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EC / List no.: 233-139-2 / 234-343-4
CAS no.: 10043-35-3 / 11113-50-1
Mol. formula: BH3O3
Boric acid, more specifically orthoboric acid, is a compound of boron, oxygen, and hydrogen with formula BO3H3 or B(OH)3.
Boric acid may also be called hydrogen borate or boracic acid.
Boric acid is usually encountered as colorless crystals or a white powder, that dissolves in water, and occurs in nature as the mineral sassolite.
Boric acid is a weak acid that yields various borate anions and salts, and can react with alcohols to form borate esters.
Boric acid is often used as an antiseptic, insecticide, flame retardant, neutron absorber, or precursor to other boron compounds.
The term "boric acid" is also used generically for any oxoacid of boron, such as metaboric acid HBO2 and tetraboric acid H2B4O7.
History
Orthoboric acid was first prepared by Wilhelm Homberg (1652–1715) from borax, by the action of mineral acids, and was given the name sal sedativum Hombergi ("sedative salt of Homberg").
However boric acid and borates have been used since the time of the ancient Greeks for cleaning, preserving food, and other activities.
Molecular and crystal structure
The three oxygen atoms form a trigonal planar geometry around the boron.
The B-O bond length is 136 pm and the O-H is 97 pm.
The molecular point group is C3h.
Two crystalline forms of orthoboric acid are known: triclinic and hexagonal.
The former is the most common; the second, which is a bit more stable thermodynamically, can be obtained with a special preparation method.
Triclinic
The triclinic form of boric acid consists of layers of B(OH)3 molecules held together by hydrogen bonds of length 272 pm.
The distance between two adjacent layers is 318 pm.
Preparation
Boric acid may be prepared by reacting borax (sodium tetraborate decahydrate) with a mineral acid, such as hydrochloric acid.
Reactions
Pyrolysis
When heated, orthoboric acid undergoes a three step dehydration.
The reported transition temperatures vary substantially from source to source.
When heated above 140 °C, orthoboric acid yields metaboric acid (HBO2) with loss of one water molecule:
B(OH)3 → HBO2 + H2O
Heating metaboric acid above about 180 °C eliminates another water molecule forming tetraboric acid, also called pyroboric acid (H2B4O7):
4 HBO2 → H2B4O7 + H2O
Further heating (to about 530 °C) leads to boron trioxide:
H2B4O7 → 2 B2O3 + H2O
Aqueous solution
When orthoboric acid is dissolved in water, it partially dissociates to give metaboric acid:
B(OH)3 ⇌ HBO2 + H2O
The solutions is mildly mildly acidic due to ionization of the acids:
B(OH)3 + H2O ⇌ [BO(OH)2]− + H3O+
HBO2 + H2O ⇌ [BO2]− + H3O+
However, Raman spectroscopy of strongly alkaline solutions has shown the presence of [B(OH)4]− ion, leading some to conclude that the acidity is exclusively due to the abstraction of OH− from water:
B(OH)3 + HO− ⇌ B(OH)−4
Equivalently,
B(OH)3 + H2O ⇌ B(OH)−4 + H+ (K = 7.3×10−10; pK = 9.14)
Or, more properly,
B(OH)3 + 2 H2O ⇌ B(OH)−4 + H3O+
This reaction occurs in two steps, with the neutral complex aquatrihydroxyboron B(OH)3(OH2) as an intermediate:
B(OH)3 + H2O → B(OH)3(OH2)
B(OH)3(OH2) + H2O + HO− → [B(OH)4]− + H3O+
This reaction may be characterized as Lewis acidity of boron toward [HO]−, rather than as Brønsted acidity.
However, some of its behaviour towards some chemical reactions suggest it to be tribasic acid in the Brønsted sense as well.
Boric acid, mixed with borax Na2B4O7·10H2O (more properly Na2B4O5(OH)4·8H2O) in the weight ratio of 4:5, is highly soluble in water, though they are not so soluble separately.
Sulfuric acid solution
Boric acid also dissolves in anhydrous sulfuric acid according to the equation
B(OH)3 + 6 H2SO4 → [B(SO4H)4]− + 2 [HSO4]− + 3 H3O+
Esterification
Boric acid reacts with alcohols to form borate esters, B(OR)3 where R is alkyl or aryl.
The reaction is typically driven by a dehydrating agent, such as concentrated sulfuric acid:
B(OH)3 + 3 ROH → B(OR)3 + 3 H2O
With vicinal diols
The acidity of boric acid solutions is greatly increased in the presence of cis-vicinal diols (organic compounds containing similarly oriented hydroxyl groups in adjacent carbon atoms, (R1,R2)=C(OH)−C(OH)=(R3,R4)) such as glycerol and mannitol.
