Physical Properties

  • Appearance and Form: Boric acid typically appears as a white, crystalline powder that is odorless and tasteless. It can also occur as colorless, prismatic crystals.
  • Solubility: It is soluble in water and ethanol but poorly soluble in organic solvents like ether.
  • Melting and Boiling Points: Boric acid has a relatively high melting point of approximately 170.9°C (339.6°F) and a boiling point of about 300°C (572°F).

Chemical Properties

  • Acidity: Boric acid acts as a weak acid in aqueous solutions. It dissociates to produce hydrogen ions (H+) and borate ions.
  • Reaction with Bases: Boric acid reacts with bases to form borates, illustrating its amphoteric behavior. For example, it reacts with sodium hydroxide to produce sodium borate and water.
  • Buffering Properties: Boric acid and its salts act as buffers, helping to maintain a stable pH in various solutions.

Composition of Boric Acid

Atomic Composition

Boric acid comprises three main elements: boron, oxygen, and hydrogen.

  • Boron (B): Boron is a metalloid and the central atom in the boric acid molecule. It has an atomic number of 5 and an atomic mass of approximately 10.81 g/mol.
  • Oxygen (O): Oxygen atoms, three in boric acid, surround the boron atom. Oxygen has an atomic number of 8 and an atomic mass of approximately 16.00 g/mol.
  • Hydrogen (H): Boric acid contains three hydrogen atoms, each with an atomic number of 1 and an atomic mass of approximately 1.01 g/mol.

Molecular Structure

The molecular structure of boric acid plays a crucial role in its properties and reactivity. It consists of trigonal planar boron atoms, each surrounded by three hydroxyl (OH) groups.

The chemical structure of boric acid can be represented as:
B(OH)3

In this structure, each hydrogen atom is covalently bonded to an oxygen atom, which is in turn bonded to the central boron atom. The boron atom is sp2 hybridized, resulting in a trigonal planar arrangement.

Our Boric Acid Technical Data Sheets

To find out detailed information on the Boric Acid's properties and composition, you may download our Boric Acid TDS.


Significance and Applications

Industrial Applications

  • Glass and Ceramics Industry: Boric acid is a vital component in the production of heat-resistant glass and ceramics due to its ability to enhance thermal and chemical resistance.
  • Flame Retardants: Boric acid is utilized as a flame retardant in various materials, such as textiles and plastics, to reduce their flammability and enhance safety.
  • Nuclear Industry: Boric acid is employed in the nuclear industry for its neutron-capturing properties, helping to control nuclear fission reactions in reactors.

Agricultural Applications

  • Fertilizers: Boric acid and its salts are used as micronutrients in agriculture, promoting healthy growth and development of plants.
  • Pesticides: Boric acid is a key ingredient in many insecticides and pesticides due to its ability to control and eliminate pests.

Medical and Health Uses

  • Antiseptics: Boric acid is utilized as an antiseptic to treat minor cuts, burns, and skin infections due to its mild antibacterial properties.
  • Eye Washes: Boric acid is a component in eye drops and solutions used to cleanse and soothe irritated eyes.

You can find boric acid in:

  • Antiseptics and astringents
  • Enamels and glazes
  • Glass fiber manufacturing
  • Medicated powders
  • Skin lotions
  • Some paints
  • Some rodent and ant pesticides
  • Photography chemicals
  • Powders to kill roaches
  • Some eyewash products

BENEFITS OF BORIC ACID

1. Yeast Infections

Boric acid is being recommended as a natural treatment for vaginal yeast infections, including Candida and other infections that cannot be cured by antifungal medicines. It can be used in suppository form before bed for one to two weeks, with a 70% clinical and mycologic eradication rate.

2. Roach Killer

Cockroaches pose health risks to humans due to their unsightly appearance and potential transmission of germs through decaying matter. They also contribute to asthma and allergy attacks due to their droppings, saliva, and skin sheddings. Boric acid is an effective solution for cockroach control, as it adheres to roaches and ingests the powder. It is also used to kill other parasites like ants, fleas, termites, silverfish, beetles, and wood borers.

3. Eyewash

Boric acid, when diluted with water, can be used as an effective eyewash for minor irritations and contagious infections. It treats bacterial infections and soothes inflamed eyes, including relief of pink eye symptoms. Homemade boric acid eyewash can be easily made.

4. Acne

Boric acid, a natural antibacterial, is advised for use in home acne treatments and topical solutions.  However, it can irritate the skin and is banned in many countries.  It received a dismal 7 out of 10 rating from the Environmental Working Group.

5. Athlete’s Foot

Boric acid is also effective in treating fungal infections including athlete's foot and toenail fungus.  A few sprinkles of boric acid powder in your socks or stockings will help cure up minor infections and relieve the itching associated with athlete's foot.  As an extra benefit, it can reduce athlete's foot odor, offering relief for stinking feet.

 Why is boric acid beneficial for curing athlete's foot?  The acid lowers your skin's pH and aids in the removal of dead skin cells, which feed the fungus.  Boric acid is a highly effective fungicide that may frequently cure athlete's foot when other antifungal lotions have failed.


6. Household Cleaner

Boric acid can be used in the home as a cleaner, deodorizer, stain remover, disinfectant, and mold killer.  Boric acid may be added to your next load of laundry to increase its stain-fighting potency.  You can also use it to clean the toilet bowl with very little effort - simply insert it and wait 30 minutes.

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