Boric acid 99.9%

 Product description

Chinese name: Boric acid

English name: boric acid

Molecular formula: H3BO3

Boron content (B): 17%

Water insoluble matter: 0.005%

Sulfate (SO4): 0.003%

CAS: 10043-35-3

HS Code: 28100020

Boric acid is actually a hydrate of boron oxide (B2O33H2O), which is a white powder crystal or a scaly glossy crystal on a tri-oblique axis. Soluble in water, alcohol, glycerin, ethers and essential oils, odorless, slightly sour and bitter after taste. Exposure does not change in the air, and can volatilize with water vapor. When heated to 100-105 ℃, a molecule of water is lost to form metaboric acid; when heated for a long time at 104-160 ℃, it is converted into pyroboric acid, and anhydrous is formed at higher temperature. The PH of boric acid is 5.1.1g in 0.1mol/L aqueous solution, which can be dissolved in 18ml cold water, 4ml boiling water, 18ml cold ethanol, 6ml boiling ethanol and 4ml glycerol. The solubility in water can be increased with the addition of hydrochloric acid, citric acid and tartaric acid. Relative density: 1.4347, melting point 184°C (decomposition), boiling point 300°C.

 Technical parameter

 Product Usage

1. Preparation of various borates, insecticides for cockroaches and black beetles in carpets.

2. It is used as a hemostatic agent and preservative in medicine, as a pH regulator, disinfectant, bacteriostatic preservative, etc.

3. It is used to prepare borates, borate esters, optical glass, paints, pigments, boric acid soaps, leather finishing agents, printing and dyeing auxiliaries and disinfectants in medicine.

4. It is used in capacitor manufacturing and electronic components industry, high-purity analytical reagents, medicinal disinfection and anti-corrosion and preparation of exposed photosensitive materials, processing and pharmaceutical industries.

5. Used in glass, enamel, ceramics, medicine, metallurgy, leather, dyes, pesticides, fertilizers, textiles and other industries.

6. It can be used as a chromatographic analysis reagent, and also used in the preparation of buffers.

7. It is widely used in the glass industry (optical glass, acid-resistant glass, heat-resistant glass, glass fiber for insulating materials), which can improve the heat resistance and transparency of glass products, improve mechanical strength, and shorten melting time.

8. In the enamel and ceramic industries, it is used to enhance the luster and fastness of enamel products, and is also one of the components of glaze and pigments.

9. As an additive and co-solvent in the metallurgical industry, especially boron steel has high hardness and good ductility, and can replace nickel and copper.

10. Boric acid has antiseptic properties and can be used as a preservative, such as wood preservation.

11. It is used in metal welding, leather, photography and other industries and in the manufacture of dyes, heat-resistant and fire-resistant fabrics, artificial gems, capacitors, and cosmetics.

12. It can be used as boron fertilizer in agriculture, because boric acid contains 17% of the trace element boron. Fertilizer effect on many crops, can improve crop quality and increase yield.

13. Boric acid can be used as furnace charge in industry.

14. Boric acid also plays an important role in dyes and is an indispensable raw material in dyes.

 Package

50kg/bag (inner plastic bag and outer woven bag)

25kg/bag (packed in kraft paper bag)

1 ton/ton bag

 Storage method

It should be stored in a dry and clean warehouse, not stacked in the open air, and should be protected from rain or moisture.

It should be transported in a caravan, cabin or car with a canopy, and should not be stacked with wet items and colored materials. The means of transport must be dry and clean.

Application method and suggestion of boric acid as boron fertilizer

Application method and suggestion of boric acid as boron fertilizer

The application of boron fertilizer is a scientific and technical work. Before applying boron fertilizer, it should be based on soil conditions, the amount of boron required for different crops, the amount of boron required for different growth stages, the sensitivity of crops to boron, and the climatic conditions. , the balance relationship between nutrients, and the symptoms of boron deficiency in crops are applied through scientific calculations to ensure appropriate application of boron fertilizer to avoid boron damage. In addition to the above factors, boron fertilizer should be applied according to various boron fertilizer conditions. The correct application method, the application method of some boron fertilizers is briefly introduced as follows:

The pure boric acid contains B2O3: 56.3%, then B is: 17.48%; the industrial grade product contains B2O3: 55.7%, then B is: 17.29%.

Boric acid is soluble in water, and the aqueous solution is weakly acidic. Its application range and method are the same as those of borax. The difference is that the boric acid content of boric acid is about 54% higher than that of borax. The dosage or dilution concentration should be reduced accordingly to avoid waste or cause boron damage.