sodium bicarbonate
Structural formula
| Business number | 03WH |
|---|---|
| Molecular formula | NaHCO3 |
| Molecular weight | 84.01 |
| label |
baking soda, Chong Cao, sodium bicarbonate, baking soda, sodium acid carbonate, Sodium acid carbonate, Baking soda, Sodium bicarbonate, Reagents for genetic engineering research, leavening agent, acidity regulator, foaming agent, Agricultural seed soaking agent |
Numbering system
CAS number:144-55-8
MDL number:MFCD00003528
EINECS number:205-633-8
RTECS number:VZ0950000
BRN number:4153970
PubChem number:24899673
Physical property data
1. Physical property data
1. Properties: white powder or opaque monoclinic fine crystals. Odorless, non-toxic, salty taste.
2. Density (g/mL, 25/4℃): 2.20
3. Relative vapor density (g/mL, air=1): Uncertain
4. Melting point (ºC): 270
5. Boiling point (ºC, normal pressure): Uncertain
6. Boiling point (ºC, 5.2kPa): Uncertain
7. Refractive index: Uncertain
8. Flash point (ºC): Uncertain
9. Specific rotation (ºC): Uncertain
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10. Autoignition point or ignition temperature (ºC) is uncertain
11. Vapor pressure (kPa, 25ºC): Uncertain
12. Saturated vapor pressure ( kPa, 60ºC): Uncertain
13. Heat of combustion (KJ/mol): Uncertain
14. Critical temperature (ºC): Uncertain
15. Critical pressure (KPa): Uncertain
16. Log value of oil-water (octanol/water) partition coefficient: Uncertain
17. Explosion upper limit (%, V/ V): Uncertain
18. Lower explosion limit (%, V/V): Uncertain
19. Solubility: soluble in water, slightly soluble in ethanol. Its aqueous solution becomes slightly alkaline due to hydrolysis. 20. Decomposition temperature (ºC): 100~14021. Gas generation volume: 267L/kg
Toxicological data
2. Toxicology data:
1. Acute toxicity: Rat oral LD50: 4220 mg/kg; Mouse oral LD50: 3360 mg/kg.
2. Reproductive toxicity: Rat abdominal TDLo: 40 mg/kg
4. Alkaline agent: leavening agent. It is often formulated with ammonium bicarbonate as a leavening agent for biscuits and pastries. The addition amount in wheat flour is 20g./kg. It can be used with citric acid, tartaric acid, etc. to prepare a foaming agent for solid refreshing beverages (generating CO2). Because it is a harmless weak alkaline agent, adding about 0.1% to 0.2% when washing vegetables can stabilize the green color. When used alone, it becomes strongly alkaline due to decomposition by heat. When used in bread, it will turn yellow and destroy the vitamins in wheat. It is best to use it in combination with acidic substances such as calcium hydrogen phosphate. It can also be used for blanching food and removing astringency. Because it can increase the pH value, it can improve the water holding capacity of protein, promote the softening of food tissue cells, and promote the dissolution of astringent components. It has a mutton-removing effect on goat milk (dosage 10-20mg/kg).
5. Used as acidity regulator and chemical leavening agent. Our country stipulates that it can be used in various foods that require the addition of leavening agents, and should be used in appropriate amounts according to production needs.
6. Injectable carbon-base balance medicine. It is used in food, medicine, film, tanning, mineral processing, metallurgy, fiber, rubber and other industries. It can also be used as detergent and fire extinguishing agent. 7. This product is used as a foaming agent for rubber and plastic phenolic resins, and as an assistant foaming agent for polyvinyl chloride and polystyrene. In the food industry, it is used as a starter culture, a carbon dioxide generator in soft drinks and cold drinks, and a preservative for butter. This product can be directly used as raw material in the pharmaceutical industry as well as wool detergent and foam fire extinguishing agent. It can also be used in film production, tanning, mineral processing, metallurgy, metal heat treatment and agricultural seed soaking agents.
8. It has the functions of dissolving mucus, strengthening the stomach, suppressing acidity and increasing appetite. Absorbed into the body of livestock and poultry, it can supplement the sodium needed by the body and is beneficial to the health of livestock and poultry. Sodium bicarbonate is added as an additive to the feed of livestock and poultry, which can improve feed utilization and energy conversion rate, promote the growth of livestock and poultry, and increase the production of meat, eggs, and milk. Adding 0.1% to 0.5% sodium bicarbonate to chicken feed can effectively reduce heat stress. However, sodium bicarbonate can be incompatible with a variety of anti-heat stress feed additives (such as citric acid, ammonium chloride, aspirin, etc.), causing itself, the other party, or both parties to lose the anti-heat stress effect. Therefore, when using sodium bicarbonate in summer, it should be carefully combined with other anti-heat stress feed additives. Adding sodium bicarbonate to pig feed can increase feed utilization by 8% to 10%, and can also make up for the lack of lysine content in the feed. Dissolving sodium bicarbonate in a small amount of water or mixing it into concentrate and feeding it to cattle (adding it in appropriate amounts) can promote the growth of cattle and significantly increase the milk production of dairy cows. Sodium bicarbonate can be used to prevent and treat metabolic acidosis. It also has the functions of neutralizing gastric acid, strengthening the stomach, and nourishing the stomach. Acidosis can be relieved by intravenous injection of 5% sodium bicarbonate injection. Sodium bicarbonate can also be used to treat visceral diseases in chickens. 9.Used as alkaline agent and leavening agent. It is often formulated with ammonium bicarbonate as a leavening agent for biscuits and pastries.
The added amount in wheat flour is 20mg/kg. It can be formulated with citric acid, tartaric acid, etc. as a foaming agent (to produce CO2). Because it is a harmless weak alkaline agent, adding about 0.1% to 0.2% when washing vegetables can stabilize the green color. When used alone, it becomes strongly alkaline due to decomposition by heat. When used in bread, it will turn yellow and destroy the vitamins in wheat. It is best to use it in combination with acidic substances such as calcium hydrogen phosphate. It can also be used for blanching food and removing astringency. Because it can increase the pH value, it can improve the water-holding capacity of protein, promote the softening of food tissue cells, and promote the dissolution of astringent components. It has a mutton-removing effect on goat milk (dosage 10~20mg/kg). 10.The main raw material of industrial alkaline detergents, it is also used as a washing aid, wool detergent, bath agent, etc.
