Product Details
Place of Origin: CHINA
Brand Name: YIXIN
Certification: ISO9001
Model Number: YXB-005
Payment & Shipping Terms
Minimum Order Quantity: 1-20ton
Packaging Details: 25kg/bag
Delivery Time: 5-12days after recieved deposit
Payment Terms: L/C, T/T, Western Union
Supply Ability: 5000ton/per month
Description: |
Orthoboric Acid |
Other Name: |
Hydrogen Borate |
CAS NO: |
10043-35-3 |
HS CODE: |
2810002000 |
UN NO: |
1439 |
Color: |
White |
Description: |
Orthoboric Acid |
Other Name: |
Hydrogen Borate |
CAS NO: |
10043-35-3 |
HS CODE: |
2810002000 |
UN NO: |
1439 |
Color: |
White |
Poruct name |
Orthoboric acid |
| Molecular formula | H3BO3 |
| Molecular wight | 61.83 |
| Properties | Colorless crystal or white powder |
| Purity | 99.5% |
| UN number | 1439 |
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.
Item |
Specification |
| H3BO3 | ≥ 99.50% |
| NH3 | ≤0.60% |
| SO4 | ≤0.30% |
| CL | ≤0.15% |
| Fe | ≤0.06% |
| Water insoluble | ≤0.06% |
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)
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