ChemicalBook >> CAS DataBase List >>Boric acid

Boric acid

CAS No.
11113-50-1
Chemical Name:
Boric acid
Synonyms
Boric acid flake;boric acid chunks;borid acid;Chemical Boric Acid Flake Powder;Boric acid;Borsrenatliche;Boric acid chunk;Boric acid Joyce;Boric acid USP/EP/BP;BoricAcid(AS),Borofax
CBNumber:
CB8874759
Molecular Formula:
BH3O3
Lewis structure
h3bo3 lewis structure
Molecular Weight:
61.83
MDL Number:
MFCD00011337
MOL File:
11113-50-1.mol
Last updated:2024-08-07 19:09:42

Boric acid Properties

Melting point >148oC (dec.)
storage temp. Room Temperature
solubility DMSO (Slightly), Water (Slightly)
form Liquid
pka 9.2(at 25℃)
color Clear, dark blue
InChI InChI=1S/BH3O3/c2-1(3)4/h2-4H
InChIKey KGBXLFKZBHKPEV-UHFFFAOYSA-N
SMILES B(O)(O)O
FDA 21 CFR 175.105; 176.180; 310.545
EWG's Food Scores 5-8
FDA UNII R57ZHV85D4
ATC code S02AA03
Pesticides Freedom of Information Act (FOIA) Boric acid
EPA Substance Registry System Boric acid (11113-50-1)
Cosmetics Info Boric Acid

SAFETY

Risk and Safety Statements

Symbol(GHS)  GHS hazard pictograms
GHS08
Signal word  Danger
Hazard statements  H360FD

Boric acid price More Price(6)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 31146 Boric acid puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., buffer substance, ≥99.8% 11113-50-1 500g $157 2021-12-16 Buy
Sigma-Aldrich 31146 Boric acid puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., buffer substance, ≥99.8% 11113-50-1 1kg $176 2021-12-16 Buy
Sigma-Aldrich 31146 Boric acid puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., buffer substance, ≥99.8% 11113-50-1 6x500G $338 2021-12-16 Buy
Sigma-Aldrich 31146 Boric acid puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., buffer substance, ≥99.8% 11113-50-1 2.5kg $351 2021-12-16 Buy
Sigma-Aldrich 31146 Boric acid puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., buffer substance, ≥99.8% 11113-50-1 6x1kg $593 2021-12-16 Buy
Product number Packaging Price Buy
31146 500g $157 Buy
31146 1kg $176 Buy
31146 6x500G $338 Buy
31146 2.5kg $351 Buy
31146 6x1kg $593 Buy

Boric acid Chemical Properties,Uses,Production

Chemical Properties

Boric acid is a weak acid (pKa = 9.15), existing in aqueous solutions at or below pH 7 as undissociated boric acid. In the solid there is considerable hydrogen bonding between H3BO3 molecules resulting in a layer structure, which accounts for the easy cleavage of the crystals. H3BO3 molecules also exist in dilute solutions but in more concentrated solutions polymeric acids and ions are formed (e.g. H4B2O7; pyroboric acid or tetrahydroxomonoxodiboric(III) acid). The compound is a very weak acid but also acts as a Lewis acid in accepting hydroxide ions:
B(OH)3 + H2O→B(OH)4 - + H+
If solid boric acid is heated it loses water and transforms to another acid at 300℃. This is given the formula HBO2 but is in fact a polymer (HBO2)n. It is called metaboric acid or, technically, polydioxoboric(III) acid.

Physical properties

Boric acid exists in the form of colorless crystals or as a white powder and is soluble in water. It occurs naturally in the condensate from volcanic steam vents (suffioni). Commercially, it is made by treating borate minerals (e.g. kernite, Na2B4O7.4H2O) with sulphuric acid followed by recrystallization.

Uses

Boric acid is used in the manufacture of glass (borosilicate glass), glazes and enamels, leather, paper, adhesives, and explosives. It is widely used (particularly in the USA) in detergents, and because of the ability of fused boric acid to dissolve other metal oxides it is used as a flux in brazing and welding. Because of its mild antiseptic properties it is used in the pharmaceutical industry and as a food preservative.
boric acid is an effective preservative against yeast. It is used in concentrations of 0.01 to 1.0 percent and has fair to good antiseptic properties. It may also be used as a buffer and denaturant. Boric acid is prepared from sulfuric acid and natural borax. It can cause skin rashes and irritation if used in high concentrations. The use of boric acid in cosmetic preparations is no longer very popular.

Application

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. It 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. It 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.

Indications

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. It is used in the treatment of yeast infections and cold sores.
Boric acid, 600 mg in a gelatin capsule, used intravaginally daily for 14 days, has been reported effective even in resistant Candida infections.

Definition

ChEBI: Boric acid is a member of boric acids. It has a role as an astringent. It is a conjugate acid of a dihydrogenborate.

Preparation

Boric acid is prepared by treating borax with nitric acid and nitric acid is chosen over hydrochloric acid because sodium nitrate is more readily soluble than sodium chloride, and sulphuric acid is hard to wash out so not employed.
In laboratory boric acid is prepared from sodium borate.
Na2B4O7 + H2SO4 + 5H2O→ Na2SO4 + 4H3BO3

Agricultural Uses

Boric acid is used as an insecticide for controlling house holding pests like termites, ants, and small insects.
Boric acid (H3BO3) is one of the boron-containing nutrients added to fertilizers. It contains around 17% boron. A solution of boric acid and water is used as a foliar spray to overcome boron deficiency.