The tetrahydroxyborate anion formed in the dissolution pontaneously reacts with these diols to form relatively stable anion esters containing one or two five-member −B−O−C−C−O− rings.
The stability of these mannitoborate ester anions shifts the equilibrium of the right and thus increases the acidity of the solution by 5 orders of magnitude compared to that of pure boric oxide, lowering the pKa from 9 to below 4 for sufficient concentration of mannitol.
The resulting solution has been called mannitoboric acid.
The addition of mannitol to an initially neutral solution containing boric acid or simple borates lowers its pH enough for it to be titrated by a strong base as NaOH, including with an automated a potentiometric titrator.
This property is used in analytical chemistry to determine the borate content of aqueous solutions, for example to monitor the depletion of boric acid by neutrons in the water of the primary circuit of light-water reactor when the compound is added as a neutron poison during refueling operations
Uses:
Industrial
The primary industrial use of boric acid is in the manufacture of monofilament fiberglass usually referred to as textile fiberglass. Textile fiberglass is used to reinforce plastics in applications that range from boats, to industrial piping to computer circuit boards.
In the jewelry industry, boric acid is often used in combination with denatured alcohol to reduce surface oxidation and firescale from forming on metals during annealing and soldering operations.
Boric acid is used in the production of the glass in LCD flat panel displays.
In electroplating, boric acid is used as part of some proprietary formulas.
One such known formula calls for about a 1 to 10 ratio of H3BO3 to NiSO4, a very small portion of sodium lauryl sulfate and a small portion of H2SO4.
The solution of orthoboric acid and borax in 4:5 ratio is used as a fire retarding agent of wood by impregnation.
Boric acid is also used in the manufacturing of ramming mass, a fine silica-containing powder used for producing induction furnace linings and ceramics.
Boric acid is added to borax for use as welding flux by blacksmiths.
Boric acid, in combination with polyvinyl alcohol (PVA) or silicone oil, is used to manufacture Silly Putty.
Boric acid is also present in the list of chemical additives used for hydraulic fracturing (fracking) in the Marcellus Shale in Pennsylvania.
Indeed, it is often used in conjonction with guar gum as cross-linking and gelling agent for controlling the viscosity and the rheology of the fracking fluid injected at high pressure in the well.
Indeed, it is important to control the fluid viscosity for keeping in suspension on long transport distances the grains of the propping agents aimed at maintaining the cracks in the shales sufficiently open to facilitate the gas extraction after the hydraulic pressure is relieved.
The rheological properties of borate cross-linked guar gum hydrogel mainly depend on the pH value.
Medical
Boric acid can be used as an antiseptic for minor burns or cuts and is sometimes used in salves and dressings, such as boracic lint.
Boric acid is applied in a very dilute solution as an eye wash.
Dilute boric acid can be used as a vaginal douche to treat bacterial vaginosis due to excessive alkalinity, as well as candidiasis due to non-albicans candida.
Boric acid largely spares lactobacilli within the vagina.
As TOL-463, it is under development as an intravaginal medication for the treatment of bacterial vaginosis and vulvovaginal candidiasis.
As an antibacterial compound, boric acid can also be used as an acne treatment.
Boric acid is also used as prevention of athlete's foot, by inserting powder in the socks or stockings.
Various preparations can be used to treat some kinds of otitis externa (ear infection) in both humans and animals.
The preservative in urine sample bottles in the UK is boric acid.
Boric acid solutions used as an eye wash or on abraded skin are known to be toxic, particularly to infants, especially after repeated use; this is because of its slow elimination rate.
Boric acid is one of the most commonly used substances that can counteract the harmful effects of reactive hydrofluoric acid (HF) after an accidental contact with the skin.
Boric acid works by forcing the free F− anions into the inert tetrafluoroborate anion.
This process defeats the extreme toxicity of hydrofluoric acid, particularly its ability to sequester ionic calcium from blood serum which can lead to cardiac arrest and bone decomposition; such an event can occur from just minor skin contact with HF.
Insecticidal
Boric acid was first registered in the US as an insecticide in 1948 for control of cockroaches, termites, fire ants, fleas, silverfish, and many other insects.
The product is generally considered to be safe to use in household kitchens to control cockroaches and ants.
Boric acid acts as a stomach poison affecting the insects' metabolism, and the dry powder is abrasive to the insects' exoskeletons.
Boric acid also has the reputation as "the gift that keeps on killing" in that cockroaches that cross over lightly dusted areas do not die immediately, but that the effect is like shards of glass cutting them apart.
This often allows a roach to go back to the nest where it soon dies.
