarbonate

Baking soda, or Sodium Bicarbonate, is a fine white crystal that is less soluble in water than Sodium carbonate. It’s an industrial chemical, potentially toxic. The solid starts to decompose gradually into sodium carbonate, carbon dioxide and water above 50℃, and is completely decomposed at 440℃. Sodium bicarbonate is an acid salt formed after neutralizing a strong base with a weak acid. This property enables it to be used as a leavening agent in food preparation. Sodium bicarbonate will remain after the effect of sodium bicarbonate, use too much will make the finished product alkali taste.

Chemical properties
It breaks down easily when heated. Slow decomposition in humid air. At about 50℃, the reaction begins to form CO₂, and at 100℃ all becomes sodium carbonate. Its aqueous solution begins to decompose into carbon dioxide and sodium carbonate at 20℃, and is completely decomposed at the boiling point. Soluble in 10 parts water at 25℃, soluble in 12 parts water at about 18℃, insoluble in ethanol. The solution made of cold water without agitation is only slightly alkaline to phenolphthalein paper, and its alkalinity is increased by placing or increasing the temperature. The pH value of 0.1mol/L water solution freshly prepared at 25℃ was 8.3. Low toxicity, MEDIAN lethal dose (rats, orally)4420mg/kg.

Folding reacts with an acid
Reaction with HCl: NaHCO₃+HCl ====NaCl+H₂O+CO₂↑

Reaction with CH₃COOH: NaHCO₃+CH₃COOH====CH₃COONa+H₂O+CO₂↑

Folding reacts with a base
Reaction with sodium hydroxide: NaHCO₃+NaOH==== Na₂CO₃+ H₂O

Reaction with calcium hydroxide: the dosage of sodium bicarbonate should be divided into too much and a small amount.

Small amount: NaHCO₃+ Ca(OH)₂==== CaCO₃↓+ NaOH + H₂O

Excessive: 2NaHCO₃+ Ca(OH)₂==== Na₂CO₃+ CaCO₃↓+ 2H₂O

Folding reacts with salt
Reaction with CuSO₄ : To form basic copper carbonate and sodium sulfate with water and carbon dioxide

Fold the hydrolysis
With aluminum chloride: 3NaHCO₃+ AlCl₃====Al(OH)₃↓+ 3CO₂↑+ 3NaCl

Aluminum sulfate and hydrolysis: Al ₂ SO ₄) ₃ + 6 nahco ₃ = = 3 na ₂ SO ₄ + 2 Al (OH) ₃ left + 6 co ₂ write

Fold the heating
Decomposition: 2NaHCO₃==△== Na₂CO₃+ H₂O + CO₂↑

Fold the ionization
Sodium bicarbonate ionization equation NaHCO₃=Na+ + HCO₃-

Folding safety terms
Avoid contact with skin and eyes.

Fold edit this section of physics and chemistry introduction
Folding formula
NaHCO ₃

Relative molecular weight of folding
84.01

Folding traits
Natural baking soda
Natural baking soda
Eat NaHCO₃

Properties: white powder or monoclinoid crystalline powder, odorless, salty, soluble in water, but less soluble than sodium carbonate in water, insoluble in ethanol, aqueous solution is slightly alkaline. It breaks down easily when heated. Slow decomposition in humid air.

Carbon dioxide begins to be lost at about 50℃, and all becomes sodium carbonate at 100℃. Its aqueous solution begins to decompose into carbon dioxide and sodium carbonate at 20℃, and is completely decomposed at the boiling point. Soluble in 10 parts water at 25℃, soluble in 12 parts water at about 18℃, insoluble in ethanol. The solution made of cold water without agitation is only slightly alkaline to phenolphthalein paper, and its alkalinity is increased by placing or increasing the temperature. The pH value of 0.1mol/L water solution freshly prepared at 25℃ was 8.3. Low toxicity, MEDIAN lethal dose (rats, orally)4420mg/kg.

Folding storage
Keep dry, out of light and sealed.

