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Sodium bicarbonate

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Sodium bicarbonate

EINECS 205-633-8
CAS No. 144-55-8 Density 2.173 g/cm3
Solubility in water: 69 g/L (0 °C), 96 g/l (20 °C), 165 g/l (60 °C), 236 g/L (100 °C) Melting Point 50 °C, 323 K, 122 °F (decomposes)
Formula NaHCO3 Boiling Point 333.6 °C at 760 mmHg
Molecular Weight 84.01 Flash Point 169.8 °C
Transport Information Appearance white powder or crystals
Safety 24/25 Risk Codes
Molecular Structure Molecular Structure of 144-55-8 (Sodium bicarbonate) Hazard Symbols

Carbonic acid, monosodium salt;Natriumhydrogenkarbonat;Meylon;Carbonic acid disodium salt;SodaSee;Monosodium hydrogen carbonate;Monosodium carbonate;monosodium salt ;; see the subdivided heading;Component of Col-Evac;Soda Mint;Sodium bicarbonate(1:1);Carbonic acid, disodium salt;Natriumbicarbonat, Natriumhydrogencarbonat;Sodium Bicarbonate food grade;


Sodium bicarbonate Specification

Sodium bicarbonate, with the formula NaHCO3, has the IUPAC name of Sodium hydrogen carbonate. It is a white solid that is crystalline but often appears as a fine powder. It will melt at 50 °C which is soluble in water. It is stable at normal pressure and temperature. The substance should be stored at cool, dry, well-ventilated place. In addition, it should be protected from strong oxides and acids. Sodium bicarbonate is amphoteric which can react with acids and bases. With the CAS register number of 144-55-8, the substance also has the EINECS registry number 205-633-8. Sodium bicarbonate is a component of the mineral natron and is found dissolved in many mineral springs. The substance is an amphoteric compound. Aqueous solutions are mildly alkaline due to the formation of carbonic acid and hydroxide ion. Sodium bicarbonate reacts with bases such as sodium hydroxide to form carbonates. Sodium bicarbonate and an acid can react to give a salt and carbonic acid which readily decomposes to give carbon dioxide and water. Sodium bicarbonate will gradually decompose into sodium carbonate and carbon dioxide above 70 °C. The conversion is more fast at 200 °C.When you are using this chemical, please be cautious about it as the following:  please avoid contact with skin and eyes.

Physical properties about Sodium bicarbonate are:
 (1)ACD/LogP: -0.809; (2)ACD/LogD (pH 5.5): -1.98; (3)ACD/LogD (pH 7.4): -3.77; (4)ACD/BCF (pH 5.5): 1.00; (5)ACD/BCF (pH 7.4): 1.00; (6)ACD/KOC (pH 5.5): 1.00; (7)ACD/KOC (pH 7.4): 1.00; (8)#H bond acceptors: 3 ; (9)#H bond donors: 2 ; (10)Polar Surface Area: 46.53 ?2 ; (11)Polarizability: 10-24cm3; (12)Flash Point: 169.8 °C; (13)Enthalpy of Vaporization: 63.37 kJ/mol; (14)Boiling Point: 333.6 °C at 760 mmHg; (15)Vapour Pressure: 2.58E-05 mmHg at 25°C

Preparation of Sodium bicarbonate:
Sodium bicarbonate is mainly prepared by the Solvay process, which is the reaction of calcium carbonate, sodium chloride, ammonia, and carbon dioxide in water. It may be obtained by the reaction of carbon dioxide with an aqueous solution of sodium hydroxide. The initial reaction produces sodium carbonate. Further addition of carbon dioxide produces sodium bicarbonate.
CO2 + 2 NaOH → Na2CO3 + H2O
Na2CO3 + CO2 + H2O → 2 NaHCO3

Uses of Sodium bicarbonate:
 The Sodium bicarbonate was used as a cleansing agent like soap. Sodium bicarbonate was sometimes used in cooking vegetables, to make them softer. As a leavening agent, Sodium bicarbonate is primarily used in cooking. Sodium bicarbonate can be used as a wash to remove any acidic impurities from a "crude" liquid, producing a purer sample. Sodium bicarbonate can be added as a simple solution for raising the pH balance of water. Sodium bicarbonate is used in an aqueous solution as an antacid. Sodium bicarbonate is sold as a cattle feed supplement, in particular as a buffering agent for the rumen. It may also be used in an oral form to treat chronic forms of metabolic acidosis such as chronic renal failure and renal tubular acidosis. Sodium bicarbonate may also be used in urinary alkalinization for the treatment of aspirin overdose and uric acid renal stones. It is used as the medicinal ingredient in gripe water for infants. It is used as well for treatment of hyperkalemia. Sodium bicarbonate can be used as an exfoliant. Small amounts of Sodium bicarbonate have been shown to be useful as a supplement for endurance athletes. Sodium bicarbonate can be used to extinguish small grease or electrical fires by being thrown over the fire. However, as it may cause the grease to splatter, it should not be applied to fires in deep fryers.

You can still convert the following datas into molecular structure:

(1)Canonical SMILES: C(=O)(O)[O-].[Na+]
(2)InChI: InChI=1S/CH2O3.Na/c2-1(3)4;/h(H2,2,3,4);/q;+1/p-1

The toxicity data of Sodium bicarbonate is as follows:

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
infant TDLo oral 1260mg/kg (1260mg/kg) LUNGS, THORAX, OR RESPIRATION: OTHER CHANGES

American Journal of Diseases of Children. Vol. 135, Pg. 965, 1981.
man TDLo oral 20mg/kg/5D-I (20mg/kg) GASTROINTESTINAL: NAUSEA OR VOMITING American Journal of Emergency Medicine. Vol. 12, Pg. 57, 1994.
mouse LD50 oral 3360mg/kg (3360mg/kg)   Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene and Occupational Diseases. Vol. 33(5), Pg. 30, 1989.
rat LC inhalation > 900mg/m3 (900mg/m3)   Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene and Occupational Diseases. Vol. 33(5), Pg. 30, 1989.
rat LD50 oral 4220mg/kg (4220mg/kg)   Toxicology and Applied Pharmacology. Vol. 6, Pg. 726, 1964.

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