Cockroaches, being cannibalistic, eat others killed by contact or consumption of boric acid, consuming the powder trapped in the dead roach and killing them, too.
Preservation
In combination with its use as an insecticide, boric acid also prevents and destroys existing wet and dry rot in timbers.
Boric acid can be used in combination with an ethylene glycol carrier to treat external wood against fungal and insect attack.
Boric acid is possible to buy borate-impregnated rods for insertion into wood via drill holes where dampness and moisture is known to collect and sit.
Boric acid is available in a gel form and injectable paste form for treating rot affected wood without the need to replace the timber.
Concentrates of borate-based treatments can be used to prevent slime, mycelium, and algae growth, even in marine environments.
Boric acid is added to salt in the curing of cattle hides, calfskins, and sheepskins.
This helps to control bacterial development, and helps to control insects.
pH buffer
Boric acid in equilibrium with its conjugate base the borate ion is widely used (in the concentration range 50 - 100 ppm boron equivalents) as a primary or adjunct pH buffer system in swimming pools.
Boric acid is a weak acid, with pKa (the pH at which buffering is strongest because the free acid and borate ion are in equal concentrations) of 9.24 in pure water at 25 °C.
But apparent pKa is substantially lower in swimming pool or ocean waters because of interactions with various other molecules in solution.
Boric acid will be around 9.0 in a salt-water pool.
No matter which form of soluble boron is added, within the acceptable range of pH and boron concentration for swimming pools, boric acid is the predominant form in aqueous solution, as shown in the accompanying figure.
The boric acid - borate system can be useful as a primary buffer system (substituting for the bicarbonate system with pKa1 = 6.0 and pKa2 = 9.4 under typical salt-water pool conditions) in pools with salt-water chlorine generators that tend to show upward drift in pH from a working range of pH 7.5 - 8.2.
Buffer capacity is greater against rising pH (towards the pKa around 9.0), as illustrated in the accompanying graph.
The use of boric acid in this concentration range does not allow any reduction in free HOCl concentration needed for pool sanitation, but it may add marginally to the photo-protective effects of cyanuric acid and confer other benefits through anti-corrosive activity or perceived water softness, depending on overall pool solute composition.
Lubrication
Colloidal suspensions of nanoparticles of boric acid dissolved in petroleum or vegetable oil can form a remarkable lubricant on ceramic or metal surfaces with a coefficient of sliding friction that decreases with increasing pressure to a value ranging from 0.10 to 0.02.
Self-lubricating B(OH)3 films result from a spontaneous chemical reaction between water molecules and B2O3 coatings in a humid environment.
In bulk-scale, an inverse relationship exists between friction coefficient and Hertzian contact pressure induced by applied load.
Boric acid is used to lubricate carrom and novuss boards, allowing for faster play.
Nuclear power
Boric acid is used in some nuclear power plants as a neutron poison.
The boron in boric acid reduces the probability of thermal fission by absorbing some thermal neutrons.
Fission chain reactions are generally driven by the probability that free neutrons will result in fission and is determined by the material and geometric properties of the reactor.
Natural boron consists of approximately 20% boron-10 and 80% boron-11 isotopes.
Boron-10 has a high cross-section for absorption of low energy (thermal) neutrons.
By increasing boric acid concentration in the reactor coolant, the probability that a neutron will cause fission is reduced.
Changes in boric acid concentration can effectively regulate the rate of fission taking place in the reactor.
Boric acid is used only in pressurized water reactors (PWRs) whereas boiling water reactors (BWRs) employ control rod pattern and coolant flow for power control.
BWRs use an aqueous solution of boric acid and borax or sodium pentaborate for an emergency shut down system.
Boric acid may be dissolved in spent fuel pools used to store spent fuel elements.
The concentration is high enough to keep neutron multiplication at a minimum.
Boric acid was dumped over Reactor 4 of the Chernobyl nuclear power plant after its meltdown to prevent another reaction from occurring.
Pyrotechnics
Boron is used in pyrotechnics to prevent the amide-forming reaction between aluminium and nitrates.
A small amount of boric acid is added to the composition to neutralize alkaline amides that can react with the aluminum.
Boric acid can be used as a colorant to make fire green.
For example, when dissolved in methanol it is popularly used by fire jugglers and fire spinners to create a deep green flame much stronger than copper sulfate.
Agriculture
Boric acid is used to treat or prevent boron deficiencies in plants.
Boric acid is also used in preservation of grains such as rice and wheat.
Boric acid is a water-soluble white compound and occurs naturally.
Boric acid consists of oxygen, boron, and hydrogen.
Boric acid is claimed to have antifungal and antimicrobial properties.
Always consult your healthcare provider before applying boric acid to any body part.
