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Borax Anhydrous Assay 99.5% CAS 1330-43-4

Name: Borax Anhydrous Assay 99.5% CAS 1330-43-4
Brand: Borax Anhydrous Assay 99.5% CAS 1330-43-4
SKU: pr2610161014
Price: 990 USD
Availability: InStock

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Unit Price:

$990-1000/MT FOB

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CAS No.:

1330-43-4

Grade:

Industrial Grade

Content:

99%

Port:

qingdao

Brand:

Borax Anhydrous Assay 99.5% CAS 1330-43-4

Packaging:

25kg/bag

Price valid (until):

2026-11-16

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Ou Sheng International Trading Limited

Company Type:

Trader

Location:

Hongkong, China

Payment Terms:

100% TT in advance

Average Lead Time:

15 days

Qualification:

Main Products:

nitric acid,sles,xylene,aniline

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Description

Borax Anhydrous Assay 99.5% CAS 1330-43-4

Borax, generally written as Na2B4O7?10H2O, is a very important boron-containing mineral and boron compound. Usually a white powder containing colorless crystals, odorless and salty. The specific gravity is 1.73. All crystal water is lost at 350-400°C. Soluble in water and glycerol, slightly soluble in alcohol. The aqueous solution is strongly alkaline.
Technical Data:

	Purity	B2O3	Boron
Borax Decahydrate	99.5%	36.5%	11%
Borax Pentahydrate	99.5%	48%	15%
Borax Anhydrous	99%	68%	21%

melting point	75 °C	boiling point	320°C
density	1.73 g/mL at 25 °C(lit.)	storage	2-8°C
Odor	Odorless	color	White, gray, bluish or greenish white streaked

Application field

Shop Borax Anhydrous Assay 99.5% CAS 1330-43-4-Detailed Image 1

Used as the basic raw material of boron compounds, but also used in glass, enamel, non-ferrous metal welding, fertilizer, atomic energy industry and electronic tubes

Borax in addition to heat, water and acid resistance and other characteristics, there is a strong ability to dissolve. When borax is heated, it turns white and expands into transparent glass spheres, in which the metal oxide dissolves, restoring the metal's original color. This is known as the borax pellet reaction. Borax can be used for capacitor manufacturing, for all kinds of glass products, for the ceramic industry as glaze. It is used as antifreeze and anticoagulative agent in mining and metallurgical industry, as electrolyte additive and welding agent in non-ferrous metal industry. Also used as a preservative and herbicide and soil fungicide and boride manufacturing.

Specification

Borax decahydrate COA

Borax decahydrate
Test Item	Standard	Results
Appearance	White crystalline powder	Conform
Sodium Borate	≥95%	95.3
B2O3	≥36%	37. 1
Na2O	≥ 15%	16.47
Na2CO3	≤0.2%	0.2
NaCl	≤0.5%	0.5
Fe	≤0.005%	0.005
Water Insolube	≤0.04%	0.03
Bulk Density	≥ 1	1.65

Packaging & Shipping

Packaging Details:
25kg/bag or according to your request

Delivery Time:
around 13 working days after receiving the deposit.
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Company Profile

Items	Specifications

ECHEMI Editorial Reference

DryPowder; DryPowder, PelletsLargeCrystals; Liquid; OtherSolid|Powder or glass-like plates becoming opaque on exposure to air; slowly soluble in water|COLOURLESS-TO-WHITE HYGROSCOPIC CRYSTALS OR POWDER. TURNS OPAQUE ON EXPOSURE TO AIR.|White to gray, odorless powder.|White to gray, odorless powder. [herbicide] [Note: Becomes opaque on exposure to air.]

Certificates

Basic Info

Product Name:

Sodium tetraborate

Other Name:

Boron sodium oxide (B4Na2O7);Sodium tetraborate (Na2B4O7);Boric acid (H2B4O7),disodium salt;Anhydrous borax;Borax glass;Fused Borax;Sodium biborate;Disodium tetraborate;Sodium borate;FR 28;Rasorite 65;Sodium tetraborate;Sodium boron oxide (Na2B4O7);Spraybor;Fireless B Liquid;Fireless B;Granubor;FR 28 (borate);Ecoboron PRO;Dehybor;DC Dehybor;Etibor 68;1332-28-1;12045-54-4;12589-17-2;13764-83-5;19223-62-2;37199-25-0;115372-65-1;136349-33-2;163701-93-7;886584-11-8;910783-70-9;950582-57-7;1039387-27-3;1186126-93-1;1189141-72-7;1242163-02-5;1247014-60-3;1262222-67-2;1262281-53-7;1268472-42-9;1314012-56-0;1315317-92-0;2123562-10-5;2407294-88-4;2648563-35-1

