Address: No. 6, Yinggang South Road, Yingkou Xishi District, Liaoning Province
Mobile: 18341735777, 18241795881
Tel: 0417-6659881, 0417-6659883
Sales QQ: 1042245435
Fax: 0417-6659882
Postcode: 115003
Website: en.lnpdkj.com
E-mail: pengdayk@163.com
Product description
Anhydrous borax
English name: Sodium Borate
Alias/chemical name: borax sodium tetraborate sodium borate
Molecular formula: Na2B4O7
Molecular weight: 201.22
Executive quality standard: GB/T537-1997
Product Features
The properties of anhydrous borax are white crystals or colorless glassy crystals, the melting point of α orthorhombic crystal is 742.5 ° C, and the density is 2.28; It has strong hygroscopicity, dissolves in water, glycerin, and slowly dissolves in methanol to form a solution with a concentration of 13-16%. Its aqueous solution is weakly alkaline and insoluble in alcohol. Anhydrous borax is an anhydrous product obtained when borax is heated to 350-400°C. When placed in the air, it can absorb moisture into borax decahydrate or borax pentahydrate.
Technical indicators
产品名称：无水硼砂 Product Name: anhydrous borax | 外观：白色粉末。 Appearance: white granular powder |
检 验 项 目 Inspection items | 检验指标 Inspection index |
无水硼砂 （%） Anhydrous borax | ≥95 |
氧化钠 （%） Sodium oxide | ≥31 |
三氧化二硼 （%） Boron trioxide | ≥68 |
碳酸钠（Na2CO3计）含量 （%） Content of sodium carbonate (Na2CO3) | ≤0.4 |
水不溶物含量（%） Water insoluble content | ≤0.06 |
硫酸盐（SO4计） 含量 （%） Sulfate (SO4) content | ≤0.4 |
氯化物（CL计） 含量 （%） Chloride (CL meter) content | ≤0.03 |
水份 （%） Moisture | ≤0.5 |
铁含量（Fe） （%） Iron content（Fe） | ≤0.005 |
平均粒度 目 Average grain size | 40-60 |
Scope of application
1. As the carrier of lubricant in metal wire drawing, as stabilizer and skeleton in refractory materials.
2. It is used as a cosolvent for high-quality glass, glaze, welding flux, non-ferrous metals and alloys, etc.
3. It is used as retarder for cement and concrete, PH value buffer in water system, and emulsifier for paraffin.
4. Borax is the basic raw material for the preparation of boron-containing compounds. Almost all boron-containing compounds can be obtained through borax.
5. Other properties are similar to borax.
Packing standard
25kg/bag in woven bag, 600kg/pallet woven with plastic inside and outside, covered with film, 20-foot container with pallet can hold 12 tons in port, 20-foot container without pallet, 17 tons of anhydrous borax is exported all the year round, product quality is stable, High output, can meet domestic and foreign customers.