Boric acid is irritating to the skin and may cause severe reactions.
The uses may include:
Boric acid is often a part of homeopathic medicines used for treating vaginal discharge and itching.
This medication is a combination of friendly bacteria, vitamin E, and minute amounts of boric acid.
Boric acid is usually used in dilute solutions as a treatment for diaper rash, insect bites and stings, and sunburns.
Boric acid is an effective pesticide for cockroaches, rats, and flies.
Boric acid is called a swimming pool chemical because it has proved to be highly useful for maintenance.
Boric acid can help stabilize the pH level of water and prevent problems with algae.
This product reduces the amount of chlorine needed in the pool. The compound can help to keep the water clear and sparkling. Boric acid is also used for clearing off fungi in the pool water.
Boric acid is also helpful in treating various types of ear infections in both humans and pets (otitis externa, also called swimmer's ear, is an infection of the outer ear canal).
The use of boric acid in children is not recommended.
Boric acid is also helpful in treating foul foot odor.
A person suffering from excessive smelly feet can apply boric acid powder mixed with talc to the inner side of footwear.
Boric acid when mixed with distilled water serves as a wound spray.
The solution contains antiseptic properties that help in treating minor wounds such as cuts and burns.
This must not be used too frequently.
Urine sample bottles often contain boric acid as a preservative, which maintains the quality of the specimen as it travels to the lab.
Clear bottles tend to have a small amount of boric acid powder at the bottom. Research shows that the addition of Boric acid lowers false-positive results.
Boric acid also preserves the white blood cells in the urine for analysis.
Boric acid helps to get rid of tough stains on clothes by adding it to regular detergent while doing laundry.
They are used to remove dirt and odor from kitchens and bathrooms.
Due to its flame-retardant properties, boric acid is extensively used in the manufacture of furniture, mattresses, and insulation. Boric acid is helpful in the preservation of timbers against fungal and insect attack.
Boric acid is used industrially for the manufacture of fiberglass, household glass products, and glass used in liquid crystal display (LCD).
To produce glass with a better chemical and high-temperature resistance, boric acid is applied to glass products.
Boric acid serves as an excellent cleaner for all types of mold problems and insects such as ants, cockroaches, silverfish, fleas, and others.
Boric acid is also used in leather manufacture, and it is used in the jewelry industry in combination with denatured alcohol.
Boric acid is also used for welding flux by blacksmiths.
Its mixture with petroleum or vegetable oil works as an excellent lubricant that can be used on ceramic or metal surfaces. Boric acid can also be used to lubricate carrom boards for faster and smooth play.
Manufacturers use boric acid in various products such as enamels, pesticides, glazes, and paints.
Boric acid is widely used to treat boron deficiencies in plants.
It’s naturally present in vegetables, most fruits, grains, and nuts.
However, we wouldn’t be able to tell because boric acid crystals are odorless and essentially tasteless.
It’s not poisonous in very small amounts that occur in nature.
However, boric acid is poisonous if swallowed or inhaled in large quantities.
High concentrations of boric acid can potentially lead to reproductive problems, possible kidney damage, endocrine disruption, increased liver enzymes, abdominal pain, allergic reaction, burning sensation, irritation, central nervous system (CNS) stimulation, CNS depression, diarrhea, rash, and vomiting.
Boric Acid is a weakly acidic hydrate of boric oxide with mild antiseptic, antifungal, and antiviral properties.
The exact mechanism of action of boric acid is unknown, generally cytotoxic to all cells.
Boric acid is used in the treatment of yeast infections and cold sores.
Boric acid is an odorless white solid. Melting point 171°C.
Sinks and mixes with water.
Boric acid is a member of boric acids.
Boric acid has a role as an astringent.
Boric acid is a conjugate acid of a dihydrogenborate.
Uses:
Used as an insecticide to kill ants and roaches, as a soldering flux, a flame retardant and weatherproofing agent, also used as an additive to dyes, nickeling baths, film developers, glass, enamels, soaps, paints, paper, adhesives, and steel.
Used as a flux, an additive for heat-resistant borosilcate glass and glass fibers, a flame retardant for textile and insulation products, a fungicide for citrus fruits, an eye medicine, and a solute for nickel electroplating baths.
Boric acid is formed by crystallizing a solution of hydrochloric acid or sulfuric acid and borax.
Used for weatherproofing wood, as a preservative, in cosmetics, printing and dyeing, electric condensers, photography, and painting, for impregnating wicks and hardening steel, and to make cements, crockery, porcelain, borates, leather, carpets, hats, and artificial gems; Used therapeutically as an astringent and antiseptic and as a veterinary antibacterial and antifungal.
