1、Chemical Name: Boric Acid
2、Molecular Formula: H3BO3
3、Molecular Weight: 61.83
4、CAS: 10043-35-3
5、Character: White powdery crystal or scaly luster crystal on triclinic axis, with smooth hand feeling and no odor. Soluble in water, alcohol, glycerin, ethers and essential oils, the aqueous solution is weakly acidic.
6、Usage: Used in the manufacture of telecommunication equipment and high-grade glass. 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 ventilation 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.
| 质量指标 | Specification | GBT628-2011 | |
| 分析纯 | 化学纯 | ||
| 含量（H3BO3），w/% ≥ | Content(H3BO3)，w/% ≥ | 99.5 | 99.0 |
| 澄清度试验/号 ≤ | Clarity test/No ≤ | 2 | 4 |
| 乙醇溶解试验 | Ethanol solubility test | 合格 | 合格 |
| 水不溶物，w/% ≤ | Insoluble Substances,w/% ≤ | 0.005 | 0.02 |
| 甲醇不挥发物（以SO4计），w/% ≤ | Methanol is not volatile(As SO4),w/% ≤ | 0.05 | 0.3 |
| 氯化物（Cl），w/% ≤ | Chloride(Cl),w/% ≤ | 0.0005 | 0.002 |
| 硫酸盐（SO4），w/% ≤ | Sulphate(SO4),w/% ≤ | 0.002 | 0.01 |
| 磷酸盐（PO4），w/% ≤ | Phosphate(PO4),w/% ≤ | 0.0005 | 0.003 |
| 砷（As），w/% ≤ | Arsenic (As),w/% ≤ | 0.0001 | 0.0005 |
| 钙（Ca），w/% ≤ | Calcium (Ca),w/% ≤ | 0.002 | 0.01 |
| 铁（Fe），w/% ≤ | Iron(Fe),w/% ≤ | 0.0005 | 0.002 |
| 铅（Pb），w/% ≤ | Lead (Pb) ,w/% ≤ | 0.001 | 0.003 |
