Na2B4O7
|
≥ 99-100.3%
|
B2O
|
≥ 68-69.4%
|
NaO2
|
≥ 30.5-30.9%
|
NaCl
|
≤ 0.03%
|
FE
|
≤ 0.002%
|
الماء غير قابل للذوبان
|
≤ 0.04%
|