Главная
Все Категории
Borate
Борная цена борный децидрат натрия

Борная цена борный децидрат натрия

Категория: Borate >>>
Поставщик: Inner,Mongolia,Ludingyuan,Import,And,Export,Co.,Ltd.

Цена:*

Количество:

Описание и отзывы

Трекер стоимости

Месяц	Минимальная цена	Макс. стоимость
Sep-19-2025	0.94 $*	0.78 $*
Aug-19-2025	0.2 $*	0.14 $*
Jul-19-2025	0.15 $*	0.52 $*
Jun-19-2025	0.78 $*	0.93 $*
May-19-2025	0.28 $*	0.81 $*
Apr-19-2025	0.43 $*	0.32 $*
Mar-19-2025	0.78 $*	0.78 $*
Feb-19-2025	0.52 $*	0.65 $*
Jan-19-2025	0.79 $*	0.98 $*

Характеристики

Borax borax powder borax

Product Description

The Borax penta is a complex borate mineral that is found in playa lakes and other evaporite deposits. The basic structure of borax contains chains of interlocking BO2(OH) triangles and BO3(OH) tetrahedrons bonded to chains of sodium and water octahedrons. Most old mineral specimens of borax are chalky white due to a chemical reaction from dehydration. They have actually altered (at least on their surface) to the mineral tincalconite, Na2 B4O7-5H2O, with the loss of water. This kind of alteration from one mineral to another leaves the original shape of the crystal. Minerologists refer to this as a pseudomorph, or "fake shape", because the tincalconite has the crystal shape of the predecessing borax.

Borax is directly deposited in arid regions from the evaporation of water in intermittent lakes called playas. The playas form only during rainy seasons due to runoff from adjacent mountains. The runoff is rich in the element boron and is highly concentrated by evaporation in the arid climate. Eventually the concentration is so great that crystals of borax and other boron minerals form.

Specification of Borax

ITEM	Specification
ITEM	Decahydrate	Pentahydrate	Anhydrous
Appearance	White Powder
Molecular Weight	381.38	291.35	201.22
Sodium Borate Assay, %≥	99.5 (Na2B4O7.10H2O)	99.5 (Na2B4O7.5H2O)	99.5 (Na2B4O7.H2O)
B2O3, %≥	37-38	48.5	68.0
NaO2, %≥	16-17	21.5	30
Sodium carponate (Na2CO3) % ≤	0.1	0.1	0.1
Insoluble matter in water % ≤	0.04	0.04	0.04
Sodium Suitate (Na2SO4) % ≤	0.2	0.2	0.2
Sodium Chloride (NaCl) % ≤	0.03	0.03	0.03
Iron (Fe) % ≤	0.002	0.002	0.002

Application of Borax

1)metal wire drawing in the lubricant can be used as a carrier, as a stabilizing agent in refractory and skeleton formed body.
2)Used for high-quality glass, coat, non-ferrous metal and alloys such as cosolvent .
3)retarder for cement and concrete, water, pH value of system buffer, paraffin wax emulsifier.
4)preparation of boron-containing compounds, borax is the basic raw materials, almost all of the boron compounds are boric acid to the system can be obtained by.
5)other similar nature and borax.