Folding purpose
Analytical reagents. Organic synthesis. Pharmaceutical, ie for acid in the stomach Leaven (for baking cakes) Fire extinguishing agent (foam or dry powder)

PH > 7, alkaline, but does not contain OH-, is not a base, belongs to acid carbonate (bicarbonate).

folding

The basic parameters
CAS number 144-55-8
EINECS no. 205-633-8
RTECS VZ0950000 no.
Chemical formula NaHCO ₃
The molecular weight of 84.01
The molar mass is 84.007 grams per mole
Appearance of white crystalline crystal
Density 2.159 g/cm3 (solid)
Melting point 270°C decomposition
Solubility in water 7.8g/100ml, 18 °C
Refractive index (nD) 1.500
MSDS External MSDS
The main hazard is respiratory irritation
The ignition point is not flammable
Standard molar heat of formation δ fHmθ -950.8kJ ·mol^-1
The gibbs free energy δ fGmθ -851.0 kJ·mol^-1 is generated by the standard mole
Standard entropy Smθ 101.7 J·mol^-1·K^-1

Physical properties
Sodium bicarbonate is white crystal, or opaque monoclinic system fine crystal. The proportion of 2.15 g. Odorless, salty, soluble in water, insoluble in ethanol. Its aqueous solution is slightly alkaline due to hydrolysis, and is easy to decompose when heated. It quickly decompose above 65℃, completely lose carbon dioxide at 270℃, and has no change in dry air, but slowly decompose in humid air. Solubility: 7.8g, 18 °C; 16.0 g, 60 ° C.

Fold to edit this paragraph of drug analysis
Baking soda
Baking soda
Method name: Sodium bicarbonate — determination of sodium bicarbonate — neutralization titration method

Application: Sodium bicarbonate (NaHCO₃) was determined by neutralization titration.

This method is suitable for the determination of sodium bicarbonate.

Method principle: take appropriate amount of test sample, add water and sulfuric acid titration solution (0.5mol/L), slowly boil to remove carbon dioxide, cool, add phenolphthalein indicator solution, titration with sodium hydroxide titration solution (1mol/L), and the titration result is corrected with blank test. Each 1mL sulfuric acid titration solution (0.5mol/L) was equivalent to 25.43mg Li2CO₃, calculated, and obtained.

Reagent: 1. Water (fresh boiled at room temperature)

2. Hydrochloric acid titration solution (0.5mol/L)

3. Methyl red – bromocresol green mixed indicator liquid

4. Benchmark anhydrous sodium carbonate

Folding instrument and equipment
Sample preparation: 1. Hydrochloric acid titration solution (0.5mol/L)

Preparation: Take 45mL hydrochloric acid, add water to make 1000mL, shake well, get 0.5mol/L hydrochloric acid titrant.

Calibration: Take about 0.8g of datum anhydrous sodium carbonate dried at 270-300 ℃ to constant weight, weigh it precise, add 50mL of water to dissolve it, add 10 drops of methyl red-bromocrephenol green mixed indicator solution, drop the liquid until the solution turns from green to purple, boil it for 2 minutes, cool it to room temperature, and continue titration until the solution turns from green to dark purple. Each 1mL of hydrochloric acid titrant (0.5mol/L) was equivalent to 26.50mg of anhydrous sodium carbonate. According to the consumption of the liquid and the dosage of anhydrous sodium carbonate, calculate the concentration of the liquid.

2. Methyl red – bromocresol green mixed indicator liquid

Take 20mL ethanol solution of 0.1% methyl red, add 30mL ethanol solution of 0.2% bromocresol green, and shake well.

Folding Procedure
Take 1g of the product, measure it precise, add 50mL of water to dissolve it, add 10 drops of methyl red-bromocresol green mixed indicator solution, titrate it with hydrochloric acid titration solution (0.5mol/L) until the solution turns from green to purplish red, boil it for 2 minutes, cool it to room temperature, and continue titrating until the solution turns from green to dark purple. Each 1mL of hydrochloric acid titration solution (0.5mol/L) was equivalent to 42.00mg of NaHCO₃.

