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Sodium Hydroxide Pellet
Sodium Hydroxide is a strong base laboratory reagent. We are keeping ready stock of LR Grade of Sodium Hydroxide to use as Laboratory reagent.
Sodium Hydroxide solutions tend to absorb Carbon Dioxide and other acidic gases from the air and care should be exercised to minimize this occurrence.
Applications: Pharmaceutical Aid (Alkalizer), Food Additive, Laboratory regent, Etching and Electroplating, peeling of fruits and vegetables in food Industries, Organic fusion’s vegetable oil refining reclaiming Rubber, Resins, Chemical Manufacturing of various salts and to maintain pH. NaOH solution is used to neutralize acid and also for making sodium salt, and for petroleum refining to remove sulfuric acid and other organic acids.
Sodium Hydroxide is a strong base in terms of chemical ionization and solutions of it can be assayed using a strong acid, such as Hydrochloric Acid or Sulfuric Acid, or by using an acidimetric standard such as Potassium Hydrogen Phthalate (KHP).
Typical neutralization reactions are:
The endpoint can be determined potentiometrically or by using one of a number of pH indicators with a color change anywhere in the pH 3 - 10.5 range.
The selection of the indicator used depends on the initial concentration of the Sodium Hydroxide and the strength of the acid used. This is due to the fact that the Normalities of the acid and the base affect the shape of the neutralization curve that results during the titration. When both acid and base are 1 Normal in concentration, indicators with effective ranges between pH 3 and 10.5 can be used. Suitable indicators include Methyl Orange, Bromocresol Green, Methyl Red, Methyl Purple, Bromothymol Blue, Phenol Red, Phenolphthalein and Thymolphthalein. When both the acid and base are 0.1 Normal, the ideal pH range is reduced to 4.5 to 9.5. Thus, Methyl Orange and Thymolphthalein are not as suitable as the others. With 0.01 Normal solutions, the ideal pH range is further limited to 5.5 - 8.5.
SPECIFICATION
SODIUM HYDROXIDE PELLETS (Lab GRADE)
CAUSTIC SODA PELLETS
CAS NO: 1310-73-2
NaOH: MW: 40.00
| TEST | SPECIFICATION |
| Description | White, hygroscopic pellets |
| Identify |
Na: Passes test OH: Passes test |
| Test solution (10% w/v; water) | The solution is clear and colourless |
| Solubility | Soluble in 1 to 10 parts of water and in alcohol |
| Assay (NaOH) | NLT 97.0 % |
| Carbonate (as Na2CO3) | NMT 2 % |
| Chloride (CI) | NMT 125 ppm |
| Sulfate (SO4) | NMT 75 ppm |
| Arsenic (As) | NMT 4 ppm |
| Iron (Fe) | NMT 20 ppm |
| Potassium (K) | Passes Test |
Sodium Hydroxide is Extremely corrosive product. Potential symptoms of over-exposure are irritation of eyes, skin and mucous membranes, pneumonitis, eye and skin burns, temporary lose of hair etc.