Shanghai Yixin Chemical Co., Ltd.

 

Only quality posesses market, improvement gets progress

 

 

Home
Products
About Us
Factory Tour
Quality Control
Contact Us
Request A Quote
Home ProductsBorax Decahydrate Powder

Corrosion Inhibition Industry Borax Decahydrate Powder 381.37 Molecular Weight

Corrosion Inhibition Industry Borax Decahydrate Powder 381.37 Molecular Weight

Corrosion Inhibition Industry Borax Decahydrate Powder 381.37 Molecular Weight

Product Details:

Place of Origin: CHINA
Brand Name: YIXIN
Certification: ISO9001
Model Number: YXB-001

Payment & Shipping Terms:

Minimum Order Quantity: Negotiable
Price: USD580-800/TON
Packaging Details: 50kg/pp bag 20FCL:25MT
Delivery Time: 3-12 working days
Payment Terms: T/T, Western Union, L/C, D/P
Supply Ability: 3000 ton per month
Contact Now
Detailed Product Description
Other Name: Sodium Borate CAS NO: 1303-96-4
Molecular Weight: 381.37 HS CODE: 2840190000
Density: 1.69-1.72 G/m3 Properities: Powder

Uses of 95% sodium tetraborate powder is metallurgical fluxes

corrosion inhibition and adhesives

 

 ►Product description

     

Borax, also known as sodium borate, sodium tetraborate, or disodium tetraborate,

 

is an important boron compound, a mineral, and a salt of boric acid. Powdered

 

borax is white, consisting of soft colorless crystals that dissolve easily in water. A

 

number of closely related minerals or chemical compounds that differ in their crystal

 

water content are referred to as borax, but the word is usually used to refer to the

 

decahydrate. Commercially sold borax is partially dehydrated.

 

Borax is a component of many detergents, cosmetics, and enamel glazes. It is

 

used to make buffer solutions in biochemistry, as a fire retardant, as an anti-fungal

 

compound, in the manufacture of fiberglass, as a flux in metallurgy, neutron-

 

capture shields for radioactive sources, a texturing agent in cooking, as a precursor

 

for other boron compounds, and along with its inverse, boric acid, is useful as an

 

insecticide.

 

In artisanal gold mining, the borax method is sometimes used as a substitute for

 

toxic mercury in the gold extraction process. Borax was reportedly used by gold

 

miners in parts of the Philippines in the 1900s.

 

Borax was first discovered in dry lake beds in Tibet and was imported via the Silk

 

Road to the Arabian Peninsula in the 8th Century AD.Borax first came into common

 

use in the late 19th century when Francis Marion Smith's Pacific Coast Borax

 

Company began to market and popularize a large variety of applications .

 

 

     

► Chemistry

 

The structure of the anion [B4O5(OH)4]2− in borax

 

The term borax is often used for a number of closely related minerals or chemical

 

compounds that differ in their crystal water content:

 

· anhydrous sodium tetraborate, Na2B4O7

 

· sodium tetraborate pentahydrate, Na2B4O7·5H2O

 

· setraborate decahydrate, Na2B4O7·10H2O

 

Borax is generally described as Na2B4O7·10H2O. However, it is better formulated

 

as Na2[B4O5(OH)4]·8H2O, since borax contains the [B4O5(OH)4]2− ion. In this

 

structure, there are two four-coordinate boron atoms (two BO4 tetrahedra) and two

 

three-coordinate boron atoms (two BO3 triangles).

 

Borax is also easily converted to boric acid and other borates, which have many

 

applications. Its reaction with hydrochloric acid to form boric acid is:

 

Na2B4O7·10H2O + 2 HCl → 4 H3BO3 + 2 NaCl + 5 H2O

 

The "decahydrate" is sufficiently stable to find use as a primary standard for acid

 

base titrimetry.

 

When borax is added to a flame, it produces a yellow green color.Borax is not used

 

for this purpose in fireworks due to the overwhelming yellow color of sodium. Boric

 

acid is used to color methanol flames a transparent green.

 

 

 

►Details  of borax 

 

 

Borax Decahydrate is the refined form of natural sodium borate. Composed of boric

 

oxide (B2O3), sodium oxide, and water, it is a mild, alkaline salt, white and

 

crystalline, with excellent buffering and fluxing properties. Available in powder or

 

granular form, Borax Decahydrate is an important multifunctional source of B2O3,

 

particularly for processes in which the simultaneous presence of sodium is

 

beneficial.

   

Product name

sodium tetraborate

Molecular formula   Na2B4O7.10H2O
Molecular wight  381.37
Properties  White power or crystal granular 
Purity   95% min 
UN number   1458


 

 

   

 ►Specification

 

 

             Item 

 Specification for borax decahydrate  powder 95%

            Na2B4O7.10H2O  95.00%
 B2O3    ≥36.47%
Na2O     ≥16.47%
Na2CO3 ≤0.2%
NaCL ≤0.5%
Fe     ≤0.005%
Water insoluble    ≤0.04%

 

 

►Features 

 

 

1. Borax Decahydrate is chemically stable under normal storage conditions. It will

 

slowly lose water of crystallisation if exposed to a warm, dry atmosphere.

 

Conversely, exposure to a humid atmosphere can cause recrystallisation at particle

 

contact points, resulting in caking. When storing the product, care should therefore

 

be taken to avoid wide fluctuations in temperature and humidity, and to ensure that

 

the packaging is not damaged.

 

2. Dissolved in water, Borax Decahydrate hydrolyzes to give a mildly alkaline

 

solution. It is thus capable of neutralizing acids. It also combines with strong alkalis

 

to form compounds of lower pH. The relatively constant pH of Borax Decahydrate

 

solutions makes it an excellent buffering agent.

 

 ►Application

 

1. Metallurgical fluxes


The ability of Borax Decahydrate to dissolve metal oxides is exploited in the

 

recovery of metals such as brass, copper, lead and zinc from scrap or smelting

 

slag.

 

In ferrous metallurgy, Borax Decahydrate is used as a cover flux to prevent

 

oxidation at the surface of the molten ingot. In welding, brazing, and soldering,

 

Borax Decahydrate covers the metal surfaces, excluding air and preventing

 

oxidation. It also acts as a solvent and cleaning agent.

 

 

2. Corrosion inhibition


 

Borax Decahydrate is incorporated in many aqueous systems requiring corrosion

 

inhibition. It protects ferrous metals against oxidation and finds use in the

 

manufacture of automotive and engine coolant formulations, and various water

 

treatment chemicals.The high solubility of Borax Decahydrate in ethylene glycol

 

makes it especially useful in car antifreeze formulations. Borax Decahydrate

 

neutralizes the acidic residue resulting from the decomposition of ethylene glycol

 

and minimizes the rate of oxidation at the surface of the metal. Aqueous solutions

 

of Borax Decahydrate have replaced chromates in railroad and other diesel engine

 

coolants.

 

 

 

3. Adhesives

 


Borax Decahydrate is part of the starch adhesive formulation for corrugated paper

 

and paperboard, and is a peptizing agent in the manufacture of casein-based and

 

dextrin-based adhesives. It greatly improves the tack and green strength of the

 

adhesive by crosslinking conjugated hydroxyl groups.

 

Corrosion Inhibition Industry Borax Decahydrate Powder 381.37 Molecular Weight

 

Contact Details
Shanghai Yixin Chemical Co., Ltd.

Contact Person: anny

Send your inquiry directly to us (0 / 3000)