CAS No.:

1330-43-4

Molecular Formula:

B4Na2O7

InChIKeys:

UQGFMSUEHSUPRD-UHFFFAOYSA-N

Molecular Weight:

201.22

Exact Mass:

201.981171

EC Number:

215-540-4

UNII:

8191EN8ZMD

ICSC Number:

1229

DSSTox ID:

DTXSID2034388

Color/Form:

Colorless glassy solid; hygroscopic|Light grey, vitreous granules|White to gray powder; becomes opaque on exposure to air

HScode:

28401100

Categories:

Boron Compounds

Characteristics

PSA:

92.27000

XLogP3:

-2.10280

Appearance:

White Solid

Density:

2.367 g/cm³

Melting Point:

741 °C

Boiling Point:

1575°C

Flash Point:

1575°C

Refractive Index:

1.501

Water Solubility:

H2O: 26 g/L (20 ºC)

Storage Conditions:

Store at +5°C to +30°C.

Vapor Pressure:

Negligible at 20 °C

Odor:

Odorless

PH:

pH = 9.3 at 20 °C (3% solution)

Experimental Properties:

Heat of formation (glass): -32566 MJ/mol; heat of formation (alpha crystalline form): -3.2767 MJ/mol; heat of solution: -213.8 kJ/kg; heat of fusion: 81.2 kJ/mol|Molar heat capacity: 186.8 J/K mol at 25 °C|White, free-flowing crystals, hygroscopic; forms partial hydrate in damp air; mp: 741 °C; density: 2.367; slightly soluble in cold water /Anhydrous sodium tetraborate/|Hygroscopic

Flammable Limits:

Noncombustible Solid

Corrosivity:

Solutions are not a corrosion hazard to ferrous metals

See More Sodium tetraborate Properties 

Hazard Identification

Classification of the substance or mixture

Reproductive toxicity, Category 1B

GHS label elements, including precautionary statements

Precautionary statement(s)
Pictogram(s)
Signal word	Danger
Hazard statement(s)	none
Prevention	P203 Obtain, read and follow all safety instructions before use. P280 Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/...
Response	P318 IF exposed or concerned, get medical advice.
Storage	P405 Store locked up.
Disposal	P501 Dispose of contents/container to an appropriate treatment and disposal facility in accordance with applicable laws and regulations, and product characteristics at time of disposal.

Other hazards which do not result in classification

no data available

Handling and Storage

Precautions for safe handling

Handling in a well ventilated place. Wear suitable protective clothing. Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use non-sparking tools. Prevent fire caused by electrostatic discharge steam.

Conditions for safe storage, including any incompatibilities

Dry. Well closed.

See More Sodium tetraborate Safety Data Sheet 

Seller Information

Business Type:
Trader

Main Products:
nitric acid,sles,xylene,aniline

Location:
UNIT 903, 9/F., CAMERON COMM CENTRE, 458-468 HENNESSY ROAD, CAUSEWAY BAY HONG KONG

Payment Terms:
100% TT in advance

Average lead Time:
15 days

Total Annual Revenue:
$5 million-$10 million

Total Employees:
51-100

Year of Establishment:
2026

We are a professional exporter of industrial chemical solvents and mining‑use chemicals.

We supply a wide range of industrial solvents for coating, printing, cleaning and manufacturing industries. Our mining‑chemical products include flotation collectors, frothers, flocculants and other reagents for mineral processing and mine wastewater treatment.

With rich experience in chemical export, we provide stable‑quality goods, customized packaging and complete export solutions. We sincerely welcome global customers for inquiries and long‑term cooperation.

Inquiry History

5 Inquiries

Country	Product	Purchase Quantity	Date Posted
Morocco	Boron sodium oxide	1 MT	Jul 25, 2024
Russia	sodium tetraborate	4 MT	Apr 9, 2025
Morocco	Boron sodium oxide	250 KG	Oct 21, 2024
Vietnam	Borax	50.00 KG	Feb 27, 2024
Russia	sodium tetraborate	1 20' Fcl	Mar 22, 2024

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Borax Anhydrous Assay 99.5% CAS 1330-43-4

Product Description

Seller Information

Inquiry History

Borax Anhydrous Assay 99.5% CAS 1330-43-4

Classification of the substance or mixture

GHS label elements, including precautionary statements

Other hazards which do not result in classification

Precautions for safe handling

Conditions for safe storage, including any incompatibilities

More Choices Find All Products for Sale 

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