Boric acid

Base Information

• Chemical Name: Boric acid
• CAS No.: 11113-50-1
• Molecular Formula: BH3O3
• Molecular Weight: 61.833
• Hs Code.: 2810002000
• Mol file: 11113-50-1.mol

Synonyms:UNII-R57ZHV85D4;

Chemical Property of Boric acid

Chemical Property:

• Appearance/Colour: White powder
• Melting Point: 170.9oC
• Refractive Index: 1.385
• PKA: 9.2(at 25℃)
• PSA: 60.69000
• Density: 1.437 g/cm³
• LogP: -2.05180
• Storage Temp.: Room Temperature
• Solubility.: DMSO (Slightly), Water (Slightly)
• Water Solubility.: 49.5 g/L (20℃)

Purity/Quality:

99% ^*data from raw suppliers

Boric acid Meets ACS Specifications, Meets Reagent Specifications for testing USP/NF monographs GR ACS ^*data from reagent suppliers

Safty Information:

• Pictogram(s): R60:
• Hazard Codes: T:Toxic
• Statements: R60:
• Safety Statements: S45:; S53:

MSDS Files:

SDS file from LookChem

Useful:

• 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.
• 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.

Technology Process of Boric acid

There total 710 articles about Boric acid which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield: 50.0%

boron tribromide (10294-33-4) → boron + boron trioxide + boron nitride (10043-11-5) + boron + boric acid (11113-50-1,14635-83-7)

Guidance literature:

With H₂; N₂; In neat (no solvent); Electric Arc; pulse heating (plasma, puls repitition rate 5-12,5 Hz, N2 flow 0.2 - 1.65 l/min, H2 flow 1.13 - 3.5 l/min9; further products; X-ray diffraction;

Reference yield:

phosphorus(V) chloride * 2 BBr3 → hydrogenchloride (7647-01-0,15364-23-5) + phosphoric acid (86119-84-8,7664-38-2) + hydrogen bromide (10035-10-6,12258-64-9) + boric acid (11113-50-1,14635-83-7)

Guidance literature:

With moist air; In neat (no solvent); hydrolysis with moist air under formation of H3PO4, H3BO3 and evolution of HCl and HBr;;

Reference yield:

boron trioxide → boric acid (11113-50-1,14635-83-7) + metaboric acid (13460-50-9)

Guidance literature:

With nitric acid; HNO3 conc. between 60-94%;

upstream raw materials:

5-bromo-2-chloropyridine

pyrographite

triacetoxyborane

dihydrogen peroxide

Downstream raw materials:

trimethoxysilane

Tocopherol

RRR-α-tocopheryl acetate

Trimethyl borate

Refernces

• 1、 Spielman, John R.,Burg, Anton B.. "Further studies of the tetraborane carbonyl B4H8CO". . p. 1139 - 1145. Retrieved 1963.
• 2、 Grafstein, Daniel,Dvorak, Joseph. "Neocarboranes, a new family of stable organoboranes isomeric with the carboranes". . p. 1128 - 1133. Retrieved 1963.
• 3、 Yang, Kun,Yang, Kangkang,Zhang, Shiliang,Luo, Yan,Yao, Qilu,Lu, Zhang-Hui. "Complete dehydrogenation of hydrazine borane and hydrazine catalyzed by MIL-101 supported NiFePd nanoparticles". . p. 363 - 371. Retrieved 2018.
• 4、 Das, Mrinal Kanti,Bandyopadhyay, Soumendra Nath,Bhattacharyya, Siddhartha,Banerjee, Rupendranath. "Kinetics and Mechanism of Hydrolysis of Some Amine-Cyanoboranes in Acid Perchlorate Media". . p. 2929 - 2932. Retrieved 1991.
• 5、 Stockmayer, W. H.,Miller, R. R.,Zeto, R. J.. "". . p. 1076 - 1077. Retrieved 1961.
• 6、 Brown, J. B.,Svensson, M.. "". . p. 4241 - 4242. Retrieved 1957.
• 7、 Onak et al.. "". . p. 1533. Retrieved 1959.
• 8、 Skinner,Smith. "". . p. 2324,2326. Retrieved 1954.
• 9、 Schlesinger et al.. "-". . p. 199,203. Retrieved 1953.
• 10、 Ishikawa, Yoshie,Shimizu, Yoshiki,Sasaki, Takeshi,Koshizaki, Naoto. "Boron carbide spherical particles encapsulated in graphite prepared by pulsed laser irradiation of boron in liquid medium". . . Retrieved 2007.