Registered US pesticide uses include insecticides (stomach poisons for ants, cockroaches, silverfish, and termites), fungicides (wood preservatives), and herbicides (desiccants, photosynthesis interrupters, and algae control in swimming pools and sewage systems).
Both oil base and water base fracturing fluids are being used in the fracturing industry.
Water base, which includes alcohol-water mixtures and low strength acids, make up the majority of treating fluids.
The common chemicals added to these fluids are polymers for viscosity development, crosslinkers for viscosity enhancement, pH control chemicals, gel breakers for polymer degradation following the treatment, surfactants, clay stabilizers, alcohol, bactericides, fluid loss additives and friction reducer
Industry Uses
• Adsorbents and absorbents
• Agricultural chemicals (non-pesticidal)
• Catalyst
• Corrosion inhibitors and anti-scaling agents
• Flame retardants
• Fuels and fuel additives
• Functional fluids (closed systems)
• Intermediates
• Internal Panels & Linings
• Laboratory chemicals
• Oxidizing/reducing agents
• Paint additives and coating additives not described by other categories
• Plating agents and surface treating agents
• Processing aids, not otherwise listed
• Processing aids, specific to petroleum production
• Solvents (which become part of product formulation or mixture)
Consumer Uses
• Agricultural products (non-pesticidal)
• Automotive care products
• Building/construction materials - wood and engineered wood products
• Building/construction materials not covered elsewhere
• Catalyst
• Electrical and electronic products
• Fabric, textile, and leather products not covered elsewhere
• Fuels and related products
• General Distributor Sales
• Glass Products
• Laboratory Use
• Lawn and garden care products
• Metal products not covered elsewhere
• Paints and coatings
• Photographic supplies, film, and photo chemicals
• Plastic and rubber products not covered elsewhere
• Used in product(s) which are used in a variety of applications for surface treatments and also in products which are used as cleaners in plating processes.
• Water treatment products
Household & Commercial/Institutional Products
• Inside the Home
• Landscaping/Yard
• Personal Care
• Pesticides
• Pet Care
General Manufacturing Information
Industry Processing Sectors
• Agriculture, forestry, fishing and hunting
• All other basic inorganic chemical manufacturing
• All other chemical product and preparation manufacturing
• Electrical equipment, appliance, and component manufacturing
• Fabricated metal product manufacturing
• Laboratory Use
• Miscellaneous manufacturing
• Nonmetallic mineral product manufacturing (includes clay, glass, cement, concrete, lime, gypsum, and other nonmetallic mineral product manufacturing.
• Oil and gas drilling, extraction, and support activities
• Organic fiber manufacturing
• Paint and coating manufacturing
• Paper manufacturing
• Pesticide, fertilizer, and other agricultural chemical manufacturing
• Photographic film (typical silver halide film) processing chemistry.
• Plastic material and resin manufacturing
• Utilities
• Wood product manufacturing
• resale of chemicals
Boric acid and its sodium borate salts are pesticides that we can find in nature and many products.
Borax is one of the most common products.
Boric acid and its sodium salts each combine boron with other elements in a different way.
In general, their toxicities each depend on the amount of boron they contain.
Boric acid and its sodium salts can be used to control a wide variety of pests.
These include insects, spiders, mites, algae, molds, fungi, and weeds.
Products that contain boric acid have been registered for use in the United States since 1948.
What are some products that contain boric acid?
Products containing boric acid can be liquids, granules, pellets, tablets, wettable powders, dusts, rods, or baits.
They are used indoors in places like homes, hospitals and commercial buildings.
They are also used in outdoor residential areas, sewage systems, and on food and non-food crops.
There are over five hundred products with boric acid sold in the United States.
Several non-pesticide products containing boric acid include soil amendments, fertilizers, household cleaners, laundry detergents, and personal care products.
Uses:
Boric acid plays a role as a “stomach poison” for certain pest such as cockroaches, ants and termites.
As an insecticide, it usually applied in bait form or used as a dry powder in which containing a feeding attractant and then added into crevices and creaks so that it forms a layer of dust.
So boric acid adheres to their legs when the insects move across the powder.
Hence, they may ingest the poison when the insects groom themselves.
This will causes death due to starvation and dehydration after 3-10 days.
However, the insecticide mechanism of boric acid on insects has not been satisfactorily developed.
Some hypotheses has been suggested including death by starvation owing to abrasive effect on the cuticle then cause destruction or slow drying of foregut cells.
Besides that, when boric acid used as an herbicide, it desiccates or disrupts the photosynthesis system in plants.
Hence, boric acid is normally used to suppress algae in swimming pools and sewage systems.
On the other hand, as a fungicide, the fungicidal properties of boric acid prevent the production of conidia or asexual spores of the fungi; hence, it suppresses the growth of fungi.
