Sodium Bicarbonate CAS no 144-55-8 basic information

Chinese name

Sodium bicarbonate

Foreign name

Sodium Bicarbonate

nickname

Baking Soda, sodium bicarbonate, sodium acid carbonate, bicarbonate, Baking Soda

Chemical formula

NaHCO?

Molecular weight

84.01

CAS login number

144-55-8

EINECS Login number

205-633-8

Melting point

270℃ (decomposition)

Water solubility

7.8g/100ml at 18℃

density

2.159 g/c ? (solid)

appearance

White powder or monoclinic crystalline powder

generic

Chemical reagent

virulence

non-toxic

Sodium bicarbonate (chemical formula: NaHCO?), commonly known as baking soda, soda powder, baking powder (Hong Kong, Taiwan), casserole, etc., very white crystals in ?, less than the solubility of soda in water.

Sodium bicarbonate, a white alkaline powder that is easily soluble in water, begins to act when combined with water to release carbon dioxide, CO2, which reacts faster in acidic liquids such as fruit juices, and gas release faster as ambient temperature rises.

Sodium bicarbonate will leave sodium carbonate after action, and excessive use will give the finished product an alkali taste.

Sodium bicarbonate aqueous solution is weakly alkaline, commonly known as baking soda and alkali.

Eat baking soda NaHCO?

Properties: White powder or monoclinic crystalline powder, odorless, salty, easy to dissolve in water, but less than sodium carbonate in water solubility, insoluble in ethanol, water solution is slightly alkaline. Decompose easily when exposed to heat. Decompose slowly in moist air.

Carbon dioxide begins to be lost at about 50 ° C and all becomes sodium carbonate at 100 ° C. It rapidly decomposes in weak acids, and its aqueous solution begins to disassemble carbon dioxide and sodium carbonate at 20℃, all at boiling point. Soluble in 10 parts water at 25℃, soluble in 12 parts water at about 18℃, insoluble in ethanol. The unagitated solution made of cold water showed only slightly alkaline reaction to phenolphthalein paper. When placed or raised at temperature, its alkalicity increased. The pH value of 0.1mol/L aqueous solution prepared fresh at 25℃ was 8.3. Low toxicity, median lethal dose (rat, oral)4420mg/kg.

Sodium bicarbonate can be directly used as a raw material in the pharmaceutical industry to treat excess stomach acid. It can also be used in film production, tanning, beneficiation, smelting, metal heat treatment, and used in fiber, rubber industry, etc. At the same time used as wool detergent, as well as for agricultural soaking seed. One of the most widely used loosening agents in the food industry, used in the production of biscuits, pastries, steamed buns, bread, etc., is the producer of carbon dioxide in soda drinks; It can be combined with alum to form alkaline baking powder, and can also be combined with soda ash to form civil stone base. It can also be used as a butter preservative. Fire fighting equipment for the production of acid and alkali fire extinguisher and foam fire extinguisher. Rubber industry uses it with alum, H pore-hair agent to play a uniform pore-hair role for rubber, sponge production. Used in metallurgy as a flux for casting steel ingot. Mechanical industry used as casting steel (foundry) sand molding aid. Printing and dyeing industry used for dyeing printing fixing agent, acid and alkali buffer, fabric dyeing and finishing of the rear treatment agent. Baking soda is added to dyeing to prevent flaring. The pharmaceutical industry uses it as a raw material for making acid. [2]

Used as an analytical reagent, inorganic synthesis, pharmaceutical industry, treatment of acidemia and food industry starter culture, soda and cold drinks carbon dioxide producer, butter preservative. It can be directly used as raw material in pharmaceutical industry, detergent for wool, foam extinguishing agent, bath agent, alkaline agent and leavening agent. It is often used in biscuits and pastries with ammonium bicarbonate as leavening agent. In wheat flour added amount of 20g./kg. To twist Meng acid, tartaric acid preparation solid cool and refreshing drinks such as foaming agent (CO2 emissions). Because it is harmless weak alkaline agent, about 0.1% ~ 0.2% can be added when washing vegetables to make the green stability. Single use, due to heat decomposition is strong alkaline, used in bread will be yellow, and destroy the vitamin in wheat, the best with calcium hydrogen phosphate and other acidic substances. Can also be used for food blanching, to astringent taste. Because it can increase the pH value, it can improve the water holding capacity of proteins, promote the softening of food tissue cells, and promote the dissolution of astringent ingredients. Goat milk has the removal of mutton (dosage 10 ~ 20mg/kg). As the acidity regulator and chemical leavening agent, our country regulates can be used for all kinds of foods which need to add leavening agent, AND NEEDS APPROPRIATE USE according to the production. [1]

Folding medical use

Bicarbonate of soda NatriiBicarbonas

The NaHCO?

[Properties] white crystalline powder; Odorless, salty; In the humid air is slowly decomposed, water solution placed a little longer, or shaking, or heating, alkaline is increased. Soluble in water, insoluble in ethanol.

[Action] As a weak base, this product can quickly neutralize gastric acid after internal administration, and its antacid effect is weak and short. In addition, there is the effect of alkalization liquid.

It is suitable for excessive stomach acid, dyspepsia and alkalinized urine. Intravenous administration for acidosis; External ear drops soften umen; 2% solution sitting bath for mycotic vaginitis.

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

[Precautions]① May produce perforation canker patients should not use; Avoid mixing with acid drugs. ② When taken internally, a large amount of carbon dioxide gas is produced, which increases the pressure in the stomach, stimulates the ulcer surface in patients with gastric ulcer, and even has the risk of gastric perforation. At the same time, carbon dioxide stimulates the gastric mucosa, causing secondary excessive secretion of gastric acid. Excessive dosage can cause alkalosis.

Store in an airtight, dry place. Shelf life of one year

Tablets: 0.3g, 0.5g per tablet.

Compound sodium bicarbonate tablets TabellaeNatriiBicar - bonatisCompositae(soda amine tablets, soda mint tablets) : Each piece contains sodium bicarbonate 0.25-0.35g, peppermint oil, a little sugar. Have stomach-strengthening, antacid effect, 1-4 tablets each time, 3 times a day, before meals.

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

Sibi's Tablets Tabellaesippyi: I: Each tablet contains sodium bicarbonate and magnesium oxide 0.3g each. R: Each tablet contains sodium bicarbonate and calcium carbonate 0.3g each. For excessive gastric acid and duodenal ulcer, E is constipative. Take them alternately, depending on the patient's diarrhea or constipation. Oral: 2-4 tablets each time, 3-4 times a day, before meals.

Sodium bicarbonate has weak alkalinity and is absorbent antacid. After internal administration, it can quickly neutralize stomach acid, act quickly, and maintain short time, and has a variety of shortcomings such as carbon dioxide production. As antacids should not be used alone, often with calcium carbonate or magnesium oxide together to form Sibi's powder. In addition, this product can alkalize urine, taken with iodide, to prevent sulfanilamide crystallization in urine; Combined with streptomycin can enhance the antibacterial action of urinary tract. Intravenous administration corrected acidemia. Use 5%100-200 ml drops, 5 ml per kilogram of body weight for children. Gynecology for mycotic vaginitis, with 2%-4% solution sitting bath, once a night, each time 500-1000 ml, for 7 days. External ear drops soften umen (3% solution drops, 3-4 times daily). Injection: 10 ml sticks containing 0.5 g; 100ml sticks contain 5 grams of medicine. This drug is available over the counter as tablets and drops only.