Note 1: “Precise weighing” means that the weight shall be accurate to 1/1000 of the weight, and “precise weighing” means that the accuracy of the volume shall meet the precision requirements of the pipette of this volume in the national standard.
Baking soda
Baking soda

Note 2: Moisture determination by drying method, to take 2 ~ 5 g, of the tile drying to constant weight of sector said in a bottle, the thickness of no more than 5 mm, loose the product no more than 10 mm, precision said, open the cap in 100 ~ 105 ℃ drying 5 hours, will cap is good, displacement in the dryer, cooling for 30 minutes, precision according to weight, dry again at same temperature for 1 hour, Cool and weigh until the difference between two consecutive weights is no more than 5mg. Calculate the water content (%) of the test sample according to the weight loss.

Bibliography: Pharmacopoeia of the People’s Republic of China, national Pharmacopoeia Commission, China Medical Science and Technology Press, 2010 edition, part 2, P1097.

Fold edit this section generation method
Folding gas phase carbonization
The sodium carbonate solution is carbonized by carbon dioxide in the carbonization tower, and then separated and dried to obtain the finished product.
Baking soda experiment
Baking soda experiment
Na2CO₃+ CO2 (g) + H2O == 2NaHCO₃

Folded gas solid phase carbonization
The sodium carbonate is placed on the reaction bed and mixed with water. Carbon dioxide is blown from the bottom. After carbonization, it is dried, crushed and packed to obtain the finished product.

Na2CO ₃ + CO2 + H2O = = = = & gt; 2 nahco ₃

Supplement: Sodium carbonate can also react with an insufficient amount of dilute hydrochloric acid to produce sodium bicarbonate.

Na2CO ₃ + HCl = = = = & gt; NaCl + NaHCO ₃

Collapsible edit the main use of this section
Usage of baking soda
Usage of baking soda
Sodium bicarbonate can be used directly as a raw material in the pharmaceutical industry to treat hyperacidity in the stomach. It can also be used in film production, leather tanning, mineral processing, smelting, metal heat treatment, and used in fiber, rubber industry, etc. It is also used as a detergent for wool, as well as for agricultural soaking of seeds. Food industry in one of the most widely used loose agent, used in the production of biscuits, cakes, steamed buns, bread, etc., is the soda drink carbon dioxide generation agent; It can be combined with alum to make alkaline baking powder, and can also be combined with soda ash to make civil stone alkali. It can also be used as a butter preservative. Used in the production of acid and alkali fire extinguishers and foam fire extinguishers. Rubber industry uses it with alum, H pore-making agent to play a uniform role in the production of rubber, sponge. Used in the metallurgical industry as a flux for casting steel ingot. Machinery industry used as casting steel (foundry) sand molding additives. Printing and dyeing industry used as dye printing fixing agent, acid and alkali buffer, fabric dyeing and finishing of the rear treatment agent. Baking soda can be added to the dyeing to prevent the yarns from producing color flowers. The pharmaceutical industry is used as a raw material for making antacids. [2]

Used as analytical reagent, inorganic synthesis, pharmaceutical industry, treatment of acidemia and food industry starter, soda and cold drink of carbon dioxide generation agent, butter preservative. It can be directly used as raw material for pharmaceutical industry, detergent for wool, foam extinguishing agent, bath agent, alkaline agent and leavening agent. It is often used with ammonium bicarbonate as leavening agent for biscuits and pastries. The added amount of wheat flour was 20g./kg. Can help formulate a CO2-producing foaming agent for solid cooling drinks with lime and tartaric acid, etc. Because of the harmless weak alkaline agent, adding about 0.1% ~ 0.2% when washing vegetables can make green stability. When using alone, because be subjected to heat decompose to show strong alkalinity, when using at bread, take yellow, destroy the vitamin in wheat, had better use with acid material such as calcium hydrogen phosphate. Can also be used for food hot bleaching, to astringency. Because it can raise the pH value, it can improve the water holding capacity of protein, promote the softening of food tissue cells, promote the dissolution of astringent flavor components. It can dedanate goat milk (dosage 10 ~ 20mg/kg). As acidity regulator and chemical leavening agent, it can be used in all kinds of food which need to add leavening agent according to production requirement. [1]