Therefore, boric acid is used as wood preservative in wood industry such as lumber and timber products that controls decay producing fungi.
Boric acid is reported to be used as food preservatives in some foods and food products. Boric acid is used for preserving meats, meat products, caviar and dairy products.
This is because boric acid is able to inhibit the growth of microorganism, therefore, the preserved food can stay fresh and longer. Moreover, according to Yiu et al.
Boric acid was added to some food products to control starch gelatinization, as well as enhance the color, texture and flavor of the food.
Boric acid (boracic acid; H3BO3) is used for the manufacture of glass, welding, mattress batting, cotton textiles, and a weak eyewash solution.
Boric acid (H3BO3) is a solid, soft, smooth, solid weak acid that is used in pharmaceutical and cosmetic industries.
The primary industrial use of boric acid is in the manufacture of monofilament fiberglass usually referred to as “textile fiberglass”.
Textile fiberglass is used to reinforce plastics in applications that range from boats, to industrial piping to computer circuit boards. Boric acid is used in nuclear power plants to slowdown the rate at which fission is occurring.
Fission chain reactions are generally driven by the amount of neutrons present (as products from previous fissions).
Boric acid is used in producing the glass faceplates of LCD flat panel displays.
In electroplating, boric acid is used as part of some proprietary formulas.
Boric acid is also used in the manufacturing of “remming mass”, a fine silica-containing powder used for producing induction furnace linings. Borates including boric acid have been used since the time of the Greeks for cleaning, preserving food, and other activities.
Boric acid is used in pyrotechnics to prevent the amide-forming reaction between aluminum and nitrates.
A small amount of boric acid is added to the composition to neutralize alkaline amides that can react with the aluminum.
Boric acid dissolved in methane is popularly used among fire jugglers and fire spinners to create a deep green flame.
Boric acid is added to salt in the curing of cattle hides, calfskins and sheepskins.
Used in that way it helps to control bacteria development and also aids in the control of insects.
Pharmaceutic necessity.
boric acid is an effective preservative against yeast.
Boric acid is used in concentrations of 0.01 to 1.0 percent and has fair to good antiseptic properties.
Boric acid may also be used as a buffer and denaturant.
Boric acid is prepared from sulfuric acid and natural borax.
Boric acid can cause skin rashes and irritation if used in high concentrations.
The use of boric acid in cosmetic preparations is no longer very popular.
A substance made by adding hydrochloric acid to a strong, hot solution of borax and water.
When cooled, this mixture forms colorless crystals of boric acid.
These require washing and recrystallization.
Boric acid was occasionally used as an antiseptic and in combined toning and fixing baths.
Agricultural Uses
Boric acid (H3BO3) is one of the boron-containing nutrients added to fertilizers.
Boric acid contains around 17% boron.
A solution of boric acid and water is used as a foliar spray to overcome boron deficiency.
Boric acid, also called boracic acid or orthoboric acid or acidum boricum, is a weak acid often used as an antiseptic, insecticide, flame retardant, in nuclear power plants to control the fission rate of uranium, and as a precursor of other chemical compounds.
About Boric acid
Helpful information
Boric acid is registered under the REACH Regulation and is manufactured in and / or imported to the European Economic Area, at ≥ 100 000 to < 1 000 000 tonnes per annum.
Boric acid is used by consumers, in articles, by professional workers (widespread uses), in formulation or re-packing, at industrial sites and in manufacturing.
Biocidal Uses
Boric acid is approved for use as a biocide in the EEA and/or Switzerland, for: wood preservation.
Consumer Uses
Boric acid is used in the following products: washing & cleaning products, lubricants and greases, adhesives and sealants, anti-freeze products and heat transfer fluids.
Boric acid has an industrial use resulting in manufacture of another substance (use of intermediates).
Other release to the environment of Boric acid is likely to occur from: indoor use (e.g. machine wash liquids/detergents, automotive care products, paints and coating or adhesives, fragrances and air fresheners), outdoor use, indoor use in long-life materials with low release rate (e.g. flooring, furniture, toys, construction materials, curtains, foot-wear, leather products, paper and cardboard products, electronic equipment), outdoor use in long-life materials with low release rate (e.g. metal, wooden and plastic construction and building materials), indoor use in close systems with minimal release (e.g. cooling liquids in refrigerators, oil-based electric heaters) and outdoor use in close systems with minimal release (e.g. hydraulic liquids in automotive suspension, lubricants in motor oil and break fluids).
Article service life
Release to the environment of Boric acid can occur from industrial use: formulation of mixtures, in the production of articles, as an intermediate step in further manufacturing of another substance (use of intermediates), formulation in materials and industrial abrasion processing with low release rate (e.g. cutting of textile, cutting, machining or grinding of metal).
