How much is a ton of sodium bicarbonate in Dadukou? Contact number of sodium bicarbonate manufacturers

Sodium bicarbonate is white crystal or opaque monoclinic system fine crystal, odorless, slightly salty and cool in nature, easily soluble in water and glycerin, insoluble in ethanol. The solubility in water is 7.8g (18 ℃), 16.0g (60 ℃), the density is 2.20g/cm3, the specific gravity is 2.208, and the refractive index is α: 1.465; β：1.498；γ：1.504， The standard entropy is 24.4J/(mol · K), the heat of formation is 229.3kJ/mol, the heat of solution is 4.33kJ/mol, and the specific heat capacity (Cp) is 20.89J/(mol · ° C) (22 ° C).

Sodium bicarbonate is non hazardous, but it should be protected from moisture. Store in dry and ventilated warehouse. Do not store and transport together with acids. When eating baking soda, it is particularly important not to store and transport it together with toxic substances to prevent pollution.

Pharmaceutical Analysis Editor
Method name: sodium bicarbonate - determination of sodium bicarbonate - neutralization titration
Scope of application: This method uses neutralization titration to determine the content of sodium bicarbonate (NaHCO ≮).
This method is applicable to the determination of sodium bicarbonate.
Method principle: take an appropriate amount of test sample, add water and sulfuric acid titrant (0.5mol/L), slowly boil to remove carbon dioxide, cool down, add phenolphthalein indicator solution, titrate with sodium hydroxide titrant (1mol/L), and correct the titration result with blank test. Every 1mL of sulfuric acid titrant (0.5mol/L) is equivalent to 25.43mg of Li ₂ CO ≮, which is calculated.
Reagent: 1 Water (newly boiled to room temperature)
2. Hydrochloric acid titrant (0.5mol/L)
3. Methyl red bromocresol green mixed indicator solution
4. Reference anhydrous sodium carbonate
Instrument and equipment:
Sample preparation: 1. Hydrochloric acid titrant (0.5mol/L)
Preparation: take 45mL of hydrochloric acid, add appropriate amount of water to make 1000mL, shake up, and obtain 0.5mol/L hydrochloric acid titrant.
Calibration: take about 0.8g of reference anhydrous sodium carbonate dried at 270~300 ℃ to constant weight, titrate with this solution until the solution turns from green to purple, boil for 2 minutes, cool to room temperature, and continue titrating until the solution turns from green to dark purple. Every 1mL of hydrochloric acid titrant (0.5mol/L) is equivalent to 26.50mg of anhydrous sodium carbonate. Calculate the concentration of the solution according to the consumption of the solution and the amount of anhydrous sodium carbonate.
2. Methyl red bromocresol green mixed indicator solution
Take 20mL of 0.1% methyl red ethanol solution, add 30mL of 0.2% bromocresol green ethanol solution, and shake well.
Operating steps: Take about 1g of this product, weigh it precisely, and titrate it with hydrochloric acid titrant (0.5mol/L) until the solution turns from green to purple red.
Note 1: "Precise weighing" means that the weighing shall be accurate to one thousandth of the weighing, and "Precise weighing" means that the accuracy of measuring the volume shall meet the accuracy requirements of the national standard for the volume of pipette.
Note 2: "Moisture determination" uses the drying method. Take 2-5g of the test sample and lay it in a flat weighing bottle dried to constant weight. The thickness is not more than 5mm, and the loose test sample is not more than 10mm. Weigh it precisely. Open the bottle cap and dry it at 100~105 ℃ for 5 hours. Cover the bottle cap, transfer it to a dryer, cool it for 30 minutes, weigh it precisely, dry it at the above temperature for 1 hour, cool it, weigh it, Until the difference between two successive weighing does not exceed 5mg. Calculate the water content (%) of the test article according to the weight loss