Folding medicine use
Sodium bicarbonate
Baking soda
Baking soda
[English name]NatriiBicarbonas

[Molecular formula]NaHCO₃

[Properties] White crystalline powder; No odor, salty taste; In humid air that slowly decompose, aqueous solution placed a little longer, or shaking, or heating, alkalinity is increased. Soluble in water, insoluble in ethanol.

[Action] This product is a weak base, after oral administration can quickly neutralize gastric acid, its acid – resisting effect is weak and short. In addition, there is also the role of alkaline solution.

Suitable for excessive gastric acid, indigestion and alkalization of urine; Intravenous administration for acidosis; External ear drops to soften an eye wax; 2% solution sitz bath for mycotic vaginitis.

[Usage and dosage] Oral: 0.3 — 2g each time, 0.9 — 6g daily; Children 0.1.1.0g, 3 times a day.

[Precautions]① Avoid patients with ulcer disease that may produce perforation; Avoid compatibility with acid drugs. ② When taken orally, a large amount of carbon dioxide gas is produced, which increases the pressure in the stomach. For patients with gastric ulcer, the ulcer surface is stimulated, and there is even the risk of gastric perforation. At the same time, carbon dioxide stimulates the gastric mucosa, causing secondary gastric acid secretion. Excessive dosage can cause alkalosis.

Storage sealed and stored in a dry place. Shelf life one year

Tablets: 0.3g and 0.5g each.

Tabellaena tribicar — bonatisCompositae: Each tablet contains 0.25 — 0.35 g sodium bicarbonate, a little peppermint oil and sugar. It has stomach-strengthening and anti-acid effect, 1-4 tablets each time, 3 times a day, taken before meals.

TabellaeRheietNatriiBi — carbonatis: Each tablet contains 0.15g of rhubarb, 0.15g of sodium bicarbonate and a little peppermint oil, for excessive gastric acid, indigestion and loss of appetite, 1-3 tablets each time, 3 times a day, taken before meals.

Tabellaesippyi: No. I: Each tablet contains 0.3g sodium bicarbonate and 0.3g magnesium oxide. No. R: 0.3g sodium bicarbonate and 0.3g calcium carbonate per tablet. For excessive gastric acid and duodenal ulcer, no. E may cause constipation, take the two alternately, depending on the patient’s diarrhea or constipation. Oral: 2-4 tablets each time, 3-4 times a day, before meals.

Sodium bicarbonate is weakly alkaline and an absorbent antacid. After oral administration, can quickly neutralize gastric acid, the effect is rapid, and maintain short, and produce a variety of shortcomings such as carbon dioxide. As an antacid, it is not suitable to be used alone. It is often used together with calcium carbonate or magnesium oxide to form sibitus powder. In addition, it can alkalify urine and be taken with iodiamine to prevent sulfanilamide from crystallizing out in urine. Combined with streptomycin can enhance the antibacterial effect of urinary tract. The acidemia was corrected by intravenous administration. Give 5% drip of 100-200 ml, 5 ml per kg of child weight. Gynecology is used for fungal vaginitis, with 2%-4% solution sitz bath, once every night, 500-1000 ml each time, for 7 days. Soften your eye wax with external ear drops (3% solution, 3-4 times daily). Injection: 10 ml branch containing 0.5 grams of drug; A 100ml branch contains 5 grams of the drug. This product is available over-the-counter in tablets and drops only.