Other release to the environment of Boric acid is likely to occur from: indoor use in long-life materials with low release rate (e.g. flooring, furniture, toys, construction materials, curtains, foot-wear, leather products, paper and cardboard products, electronic equipment) and outdoor use in long-life materials with low release rate (e.g. metal, wooden and plastic construction and building materials).
Boric acid can be found in complex articles, with no release intended: machinery, mechanical appliances and electrical/electronic products (e.g. computers, cameras, lamps, refrigerators, washing machines).
Boric acid can be found in products with material based on: stone, plaster, cement, glass or ceramic (e.g. dishes, pots/pans, food storage containers, construction and isolation material), metal (e.g. cutlery, pots, toys, jewellery), paper (e.g. tissues, feminine hygiene products, nappies, books, magazines, wallpaper), wood (e.g. floors, furniture, toys) and fabrics, textiles and apparel (e.g. clothing, mattress, curtains or carpets, textile toys).
Widespread uses by professional workers
Boric acid is used in the following products: lubricants and greases, laboratory chemicals, washing & cleaning products, inks and toners, photo-chemicals, fertilisers, water treatment chemicals and metal working fluids.
Boric acid has an industrial use resulting in manufacture of another substance (use of intermediates).
Boric acid is used in the following areas: building & construction work, agriculture, forestry and fishing, printing and recorded media reproduction and formulation of mixtures and/or re-packaging.
Boric acid is used for the manufacture of: fabricated metal products, machinery and vehicles and chemicals.
Other release to the environment of Boric acid is likely to occur from: indoor use (e.g. machine wash liquids/detergents, automotive care products, paints and coating or adhesives, fragrances and air fresheners) and outdoor use.
Formulation or re-packing
Boric acid is used in the following products: pH regulators and water treatment products, metal working fluids, lubricants and greases and laboratory chemicals.
Boric acid has an industrial use resulting in manufacture of another substance (use of intermediates).
Release to the environment of Boric acid can occur from industrial use: formulation of mixtures, in the production of articles, as an intermediate step in further manufacturing of another substance (use of intermediates), formulation in materials and manufacturing of the substance.
Uses at industrial sites
Boric acid is used in the following products: pH regulators and water treatment products, water treatment chemicals, welding & soldering products and laboratory chemicals.
Boric acid has an industrial use resulting in manufacture of another substance (use of intermediates).
Boric acid is used in the following areas: formulation of mixtures and/or re-packaging and building & construction work.
Boric acid is used for the manufacture of: chemicals, mineral products (e.g. plasters, cement), machinery and vehicles, metals and fabricated metal products.
Release to the environment of Boric acid can occur from industrial use: in the production of articles, as an intermediate step in further manufacturing of another substance (use of intermediates), in processing aids at industrial sites, as processing aid, formulation of mixtures and manufacturing of the substance.
Manufacture
Release to the environment of Boric acid can occur from industrial use: manufacturing of the substance, as an intermediate step in further manufacturing of another substance (use of intermediates), as processing aid, formulation of mixtures, in the production of articles and formulation in materials.
Other release to the environment of Boric acid is likely to occur from: indoor use (e.g. machine wash liquids/detergents, automotive care products, paints and coating or adhesives, fragrances and air fresheners).
