1、Chemical Name:Boric Acid
2、Molecular Formula:H₃BO₃
3、Molecular Weight: 61.834
4、CAS: 10043-35-3
5、Character: It is white powdery crystal or scaly luster crystal on triclinic axis with smooth hand feeling. Odorless. It is soluble in water, alcohol, glycerin, ethers and essential oils, the aqueous solution is weakly acidic.
6、Usage: It can be used in the manufacture of telecommunication equipment and high-grade glass. It can also be used as metal protective agent, fire retardant, detergent and analytical reagent. It is also used in the synthesis of boride intermediates.
7、Packing: It is packed with a polyethylene bag as the inner layer, and a compound plastic woven bag as the outer layer. The net weight of each bag is 25kg.
8、Storage and Transport: It should be stored in a dry and ventilative warehouse, kept away from heat and moisture during transportation, unloaded with care so as to avoid damage. Furthermore, it must be stored separately from poisonous substances.
| Specification | GB/T 538-2018 工业优级 | GB/T 628-2011 分析纯 | GB/T 628-2011 化学纯 |
| Content (H₃BO₃),w/%≥ | 99.6-100.8 | 99.5 | 99.0 |
| Clarity test / No≤ | — | 2.0 | 4.0 |
| Ethanol solubility test | — | 合格 | 合格 |
| Insoluble substances,w/%≤ | 0.01 | 0.005 | 0.02 |
| Methanol Non-Volatile matt (as SO₄),w/%≤ | — | 0.05 | 0.3 |
| Chloride (Cl),w/%≤ | 0.01 | 0.0005 | 0.002 |
| Sulphate (SO₄),w/%≤ | 0.1 | 0.002 | 0.01 |
| Phosphate (PO₄),w/%≤ | — | 0.0005 | 0.003 |
| Arsenic (As),w/%≤ | — | 0.0001 | 0.0005 |
| Calcium (Ca),w/%≤ | — | 0.002 | 0.01 |
| Iron (Fe),w/%≤ | 0.001 | 0.0005 | 0.002 |
| Lead (Pb),w/%≤ | — | 0.001 | 0.003 |
| Heavy metal (as Pb),mg/kg≤ | 0.001 | — | — |
