Orthoboric acid CAS# 10043-35-3

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• Chemical Name:  Orthoboric acid
• CAS No.:     10043-35-3
• Molecular Fomula: ：BH3O3
• Molecular weight：61.83
• Appearance:white powder
• Sample：Available

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Description of Reagent

• Boric acid, also called hydrogen borate, boracic acid, orthoboric acid and acidum boricum, is a weak, monobasic Lewis acid of boron often used as an antiseptic, insecticide, flame retardant, neutron absorber, or precursor to other chemical compounds. It has the chemical formula H3BO3 (sometimes written B(OH)3), and exists in the form of colorless crystals or a white powder that dissolves in water. When occurring as a mineral, it is called sassolite.

Basic Info of Reagent

Basic Info
Numbering system
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Safety Info
Basic Info

Numbering system

Properties

Safety Info

What is Orthoboric acid?

• With the progress of science and technology and the development of society, chemical products have invariably permeated our daily lives, in medicine, food, cosmetics, electronics, industry, and other areas, becoming an essential part of our lives. One such product is Orthoboric acid   which has developed particularly rapidly in recent years. Do you know about Orthoboric acid?
• The official answer：Boric acid is a crystalline compound produced by dissolving boron trioxide in water and is an inorganic acid, mainly tetraboric acid H2B4O7 (also known as pyroboric acid), metaboric acid (HBO2)n, and orthoboric acid H3BO3 (also known as proto-boric acid). Of these, orthoboric acid contains the most water and is the most stable. Orthoboric acid also referred to as boric acid, has a lustrous appearance of white powdery crystals or scaly crystals with trigonal axial faces. It has a slightly bitter taste. It has a slippery sensation in contact with the skin. It is odorless and soluble in water, ethanol, glycerin, ether, and essential oil. The aqueous solution is weakly acidic. Orthoboric acid gradually dehydrates into metaboric acid when heated to 70-100℃, into pyroboric acid at 150℃-160℃ and into boric anhydride (B2O3) at 300℃. Boric acid is toxic to the human body. Solubility in water: 2.77 at 0°C, 3.65 at 10°C, 4.87 at 20°C, 5.74 at 25°C, 6.77 at 30°C, 8.90 at 40°C, 11.39 at 50°C, 14.89 at 60°C, 23.54 at 80°C, 38.00 at 100°C. The aqueous solution is weakly acidic, typical of Lewis acid, and in the presence of hydrochloric acid, citric acid, or tartaric acid, it can promote solubility in water. The presence of hydrochloric acid, citric acid, or tartaric acid, can promote solubility in water. Therefore, it can be purified by the recrystallization method.

What’s the application of Orthoboric acid?

• Used in glass, enamel, ceramics, medicine, metallurgy, leather, dyestuff, pesticides, fertilizers, textiles and other industrial uses as chromatographic analysis reagents, also used in the preparation of buffer uses a large number of glass (optical glass, acid-resistant glass, heat-resistant glass, insulation materials with glass fiber) industry, can improve the heat resistance of glass products, transparency, improve mechanical strength, shorten the melting time. In the enamel and ceramic industry, it is used to enhance the luster and fastness of enamel products and is also one of the components of glaze and pigment. In the metallurgical industry as additives, co-solvents, especially boron steel with high hardness and good rolling ductility, can replace nickel steel. Boric acid has antiseptic properties and can be used as a preservative, such as wood preservation. It is used in metal welding, leather, photography, and other industries, as well as in the manufacture of dyes, heat-resistant fireproof fabrics, artificial gemstones, capacitors, and cosmetics. It is also used as a pesticide and catalyst. Fertilizers containing boron trace elements in agriculture are effective for many crops, improving crop quality and yield. Boric acid is also one of the basic raw materials for the production of other boron compounds, which are widely used in defense and other industrial sectors and scientific research units as PH regulators, antibacterial and antiseptic agents. It is used to prepare buffer solution and various borates, and to prepare various culture media in haploid breeding.

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