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Hs Code 2810002000 Boron Boric Acid , Un No 1439 Hydrogen Borate Pure Powder
Product Details:
| Place of Origin: | CHINA |
| Brand Name: | YIXIN |
| Certification: | ISO9001 |
| Model Number: | YXB-005 |
Payment & Shipping Terms:
| Minimum Order Quantity: | 1-20ton |
|---|---|
| Price: | usd500-800 per ton |
| Packaging Details: | 25kg/bag |
| Delivery Time: | 5-12days after recieved deposit |
| Payment Terms: | L/C, T/T, Western Union |
| Supply Ability: | 5000ton/per month |
|
Detail Information |
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| Description: | Boric Acid | Other Name: | Hydrogen Borate |
|---|---|---|---|
| CAS NO: | 10043-35-3 | HS CODE: | 2810002000 |
| UN NO: | 1439 | Color: | White |
| High Light: | boric acid crystals,pure boric acid |
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Product Description
99.5% white powder boric acid use for glass and ceramic making
H3BO3CAS NO 10043-35-3
►Origin of Boric acid
Boric acid, also called hydrogen borate, boracic acid, orthoboric acid and
acidum boricum, is a weak, monobasic Lewis acid of boron, which is 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.
► Occurrence
Boric acid, or sassolite, is found mainly in its free state in some volcanic
districts, for example, in the Italian region of Tuscany, the Lipari Islands and
the US state of Nevada. In these volcanic settings it issues, mixed with steam,
from fissures in the ground. It is also found as a constituent of many
naturally occurring minerals – borax, boracite, ulexite (boronatrocalcite) and
colemanite. Boric acid and its salts are found in seawater. It is also found in
plants, including almost all fruits.
Boric 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 borates, including boric
acid, have been used since the time of the ancient Greeks for cleaning,
preserving food, and other activities.
►Product description
Poruct name |
Boric acid |
| Molecular formula | H3BO3 |
| Molecular wight | 61.83 |
| Properties | Colorless crystal or white powder |
| Purity | 99.5% |
| UN number | 1439 |
►Specification
Item |
Specification |
| H3BO3 | ≥ 99.50% |
| NH3 | ≤0.60% |
| SO4 | ≤0.30% |
| CL | ≤0.15% |
| Fe | ≤0.06% |
| Water insoluble | ≤0.06% |
►Preparation
Boric acid may be prepared by reacting borax (sodium tetraborate
decahydrate) with a mineral acid, such as hydrochloric acid:
Na2B4O7·10H2O + 2 HCl → 4 B(OH)3 [or H3BO3] + 2 NaCl + 5 H2O
It is also formed as a by product of hydrolysis of boron trihalides and
diborane
B2H6 + 6 H2O → 2 B(OH)3 + 6 H2
BX3 + 3 H2O → B(OH)3 + 3 HX (X = Cl, Br, I)
►Application in Industry
1. Monofilament fiberglass
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.
2. Combination with denatured alcohol
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.
3. LCD flat panel displays
Boric acid is used in the production of the glass in LCD flat panel displays.
►Packing details
Packing :25/50KG plastic pp bag
1 ton /jumbo bag ,or customized.
►Packing details
MOQ :1-20TON