Folded poultry feed
Laying hens

Adding proper amount of sodium bicarbonate to summer laying hens’ diet can improve laying rate and eggshell strength. The results show that when the ambient temperature increases by 1℃ from 25 ℃ to 30℃, the laying rate decreases by 1.5% and the egg weight decreases by 0.3g. Ran Rujun et al. (1990) conducted a trial with 53-week-old laying hens in summer. Each layer in the experimental group was added 0.3g sodium bicarbonate to the basal diet (containing 0.2% salt) every day, while the layer in the control group was not added sodium bicarbonate and the diet contained 0.3% salt. Results Laying rate, eggshell density, eggshell percentage and eggshell thickness in experimental groups were increased by 11.15%, 0.20%, 1.10% and 3.57%, respectively, compared with the control group. 0.05). Liu Shenting et al. (1987) added 0.5% sodium bicarbonate to the summer diet of Beijing white laying hens, and the result was that the laying rate was increased by 3.3%, the eggshell quality was increased by 0.55 specific weight grade, and the blood alkali was stored
Usage of baking soda
Usage of baking soda
High 45 mg/L.

Zhou Ming (1996) studied the suitable ratio of chloride and bicarbonate in the diet of laying hens in high temperature season. Adding 0.2% sodium chloride (0.35%) and 0.2% sodium bicarbonate (0.38%) to the diet of laying hens in high temperature season can significantly improve laying rate, eggshell quality and feed conversion rate (P< 0.01). The optimum ratio of chloride and bicarbonate in the diet of laying hens is 35:38.

According to the research conducted by researchers of ICI company (1988), sodium bicarbonate was added to the feed of laying hens at different levels of 0.1% ~ 1.0% for 8 consecutive months. The results showed that the laying rate of all groups added sodium bicarbonate increased, and the strength of eggshell could be increased by 8% at the maximum. When 0.3% sodium bicarbonate was added to the standard laying hens’ feed, the laying rate decreased with age, and the broken eggs decreased by 1% ~ 2%. They also studied the interaction between sodium bicarbonate and phosphorus. When sodium content was 0.55%, phosphorus content was 0.30%, and egg production rate was 75%. Phosphorus content is 0.75%, laying rate is 77%. The results also show that the utilization rate of nitrogen will be increased by 3% due to the addition of sodium bicarbonate.

pathogenies

Wu Lingqian et al. (1998) reported that 0.4% sodium bicarbonate was added to the diet of laying ducks in midsummer, and the amount of salt was reduced from 0.3% to 0.15%, resulting in a significant increase in laying rate by 5.8% (P< 0.05); Broken soft egg rate, death rate download obvious, the difference is very significant (P< 0.01); Feed compensation increased by 6.8%, and the difference was significant (P< 0.05).

chicken

Adding 0.1% ~ 0.5% sodium bicarbonate into the feed of broilers has obvious effect on improving the carcass grade and weight gain of broilers. British researchers reported that using sodium bicarbonate instead of sodium chloride as the source of sodium in the feed of broilers reduced the amount of drinking water and improved the feeding condition of broilers. When the dietary sodium content was 0.12% to 0.28%, the body weight of broilers aged 4 weeks was 889g in the sodium bicarbonate diet group and 861g in the sodium chloride diet group. The difference was significant by anova. Adding bicarbonate to the feed of broilers can also reduce mortality and reduce the incidence of certain diseases. Owen et al. (1994) showed that the addition of sodium bicarbonate to the corn-soybean meal practical diet alkalized the diet and significantly reduced the incidence of ascites. At high altitude (3000m altitude), 42% of broilers fed the basal diet died from ascites, but only 24% of broilers fed the basal diet supplemented with 1% sodium bicarbonate died from ascites, which significantly reduced the mortality rate. According to Phelps (1989), adding 10g sodium bicarbonate per 1kg of broiler feed with 90g fish meal significantly reduced the incidence of chicken stomach erosion. The results showed that the mortality rate of broilers aged 42 to 63 days was 4.88% when adding 0.63% sodium bicarbonate to the diet at 28℃, while that of the group without sodium bicarbonate was 7.85%. Considering to maintain the acid-base balance of chickens, adding sodium bicarbonate could reduce the death rate caused by heat shoot-out.

