Pure sodium hydroxide is a colorless, crystalline solid which
melts at 318 ° C without degradation. Highly soluble in water,
present with a lower solubility in ethanol and methanol, but
insoluble in ether and other non-polar solvents.
Similar to the hydration of sulfuric acid, the dissolution of
solid sodium hydroxide into water is an extremely exothermic
reaction in which large amounts of heat are released [12], posing
a threat to safety due to the possibility of splashing. The
resulting solution is generally colorless and odorless. As with
other alkaline solutions, it becomes slippery in contact with
skin.
Sodium hydroxide is also known as algae and caustic soda. Sodium
hydroxide is a highly caustic base and alkali, which can break
down proteins at ordinary ambient temperatures and cause severe
chemical burns.
Sodium hydroxide reacts with protic acids to produce water and
related salts. For example, when sodium hydroxide reacts with
hydrochloric acid, sodium chloride is formed:
NaOH (aqueous) + HCl (aqueous) → NaCl (aq) + H 2 O (1)
In general, such neutralization reactions are represented by a
simple net ionic equation:
OH – (aq) + H + (aqueous) → H2O (I)
This type of reaction with a strong acid emits heat and is
therefore exothermic. These acid-based reactions can also be used
for titrations. However, sodium hydroxide is not used as the
primary standard because it is hygroscopic and absorbs carbon
dioxide in the air.
Acid control, treatment of bad odor, cleaning pipes, pH
balancing)
Adhesive, heat press printing, newsprint)
Sodium Aluminate, Sodium Cyanide, Silicate, Polycarbonate,
Titanium Oxide, Zeolite production
In the latest product to remove residues, bleaching
STTP, Sodium Hypochlorite, Soap, Oven and Pipe Cleaner)
Sodium Phenolate [aspirin and antiseptic]
Edible oil refining, fruit and vegetable peeling, ice
cream
Oil cleaning, water treatment, equipment cleaning
Starch, Caustic, Water, Silicate: Together in Label Adhesive
Manufacturing
Starch, Caustic, Water, Borax: In Corrugated Board Glue
Manufacturing
To remove acid residues in refined products, to remove phenols,
to stabilize pH in drilling mud, to remove calcium and
bactericides in drilling
Filter Cleaner (in filter pools) and cleaning of acid unit in
mines,
In addition, Caustic (Sodium Hydroxide) or Lime (Calcium
Hydroxide) is used to adjust the pH of Sodium Cyanide used.