IUPAC NAMES:
acide borique
Acidium boricum
BORIC ACID
Boric Acid
Boric acid
boric acid
Boric Acid
Boric acid
boric acid
Boric acid (H3BO3)
boric acid. Trihydroxidoboron
Boric acidTrihydrooxidoboron
boric acidTrihydroxidoboron
Borsäure
Bórsav
not available
Ortho-boric Acid
Ortho-boric acid
Orthoboric Acid
Orthoboric acid
Orthoboric acid, Trihydroxidoboron
Reaction mass of 7446-20-0 and 77892-00-
TRHIOSSOBORIC ACID
Trihydroxidoboron
SYNONYMS:
BORIC ACID
Orthoboric acid
10043-35-3
Boracic acid
Borofax
Boron hydroxide
Boron trihydroxide
Three Elephant
Basilit B
Trihydroxyborone
Boric acid (BH3O3)
Boric acid (H3BO3)
Flea Prufe
11113-50-1
Super Flea Eliminator
Orthoboric acid (B(OH)3)
Orthoborsaeure
Borsaeure
Borsaure
Trihydroxyborane
Acidum boricum
Dr.'s 1 Flea Terminator DT
Boric acid (VAN)
Bluboro
Dr.'s 1 Flea Terminator DFPBO
NCI-C56417
Dr.'s 1 Flea Terminator DF
Collyrium Eye Wash
Dr.'s 1 Flea Terminator DTPBO
B(OH)3
trihydroxidoboron
Ant flip
Homberg's salt
UNII-R57ZHV85D4
MFCD00011337
NSC 81726
Boric acid (TN)
(10B)Orthoboric acid
Boracic acid, Orthoboric acid
R57ZHV85D4
CHEBI:33118
[B(OH)3]
NSC-81726
NCGC00090745-02
Optibor
DSSTox_CID_194
Orthboric Acid
Kjel-Sorb™ Solution
DSSTox_RID_75425
DSSTox_GSID_20194
Borsaure [German]
Caswell No. 109
Boron, Reference Standard Solution
Kjel-sorb
Kill-off
ortho-boric acid
Boric acid [USAN:JAN]
hydrogen orthoborate
BO3
CCRIS 855
Niban Granular Bait
CAS-10043-35-3
HSDB 1432
Boric acid [JAN:NF]
BORIC ACID, ACS
EINECS 233-139-2
EPA Pesticide Chemical Code 011001
Orthoboric acid (H3BO3)
hydrogen borate
Boricum acidum
Orthoborc acd
AI3-02406
Boric acid flakes
Boric Acid, Powder
Bluboro (Salt/Mix)
Boric Acid, Granular
Boric acid ACS grade
Boric acid, Puratronic?
WLN: QBQQ
Boric acid, ACS reagent
Heptaoxotetra-Borate(2-)
bmse000941
Boric acid (JP15/NF)
Boric acid (JP17/NF)
Acidum boricum (Salt/Mix)
EC 233-139-2
Boric acid, NF/USP grade
Boric acid, biochemical grade
CHEMBL42403
INS NO.284
Boric acid Electrophoresis grade
Collyrium Eye Wash (Salt/Mix)
Boric acid, 99.9% metals basis
BCP21018
Boric acid, 99.99% metals basis
Boric acid, BioXtra, >=99.5%
Boric acid (h(sub 3)bo(sub 3))
Boric acid, 99.998% metals basis
Boric acid, ACS reagent, >=99.5%
11113-50-1;Boric acid;Boracic acid
Boric acid, 99.97% trace metals basis
Boric acid, USP, 99.5-100.5%
Boric acid, crude natural, containing not more than 85 per cent ofH3BO3 calculated on the dry weight
Boric acid, ReagentPlus(R), >=99.5%
BP-13473
Boric acid, 99.999% trace metals basis
Boric acid, SAJ first grade, >=99.5%
Boric acid, for electrophoresis, >=99.5%
Boric acid, JIS special grade, >=99.5%
B7305
Boric acid, Vetec(TM) reagent grade, 98%
Boric acid, tablet, 1 g boric acid per tablet
Boric acid, >=99.5%, suitable for amino acid analysis
Boric acid, NIST(R) SRM(R) 951a, isotopic standard
Boric acid, NIST(R) SRM(R) 973, acidimetric standard
Boric acid, BioUltra, for molecular biology, >=99.5% (T)
Boric acid, United States Pharmacopeia (USP) Reference Standard
Boric acid, cell culture tested, plant cell culture tested, >=99.5%
Boric acid, Biotechnology Performance Certified, >=99.5% (titration), Cell Culture Tested
Boric acid, p.a., ACS reagent, reag. ISO, reag. Ph. Eur., 99.5-100.5%
Boron standard solution, 1 mg/mL B, suitable for atomic absorption spectrometry, 1000 ppm B
Buffer solution, pH 11.00 (?0.01 at 25?C), No Color, Specpure?, NIST Traceable
Boric acid, BioReagent, for molecular biology, suitable for cell culture, suitable for plant cell culture, >=99.5%
Boric acid, puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., buffer substance, >=99.8%
Boric acid, puriss., meets analytical specification of Ph. Eur., BP, NF, 99.5-100.5%, powder
Boric acid Manufacturer
boric acid cas 11113-50-1 factory supply kf-wang(at)chem.com
Boric acid Joyce
Boric acid test solution(ChP)
Boric acid
Borsrenatliche
borid acid
BoricAcid(AS),Borofax
HighPurS - Boric Acid- min. 99.999% - Noncertified
boric acid chunks
Boric acid flake
boric acid chunks BH3O3
Boric acid Basic information
Boric acid USP/EP/BP
Boric Acid Powder/Flakes/Chunks 11113 50 1
High Quality Boric acid
API Boric Acid CAS 11113 50 1
Boricacid flakes /chunk
3- (1-Naphthoyl) Indole CAS 11113-50-1
Chemical Boric Acid Flake Powder
Boric acid test solution