Mechanism of action

· Sodium bicarbonate can neutralize gastric acid, dissolve mucus, reduce the viscosity of digestive juices, strengthen gastrointestinal contraction, and play the role of strengthening stomach, inhibiting acid and increasing appetite.

· Adding sodium bicarbonate in the feed can supplement the reduction of carbonate in the blood caused by heat wheezing (excessive CO2 exhalation) of poultry, so as to improve the body’s calcium metabolism.

· Adding sodium bicarbonate to the feed can improve the mobility of phosphorus in egg birds. In order to form a good eggshell, it is necessary to maintain the appropriate concentration of phosphorus in blood. Sodium bicarbonate can maintain the concentration of phosphorus in blood at the optimum level necessary for the formation of eggshell.

· Sodium bicarbonate can be decomposed in the digestive tract to release CO2, thus taking away a lot of heat, which is conducive to maintaining the body’s thermal balance when hot.

· Adding sodium bicarbonate to the feed can provide sodium source and keep the appropriate sodium concentration in the blood. When sodium and chlorine are in the range of 0.14% — 0.28% and 0.20% — 0.24%, the ratio of sodium and chlorine is suitable for laying rate, egg weight, eggshell formation and feed efficiency of laying hens. The optimal dietary mineral levels of broiler chickens are 0.15% — 0.20% sodium, 0.80% potassium and 0.12% — 0.15% chlorine. However, it is difficult to balance sodium and chlorine in feed with sodium chloride in the above range, and the increase of the dosage of choline chloride exacerbates the imbalance of sodium and chlorine.

Folding home cleaning
Allergy to scour person, might as well add a little baking soda in washing bowl water, both do not burn a hand, can wash bowl, dish again very clean. You can also use baking soda to scrub stainless steel, copper, or iron POTS, and to clean up the dirt in hot water bottles. The method is to dissolve 50 grams of baking soda in a cup of hot water, then pour it into the bottle and shake it up and down, the scale can be removed. Soak a coffee pot and teapot in hot water and add 3 teaspoons of baking soda to remove stains and odors.

Put the box of baking soda open in the refrigerator to get rid of odors. You can also mix baking soda with warm water to clean the inside of the refrigerator. Sprinkling baking soda in trash cans or any other odor-prone areas can be a great deodorant.

If you have a pet, sprinkle baking soda on your carpet to get rid of urine odor. If the cement floor, you can sprinkle baking soda, add a little vinegar, brush the floor with a brush, and then rinse with water.

Sprinkle a little baking soda on a wet cloth to scrub plastic parts and housings of household appliances.

Fold personal cleaning and grooming
Usage of baking soda
Usage of baking soda

Use baking soda as a deodorant. Remove body odor by mixing a cup of baking soda with two tablespoons of starch in a plastic container and applying it to odorous areas.

Baking soda is a mildly abrasive cleaner. Add a little baking soda to your toothpaste to neutralize odors and act as a whitening agent. Put a little baking soda in your shoes to absorb moisture and odors.

Add a little baking soda to your facial cleanser, or use baking soda and oatmeal as a mask to help improve your skin. Add a small amount of baking soda to your shampoo to remove residual gel and setting cream.

Chlorine in the pool can damage your hair. Add a little baking soda to your shampoo to repair damaged hair.

Add a little baking soda to your toothpaste while brushing to help remove rust and plaque. Repeated several times, the teeth as white as jade.

Sprinkle baking soda evenly on the bottom of a charred aluminum pan and soak it in a bubble. After a few hours, the char will be easily wiped off.

Folding cleaning scales
Usage of baking soda
Usage of baking soda

In the thermos bottle into the concentration of 1% of the baking soda solution about 500 grams, gently shake, thermos bottle scale can be removed. Decontamination with dirt at the bottom of iron, a wet towel can be folded into the shape of a with iron base approximation, the towel layer evenly sprinkle baking soda, and then iron, turning on the power supply when the temperature reached 100 degrees, the back and forth on the wet towel to rub is brushed, stay invisible water vapor, to wipe away the baking soda, electric iron at the bottom of the dirt is removed.

