sodium bicarbonate NEW

Chinese name: Sodium bicarbonate

English name: Sodium bicarbonate

CAS: 144-55-8

EINECS number: 205-633-8

Molecular formula: CHNaO3

MDL number: MFCD00003528

Molecular weight: 84.01

Appearance: white, salty, powder or crystal.

Appearance: white powder or opaque monoclinic crystal system fine crystal. Odorless, salty. It is less soluble in water than sodium carbonate. Solids begin to decompose gradually into sodium carbonate, carbon dioxide and water above 50 ° C, and decompose completely at 270 ° C. Sodium bicarbonate is an acid salt formed after the neutralization of a strong base and a weak acid, and is weakly alkaline when dissolved in water. This property is often used as a leavening agent in food preparation. Sodium bicarbonate will remain sodium carbonate after the action, and too much use will give the finished product an alkali taste.

Solubility: soluble in water, insoluble in ethanol, etc.

Melting point: >300 °C(lit.)

Boiling point: 851°C

Density: 2.16 g/mL at 25 °C(lit.)

Refractive index: 1.500

Storage conditions: 2-8°C

Solubility: H2O: 1 M at 20 °C, clear, colorless

Form: solution (7.5%)

Specific gravity: 2.159

Color: White

PH: 8.3 (0.1molfreshly prepared)

Odor: Odorless

Acidity coefficient (pKa) : (1) 6.37, (2) 10.25 (carbonic (at 25℃)

ph range of acid-base indicator discoloration: 7.8-8.2

Water solubility: 9 g/100 mL (20 ºC)

Decomposition: 50 °C

Merck: 14,8583

BRN: 4153970

BCS: Class1

Stability: Stable.

LogP: -4.010 (est)

use

Used in food, medicine, film production, tanning, mineral processing, metallurgy, fiber, rubber and other industries, can also be used as detergent, fire extinguishing agent, used as a starter in food industry, soda and cold drinks in carbon dioxide generation agent