Pharmaceutical Applications

Boric acid is a long-standing traditional remedy with mainly antifungal and antimicrobial effects. For medicinal uses, it has become known as sal sedativum, which was discovered by Homberg, the Dutch natural philosopher, in 1702. Diluted solutions were and sometimes still are used as antiseptics for the treatment of athletes’ foot and bacterial thrush, and in much diluted solutions as eyewash.

Potential Exposure

Boric acid is a fireproofing agent for wood; a preservative, and an antiseptic. It is used in the manufacture of glass, pottery, enamels, glazes, cosmetics, cements, porcelain, borates, leather, carpets, hats, soaps; artificial gems; in tanning leather; printing, dyeing, painting, and photography.

Shipping

UN 3077 Environmentally hazardous substances, solid, n.o.s., Hazard class: 9; Labels: 9—Miscellaneous hazardous material, Technical Name Required.

Incompatibilities

Boric acid decomposes in heat above 100 C, forming boric anhydride and water. Boric acid is hygroscopic; it will absorb moisture from the air. Boric acid aqueous solution is a weak acid; incompatible with strong reducing agents including alkali metals and metal hydrides (may generate explosive hydrogen gas); acetic anhydride, alkali carbonates, and hydroxides. Violent reaction with powdered potassium metal, especially if impacted. Attacks iron in the presence of moisture.

Waste Disposal

Boric acids may be recovered from organic process wastes as an alternative to disposal.

121-43-7
102-24-9
67-56-1
11113-50-1
Synthesis of Boric acid from Trimethyl borate and Trimethoxyboroxine
Global( 397)Suppliers
Supplier Tel Email Country ProdList Advantage
Hebei Zhuanglai Chemical Trading Co.,Ltd
+8613343047651 admin@zlchemi.com China 3002 58
XINGTAI XINGJIU NEW MATERIAL TECHNOLOGY CO., LTD
+8617731987558 xingjiu@xingjiubiotech.com China 989 58
Baoji Guokang Bio-Technology Co., Ltd.
0917-3909592 13892490616 gksales1@gk-bio.com China 9315 58
Wuhan Ruichi Technology Co., Ltd
+8613545065237 admin@whrchem.com China 153 58
Hebei Mojin Biotechnology Co., Ltd
+86 13288715578 +8613288715578 sales@hbmojin.com China 12837 58
Dorne Chemical Technology co. LTD
+86-86-13583358881 +8618560316533 Ethan@dornechem.com China 3105 58
Firsky International Trade (Wuhan) Co., Ltd
+8615387054039 admin@firsky-cn.com China 427 58
Anhui Yiao New Material Technology Co., Ltd
+86-18033737140 +86-17354101231 sales1@hbganmiao.com China 227 58
Henan Bao Enluo International TradeCo.,LTD
+86-17331933971 +86-17331933971 deasea125996@gmail.com China 2472 58
Guangzhou Tengyue Chemical Co., Ltd.
+86-86-18148706580 +8618826483838 evan@tyvovo.com China 149 58

Related articles

  • The uses of Boric acid
  • Boric acid is a water-soluble white compound and occurs naturally. Its molecular formula is H3BO3.
  • Mar 5,2024
  • What Color Does Boric Acid Burn?
  • A very pale green color is imparted to the flame by boron in boric acid. Because, Boric Acid is a boron containing compound An....
  • Jan 25,2024

View Lastest Price from Boric acid manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
Boric acid pictures 2024-11-04 Boric acid
11113-50-1
US $1.00 / g 1g 99% 1000kg Dorne Chemical Technology co. LTD
Boric acid pictures 2024-11-04 Boric acid
11113-50-1
US $10.00 / kg 1kg 99% 20ton Hebei Zhuanglai Chemical Trading Co.,Ltd
boric acid pictures 2024-11-04 boric acid
11113-50-1
US $6.00 / kg 1kg 99% 2000KG/Month HebeiShuoshengImportandExportco.,Ltd
  • Boric acid pictures
  • Boric acid
    11113-50-1
  • US $1.00 / g
  • 99%
  • Dorne Chemical Technology co. LTD
  • Boric acid pictures
  • Boric acid
    11113-50-1
  • US $10.00 / kg
  • 99%
  • Hebei Zhuanglai Chemical Trading Co.,Ltd
  • boric acid pictures
  • boric acid
    11113-50-1
  • US $6.00 / kg
  • 99%
  • HebeiShuoshengImportandExportco.,Ltd
Boric acid Borsrenatliche Boric acid Manufacturer boric acid cas 11113-50-1 factory supply kf-wang(at)chem.com Boric acid Joyce Boric acid test solution(ChP) BoricAcid(AS),Borofax HighPurS - Boric Acid- min. 99.999% - Noncertified boric acid chunks BH3O3 Boric acid Basic information Boric acid USP/EP/BP API Boric Acid CAS 11113 50 1 High Quality Boric acid Boric Acid Powder/Flakes/Chunks 11113 50 1 Boricacid flakes /chunk 3- (1-Naphthoyl) Indole CAS 11113-50-1 Boric acid test solution borid acid boric acid chunks Boric acid flake Chemical Boric Acid Flake Powder L-Alanine, N-(trifluoroacetyl)-, 1-methylpropyl ester, (S)- Boric acid chunk 11113-50-1 1113-50-1 UVCBs-inorganic 11113-50-1