Remove mildew: refrigerator appears when mildew taste, usable the bicarbate soda water of 20% concentration is swabbed, can dispel mildew taste already can remove bilge again.

Deswelling: if bee stings, baking soda can be mixed into paste coated on the affected area, it has the effect of deswelling and pain relief.

Fade yellow: when silk dress irons yellow, usable a few bicarbonate of soda is moved into paste besmear to be in scorched yellow place, after waiting for water to evaporate, the wet towel ironing on the mat again is ironed, scorched yellow trace can disappear.

Folded chemical material
Sodium bicarbonate is also one of the raw materials used by The famous Mr. Hou Debang to manufacture soda ash. At present, nearly 30% of soda ash is still produced through the thermal decomposition of sodium bicarbonate in China.

Collapseedit this section note
Store in dry and ventilated indoor warehouse, take care to prevent bags from breaking or breaking during transportation. Edible bicarbonate of soda shall not be stored and transported together with toxic substances to prevent contamination and moisture, and shall be isolated from acid products.

Uses: starter for food industry, producer of carbon dioxide in soda and cold drinks, preservative for butter.

It can be used directly as raw material in the pharmaceutical industry to treat gastric acid overload. It can also be used in film production, leather tanning, mineral processing, smelting, metal heat treatment, and used in fiber, rubber industry, etc. At the same time as wool detergent, foam fire extinguishing agent, as well as for agricultural soaking seed. Food industry in one of the most widely used loose agent, used in the production of biscuits, cakes, steamed buns, bread, etc., is the soda drink carbon dioxide generation agent; It can be combined with alum to make alkaline baking powder, and can also be combined with soda ash to make civil stone alkali. It can also be used as a butter preservative. Used in the production of acid and alkali fire extinguishers and foam fire extinguishers. Rubber industry uses it with alum, H pore-making agent to play a uniform role in the production of rubber, sponge. Used in the metallurgical industry as a flux for casting steel ingot. Machinery industry used as casting steel (foundry) sand molding additives. Printing and dyeing industry used as dyeing printing fixing agent, acid and alkali buffer agent, fabric dyeing and finishing after treatment. The pharmaceutical industry is used as a raw material for making antacids. This product is a weak base and an absorbent antacid. After oral administration, can quickly neutralize gastric acid, the effect is rapid, and maintain short, and produce a variety of shortcomings such as carbon dioxide. As an antacid, it is not suitable to be used alone. It is often used together with calcium carbonate or magnesium oxide to form sibitus powder. In addition, it can alkalify urine and be taken with iodiamine to prevent sulfanilamide from crystallizing out in urine. Combined with streptomycin can enhance the antibacterial effect of urinary tract. The acidemia was corrected by intravenous administration. Give 5% drip of 100-200 ml, 5 ml per kg of child weight. Gynecology is used for fungal vaginitis, with 2%-4% solution sitz bath, once every night, 500-1000 ml each time, for 7 days. Soften your eye wax with external ear drops (3% solution, 3-4 times daily). [Dosage form, usage and dose] Tablets: 0.3g and 0.5g for each tablet. Oral administration: 0.3-1 grams each time, 3 times a day. Children, each time 0.1-1 grams, 3 times a day. Injection: 10 ml branch containing 0.5 grams of drug; A 100ml branch contains 5 grams of the drug. This product is available over-the-counter in tablets and drops only.

Fold and edit this section of regulatory information
(chemical dangerous goods safety management regulations promulgated by the State Council on February 17, 1987), the chemical dangerous goods safety management regulations, implementing rules (labor to send 677), using chemicals workplace safety regulation (labor department is sent 423) and other laws and regulations, for the safe use of hazardous chemicals, production, storage, transportation, loading and unloading, etc are made the corresponding provisions.