Chemical name: Boric acid
Molecular formula: H3BO3
Molecular weight:61.834
Cas:10043-35-3
Einecs:233-139-2
H.S CODE:28100020
Character: It is white powdery crystal or scaly luster crstal 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.
Usage: It can be used in the manufacture of telecommunication equipment and the high grade glass. It can also be used as metal protective agent, fire retardant, detergent and alalytical reagent. It is also used in the synthesis of boride intermediates.
Packing: It is packed with a plyethylene bag as the innerlayer. And a compound plastic woven bag as the outer layer. The net weight of each bag is 25kgs.
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.
| Specification | GBT628-2011 | |
| AR | CR | |
| Content(H3BO3)，w/% ≥ | 99.5 | 99.0 |
| Clarity test/No ≤ | 2 | 4 |
| Ethanol solubility test | Qualify | Qualify |
| Insoluble Substances,w/% ≤ | 0.005 | 0.02 |
| Methanol is not volatile(As SO4),w/% ≤ | 0.05 | 0.3 |
| Chloride(Cl),w/% ≤ | 0.0005 | 0.002 |
| Sulphate(SO4),w/% ≤ | 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/% ≤ | 0.0005 | 0.002 |
| Lead (Pb) ,w/% ≤ | 0.001 | 0.003 |
